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  • GAE - Getting TypeError requiring class instance be passed to class's own method...

    - by Spencer Leland
    I'm really new to programming... I set up a class to give supporting information for Google's User API user object. I store this info in the datastore using db.model. When I call the okstatus method of my user_info class using this code: elif user_info.okstatus(user): self.response.out.write("user allowed") I get this error: unbound method okstatus() must be called with user_info instance as first argument (got User instance instead) Here is my user_info class. class user_info: def auth_ctrlr(self, user): if self.status(user) == status_allowed: return ("<a href=\"%s\">Sign Out</a>)" % (users.create_login_url("/"))) else: return ("<a href=\"%s\">Sign In or Get an Account</a>)" % (users.create_logout_url("/"))) def status(self, user): match = sub_user.gql(qu_by_user_id, user.user_id) return match.string_status def group(self, user): match = sub_user.gql(qu_by_user_id, user.user_id) grp = group_names.gql(qu_by_user_id, match.groupID) return grp def okstatus(self, user): match = self.status(user) if match == status_allowed: return True My understanding is that the argument "self" inside the method's calling arguments describes it as a child to the class. I've tried everything I can think of and can't find any related info online. Can someone please tell me what I'm doing wrong? Thanks

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  • HTML & CSS Horizontal menu with items on left & right

    - by Fabian Vilers
    Hi all, I'm building an horizontal menu in html+css. The current result is fine, except I want to have some items on the left, and others on the right. I couldn't find usefull result on Google with such common keywords so I'm asking on SO. Here's my code so far: #menu { background-color: #383838; height: 65px; margin-bottom: 20px; } #menu ul li { float: left; } <div id="menu"> <ul> <li>Link 1</li> <li>Link 2</li> <li>Link 3</li> </ul> </div> I'd like to have Link 3 on the right, so the space between link 2 and 3 should be filled at maximum. I don't want a filler <li> tag, but instead apply a class to the last <li> on the left, or the first <li> on the right. Don't want to adjust the width as I've a :hover background color changing effet on the links. I suppose margin or padding should do the trick but I can't manage to find how. Any clue? Thanks in advance, Fabian

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  • Converting a bash script to python (small script)

    - by Mestika
    Hi, I’ve a bash script I’ve been using for a Linux environment but now I have to use it on a Windows platform and want to convert the bash script to a python script which I can run. The bash script is rather simple (I think) and I’ve tried to convert it by google by way around but can’t convert it successfully. The bash script looks like this: runs=5 queries=50 outfile=outputfile.txt date >> $outfile echo -e "\n---------------------------------" echo -e "\n----------- Normal --------------" echo -e "\n---------------------------------" echo -e "\n----------- Normal --------------" >> $outfile for ((r = 1; r < ($runs + 1); r++)) do echo -e "Run $r of $runs\n" db2 FLUSH PACKAGE CACHE DYNAMIC python reads.py -r1 -pquery1.sql -q$queries -shotelspec -k6 -a5 >> $outfile done The main command, the python read.py … etc. is another python file I’ve been given and have the arguments as you see. I know it is a lot to ask for, but it would really help me out if someone could convert this to a python script I can use or at least give me some hints and directions. Sincerely Mestika

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  • how to specify open id realm in openid4java 0.9.5

    - by Salvin Francis
    my url @ development : http://192.168.0.1:8888/com.company.MyEntryPoint/MyEntrypoint.html my url @ live env : http://www.example.com/com.company.MyEntryPoint/MyEntrypoint.html I need users to authenticate using open id, this is how i want my realm to be: *.company.MyEntryPoint I wrote a simple code to specify realm: AuthRequest authReq = manager.authenticate( discovered, returnToUrl, "*.company.MyEntryPoint" ); it does not work. Exception: org.openid4java.message.MessageException: 0x301: Realm verification failed (2) for: *.company.MyEntryPoint at org.openid4java.message.AuthRequest.validate(AuthRequest.java:354) at org.openid4java.message.AuthRequest.createAuthRequest(AuthRequest.java:101) at org.openid4java.consumer.ConsumerManager.authenticate(ConsumerManager.java:1073) Of all the combinations I tried, curiously, the following worked: AuthRequest authReq = manager.authenticate( discovered, returnToUrl, "http://localhost:8888/com.capgent.MyEntryPoint" ); This does not solves my issue but rather complicates it :) According to google and open id spec it should have worked complete code snippet: List discoveries = manager.discover(clientUrl); DiscoveryInformation discovered = manager.associate(discoveries); AuthRequest authReq = manager.authenticate(discovered, returnToUrl,"*.company.MyEntryPoint"); FetchRequest fetch = FetchRequest.createFetchRequest(); fetch.addAttribute("email", "http://schema.openid.net/contact/email", true); fetch.addAttribute("country", "http://axschema.org/contact/country/home", true); fetch.addAttribute("firstname", "http://axschema.org/namePerson/first", true); fetch.addAttribute("lastname", "http://axschema.org/namePerson/last", true); fetch.addAttribute("language", "http://axschema.org/pref/language", true); authReq.addExtension(fetch); String returnStr; if (!discovered.isVersion2()) { returnStr = authReq.getDestinationUrl(true); } else { returnStr = authReq.getDestinationUrl(false); } What am I doing wrong over here ?

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  • DDMS plugin not loading GPX files

    - by Craig
    I am unable to load a GPX file in the DDMS eclipse plugin. When specifying a GPX file, no points are added to the emulator control list. I have tried adding KML files as well, generated in Google earth. Is there a way to get these files to work? The content of the file is listed below: <?xml version="1.0" encoding="UTF-8"?> <gpx version="1.0" creator="RunKeeper - http://www.runkeeper.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.topografix.com/GPX/1/0" xsi:schemaLocation="http://www.topografix.com/GPX/1/0 http://www.topografix.com/GPX/1/0/gpx.xsd"> <trk> <name>Running 11/30/09 3:37 pm11/30/09 3:37 pm</name> <time>2009-11-30T15:37:08Z</time> <trkseg> <trkpt lat="41.811406000" lon="-72.521427000"> <ele>37.000000</ele> <time>2009-11-30T15:37:08Z</time> </trkpt> <trkpt lat="41.811030000" lon="-72.522882000"> <ele>38.000000</ele> <time>2009-11-30T15:37:10Z</time> </trkpt>

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  • C# Accessing controls from an outside class without "public"

    - by Kurt W
    I know this has been asked before but I believe my situation is a bit different -- or I don't understand the answers given. I have spent about 4 hours working on this solidly and finally realized, I just don't know what to do. I have 2 Forms (Form1, Settings) and a class I created called Themes. I have get/set properties that currently work but are all within Form1 and I would like to move as much code related to themeing as I can OUTSIDE of Form1 and into Themes.cs. Changing Theme: To change the theme, the user opens up the Settings form and selects a theme from the dropdown menu and presses the 'Set' button -- this all works, but now I want to move it into my own class and I can't get the code to compile. Here is example code that works before moving -- note that this is only 2 different controls I want to modify but there are about 30 total. I am abridging the code: Form 1: public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void btnSettings_Click(object sender, EventArgs e) { Settings frm = new Settings(this); frm.Show(); } private Color txtRSSURLBGProperty; private Color txtRSSURLFGProperty; public Color TxtRSSURLBGProperty { get { return txtRSSURLBGProperty; } set { txtRSSURL.BackColor = value; } } public Color TxtRSSURLFGProperty { get { return txtRSSURLFGProperty; } set { txtRSSURL.ForeColor = value; } } Settings Form: public partial class Settings : Form { public Settings() { InitializeComponent(); } private Form1 rssReaderMain = null; public Settings(Form requestingForm) { rssReaderMain = requestingForm as Form1; InitializeComponent(); } private void button2_Click(object sender, EventArgs args) { // Appearence settings for DEFAULT THEME if (cbThemeSelect.SelectedIndex == 1) { this.rssReaderMain.TxtRSSURLBGProperty = Color.DarkSeaGreen; this.rssReaderMain.TxtRSSURLFGProperty = Color.White; [......about 25 more of these....] } The theme class is currently empty. Again, the goal is to move as much code into the themes class (specifically the get/set statements if at all possible!) and hopefully just use a method similar to this within the Settings form once the proper drowndown item is selected: SetTheme(Default); I hope someone can help, and I hope I explained it right! I have been racking my brain and I need to have this done fairly soon! Much thanks in advance as I'm sure everyone says. I have teamviewer or logmein if someone wants to remote in -- that is just as easy. I can also send my project as a zip if needed. Thanks so much, Kurt Modified code for review: Form1 form: public partial class Form1 : ThemeableForm { public Form1() { InitializeComponent(); } ThemeableForm form: internal abstract class ThemeableForm : Form { private Color rssLabelBGProperty; private Color rssLabelFGProperty; public Color RssLabelBGProperty { get { return rssLabelBGProperty; } set { lRSS.BackColor = value; } } public Color RssLabelFGProperty { get { return rssLabelFGProperty; } set { lRSS.ForeColor = value; } } Settings form: public Settings(ThemeableForm requestingForm) { rssReaderMain = requestingForm as ThemeableForm; InitializeComponent(); } private ThemeableForm rssReaderMain = null; private void button2_Click(object sender, EventArgs args) { // Appearence settings for DEFAULT THEME if (cbThemeSelect.SelectedIndex == 1) { this.rssReaderMain.LRSSBGProperty = Color.DarkSeaGreen; this.rssReaderMain.LRSSFGProperty = Color.White; } Now the all the controls in my get/set (lRSS in the example code above) error out with does not exist in the current context. I also get the warning: Warning 1The designer could not be shown for this file because none of the classes within it can be designed. The designer inspected the following classes in the file: Form1 --- The base class 'RSSReader_BKRF.ThemeableForm' could not be loaded. Ensure the assembly has been referenced and that all projects have been built. 0 0

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  • What is the fastest, most efficient way to get up to speed on a new technology?

    - by SLC
    My current job involves working with a huge number of technologies, most of which are very niche and unheard of. In some cases I have to write something about the technology, or with the technology, such as some lessons, examples, or tutorials, on behalf of the developer of that technology or someone that is backing it. When I get told to learn about a new technology, my first port of call is to check our internal library, and then look on amazon for a book on the subject. Failing that, or if the project is too small to warrant a purchase, I hit up google and youtube. However the results of randomly googling what I want to learn are hit and miss. Some days, I can find everything I want to know in a series of lessons or videos, and it's no problem. Other times, I can find almost nothing, and I really have to piece together things from sites. The result is that there are various resources out there, videos, interactive lessons, tutorials, books etc. but when I need to learn something fast, I often don't know the best way to go about it. It's not about fun, because I don't always have the luxury of working my way through a 600 page textbook named "A Complete Guide To Technology X", I have to deliver results quickly. One of the examples I'd like to use is ASP.NET MVC 2 which is something I have been told to learn. I grabbed a book on MVC 1 to refresh my knowledge, but googling it does't produce much useful information. I've seen a ton of ScottGu's tutorials on it, but they are mostly feature presentations, and some date back almost a year. The same applies to channel 9 and there are no books out yet on amazon. My question therefore has two parts, the first asks, "Where are the best places to look to get the information needed to learn a new technology?" and the second asks "What is the most efficient way to use such resources to learn a new technology?"

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  • Bash script to log in over SSH

    - by user1042928
    Sorry if this seems like a dumb question but I am just learning bash scripting. For a school project we need to code an RTX that runs in Unix. It runs as a process in terminal and takes in user input and then prints it to the screen. I want to write a bash script to test that it can respond to lots of quick user input without overflowing or failing. My main problem is that once the RTX starts the bash script will stop on that line until the RTX terminates and only then print the loop to the terminal (instead of printing it to the RTX prompt as I intend it to). I have tried running the RTX in the background but that didn't work. I need to find a way to redirect input to the RTX while it is still running with a bash script. Google searches didn't come up with examples that I understood/could adapt. Any help is appreciated. #!/bin/bash # declare STRING variable STRING="RTX Worked =D" #Start the rtx in a new process, stuck on this line until rtx terminates. ./main #Somehow redirect io to the rtx. for i in `seq 1 100`; do echo $i echo " \n" done echo $STRING

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  • Q on Python serialization/deserialization

    - by neil
    What chances do I have to instantiate, keep and serialize/deserialize to/from binary data Python classes reflecting this pattern (adopted from RFC 2246 [TLS]): enum { apple, orange } VariantTag; struct { uint16 number; opaque string<0..10>; /* variable length */ } V1; struct { uint32 number; opaque string[10]; /* fixed length */ } V2; struct { select (VariantTag) { /* value of selector is implicit */ case apple: V1; /* VariantBody, tag = apple */ case orange: V2; /* VariantBody, tag = orange */ } variant_body; /* optional label on variant */ } VariantRecord; Basically I would have to define a (variant) class VariantRecord, which varies depending on the value of VariantTag. That's not that difficult. The challenge is to find a most generic way to build a class, which serializes/deserializes to and from a byte stream... Pickle, Google protocol buffer, marshal is all not an option. I made little success with having an explicit "def serialize" in my class, but I'm not very happy with it, because it's not generic enough. I hope I could express the problem. My current solution in case VariantTag = apple would look like this, but I don't like it too much import binascii import struct class VariantRecord(object): def __init__(self, number, opaque): self.number = number self.opaque = opaque def serialize(self): out = struct.pack('>HB%ds' % len(self.opaque), self.number, len(self.opaque), self.opaque) return out v = VariantRecord(10, 'Hello') print binascii.hexlify(v.serialize()) >> 000a0548656c6c6f Regards

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  • PHP - Database schema: version control, branching, migrations.

    - by Billiam
    I'm trying to come up with (or find) a reusable system for database schema versioning in php projects. There are a number of Rails-style migration projects available for php. http://code.google.com/p/mysql-php-migrations/ is a good example. It uses timestamps for migration files, which helps with conflicts between branches. General problem with this kind of system: When development branch A is checked out, and you want to check out branch B instead, B may have new migration files. This is fine, migrating to newer content is straight forward. If branch A has newer migration files, you would need to migrate downwards to the nearest shared patch. If branch A and B have significantly different code bases, you may have to migrate down even further. This may mean: Check out B, determine shared patch number, check out A, migrate downwards to this patch. This must be done from A since the actual applied patches are not available in B. Then, checkout branch B, and migrate to newest B patch. Reverse process again when going from B to A. Proposed system: When migrating upwards, instead of just storing the patch version, serialize the whole patch in database for later use, though I'd probably only need the down() method. When changing branches, compare patches that have been run to patches that are available in the destination branch. Determine nearest shared patch (or oldest difference, maybe) between db table of run patches and patches in destination branch by ID or hash. Could also look for new or missing patches that are buried under a number of shared patches between the two branches. Automatically merge down to the nearest shared patch, using the db table stored down() methods, and then merge up to the branche's latest patch. My question is: Is this system too crazy and/or fraught with consequences to bother developing? My experience with database schema versioning is limited to PHP autopatch, which is an up()-only system requiring filenames with sequential IDs.

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  • Browser security when calling HTTP assets via a SWF on a HTTPS site

    - by Mark Ursino
    We have a site that runs on HTTPS and needs to pull in various JS assets to run a video player on the page. We get a browser security warning on this page because the JS files we are externally calling are being accessed via HTTP, not HTTPS. E.g. // HTTP reference on a HTTPS site <script src="http://the-cdn.tld/player.js"></script> Simply accessing this one JS assets via HTTP and not HTTPS will cause the browser security warning which we need to get rid of. The provider of the JS file does not support an HTTPS equivalent (like Google Analytics does). We would ideally love to just do the following, but the provider does not have this: // HTTPS reference on a HTTPS site <script src="https://the-cdn.tld/player.js"></script> One option we had was to just download a copy of the JS file and serve it on the HTTPS site, however we have concerns with this as it is not recommended by the provider and will not include updates from them. Assuming we cannot do that, we were thinking a possible other option would be to use a SWF file as a proxy. We were thinking that we could have one of our flash guys create a SWF that loads in the HTTP-served JS file to the page. We were wondering that if this SWF makes the request, would that prevent the browser from showing the security warning or not? I assumed that we would still see the warning since the SWF is still making the request through the browser, but I wanted to see what the hive mind thinks.

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  • Java JSTL / EL: nesting

    - by NoozNooz42
    I really don't know how to name this question, it's great if anyone with 2K+ rep can edit this title to better reflect my question (the fact that I can't name this easily is probably why I can't Google the solution). I've got this, which is working: <c:choose> <c:when test="${sometest}"> Hello, world! </c:when> <c:otherwise> <fmt:message key="${page.title}" /> </c:otherwise> </c:choose> And I want to change it to this: <c:choose> <c:when test="${sometest}"> <c:set var="somevar" scope="page" value="Hello, world!"/> </c:when> <c:otherwise> <c:set var="somevar" scope="page" value="<fmt:message key="${page.title}">" </c:otherwise> </c:choose But of course the following line ain't correct: <c:set var="somevar" scope="page" value="<fmt:message key="${page.title}">" How can I assign to the somevar variable the string resulting from a call?

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  • Overlaying 2D paths on UIImage without scaling artifacts

    - by tat0
    I need to draw a path along the shape of an image in a way that it is always matching its position on the image independent of the image scale. Think of this like the hybrid view of Google Maps where streets names and roads are superimposed on top of the aerial pictures. Furthermore, this path will be drawn by the user's finger movements and I need to be able to retrieve the path keypoints on the image pixel coordinates. The user zooms-in in order to more precisely set the paths location. I manage to somehow make it work using this approach: -Create a custom UIView called CanvasView that handles touches interaction and delivers scaling, rotation, translation values to either the UIImageView or PathsView (see bellow) depending on a flag: deliverToImageOrPaths. -Create a UIImageView holding the base image. This is set as a children of CanvasView -Create a custom UIView called PathsView that keeps track of the 2D paths geometry and draws itself with a custom drawRect. This is set as children of the UIImageView. So hierarchy: CanvasView - UIImageView -PathsView In this way when deliverToImageOrPaths is YES, finger gestures transforms both the UIImageView and its child PathsView. When deliverToImageOrPaths is NO the gestures affect only the PathsView altering its geometry. So far so good. QUESTION: The problem I have is that when scaling the base UIImageView (via its .transform property) the PathsView is scaled with aliasing artifacts. drawRect is still being called on the PathsView but I guess it's performing the drawing using the original buffer size and then interpolating. How can I solve this issue? Are there better ways to implement these features? PS: I tried changing the PathsView layer class to CATiledLayer with levelsOfDetailBias 4 and levelsOfDetail 4. It solves the aliasing problem to some extent but it's unacceptable slow to render.

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  • How do I begin reading source code?

    - by anonnoir
    I understand the value of reading source code, and I am trying my best to read as much as I can. However, every time I try getting into a 'large' (i.e. complete) project of sorts, I am overwhelmed. For example, I use Anki a lot when revising languages. Also, I'm interested in getting to know how an audio player works (because I have some project ideas), hence quodlibet on Google Code. But whenever I open the source code folders for the above programs, there are just so many files that I don't know where or what to begin with. I think that I should start with files marked init.py but I can't see the logical structure of the programs, or what reasoning was applied when the original writer divided his modules the way he did. Hence, my questions: How/where should I begin reading source? Any general tips or ideas? How does a programmer keep in mind the overall structure and logic of the program, especially for large projects, and is it common not to document that structure? As an open source reader, must I look through all of the code and get a bird's eye view of the code and libraries, before even being able to proceed? Would an IDE like Eclipse SDK (with PyDev) help with code-reading? Thanks for the help; I really appreciate your helping me.

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  • how to insert data if it contain apostrophe ?

    - by angel ansari
    Actally my task is load csv file into sql server using c# so i have split it by comma my problem is that some field's data contain apostrop and i m firing insert query to load data into sql so its give error my coding like that using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.IO; using System.Data.SqlClient; namespace tool { public partial class Form1 : Form { StreamReader reader; SqlConnection con; SqlCommand cmd; int count = 0; //int id=0; FileStream fs; string file = null; string file_path = null; SqlCommand sql_del = null; public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { OpenFileDialog file1 = new OpenFileDialog(); file1.ShowDialog(); textBox1.Text = file1.FileName.ToString(); file = Path.GetFileName(textBox1.Text); file_path = textBox1.Text; fs = new FileStream(file_path, FileMode.Open, FileAccess.Read); } private void button2_Click(object sender, EventArgs e) { if (file != null ) { sql_del = new SqlCommand("Delete From credit_debit1", con); sql_del.ExecuteNonQuery(); reader = new StreamReader(file_path); string line_content = null; string[] items = new string[] { }; while ((line_content = reader.ReadLine()) != null) { if (count >=4680) { items = line_content.Split(','); string region = items[0].Trim('"'); string station = items[1].Trim('"'); string ponumber = items[2].Trim('"'); string invoicenumber = items[3].Trim('"'); string invoicetype = items[4].Trim('"'); string filern = items[5].Trim('"'); string client = items[6].Trim('"'); string origin = items[7].Trim('"'); string destination = items[8].Trim('"'); string agingdate = items[9].Trim('"'); string activitydate = items[10].Trim('"'); if ((invoicenumber == "-") || (string.IsNullOrEmpty(invoicenumber))) { invoicenumber = "null"; } else { invoicenumber = "'" + invoicenumber + "'"; } if ((destination == "-") || (string.IsNullOrEmpty(destination))) { destination = "null"; } else { destination = "'" + destination + "'"; } string vendornumber = items[11].Trim('"'); string vendorname = items[12].Trim('"'); string vendorsite = items[13].Trim('"'); string vendorref = items[14].Trim('"'); string subaccount = items[15].Trim('"'); string osdaye = items[16].Trim('"'); string osaa = items[17].Trim('"'); string osda = items[18].Trim('"'); string our = items[19].Trim('"'); string squery = "INSERT INTO credit_debit1" + "([id],[Region],[Station],[PONumber],[InvoiceNumber],[InvoiceType],[FileRefNumber],[Client],[Origin],[Destination], " + "[AgingDate],[ActivityDate],[VendorNumber],[VendorName],[VendorSite],[VendorRef],[SubAccount],[OSDay],[OSAdvAmt],[OSDisbAmt], " + "[OverUnderRecovery] ) " + "VALUES " + "('" + count + "','" + region + "','" + station + "','" + ponumber + "'," + invoicenumber + ",'" + invoicetype + "','" + filern + "','" + client + "','" + origin + "'," + destination + "," + "'" + (string)agingdate.ToString() + "','" + (string)activitydate.ToString() + "','" + vendornumber + "',' " + vendorname + "',' " + vendorsite + "',' " + vendorref + "'," + "'" + subaccount + "','" + osdaye + "','" + osaa + "','" + osda + "','" + our + "') "; cmd = new SqlCommand(squery, con); cmd.CommandTimeout = 1500; cmd.ExecuteNonQuery(); } label2.Text = count.ToString(); Application.DoEvents(); count++; } MessageBox.Show("Process completed"); } else { MessageBox.Show("path select"); } } private void button3_Click(object sender, EventArgs e) { this.Close(); } private void Form1_Load(object sender, EventArgs e) { con = new SqlConnection("Data Source=192.168.50.200;User ID=EGL_TEST;Password=TEST;Initial Catalog=EGL_TEST;"); con.Open(); } } } vendername field contain data (MCCOLLISTER'S TRANSPORTATION) so how to pass this data

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  • How do I implement page authorizaton in ASP.NET using a SQL store instead of web.config?

    - by drachenstern
    For instance, the way we're doing it now is like thus: (in the web.config) <location path="somePath"> <system.web> <authorization> <allow roles="approvedRoles"/> <deny users="*"/> </authorization> </system.web> </location> And what I would like to do instead is to store this information in SQL somewhere so that we can manipulate the information more easily. But we want to keep the same functionality that having the information in web.config provides, just like we can use a SqlRoleProvider instead of hardcoding roles in the app. So in other words, if a user currently tries to goto "somePath" and they're not a member of "approvedRoles" then they get redirected back to default.aspx, and if they are a member of "approvedRoles" then they get the page. I want to do the same thing, but without using web.config as the authorization mechanism. So what I'm NOT asking is how do I go about defining roles, or how do I handle logging in to the database, but specifically how do I store the above information in SQL instead of web.config. Actually, I'll take "anywhere but web.config" for now. Any ideas? Is this possible using a "Provider" class? I'm just looking for pointers on what to inherit and maybe some technet documentation. In this regard my googlefoo is lacking since I don't really know where to point. Am I really only looking for AzMan? Is this location-authorization-via-SQL already defined in the default aspnetdb somewhere and I'm missing it? For that matter, has this question already been asked on SO and I've missed it? What would you google?

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  • Problem creating checklist (similar to TouchCells sample code) app for iPhone. Random cells get chec

    - by Jonah
    I've been having a problem creating a checklist in the style of the TouchCells example from the Apple sample code. Basically, it is a table that allows multiple selection of its items and gives each selected item a check mark. The problem I'm having is that when I select an item and then scroll down the screen, another item (off the screen) will randomly be selected. It seems that it is usually the next cell to be loaded on the screen. I couldn't figure out what I was doing wrong so I tested it with Apple's TouchCells code. In their program though, they only have 6 cells and there is no room to scroll. So, I duplicated some of the items from the plist file to make more cells and... the same problem pops up. If you select a cell and then scroll, another cell will randomly be selected. Update I recently tried the iPhone Dev Cookbook sample code named "Checks" and... you guessed it, the same problem. Here's the link: http://code.google.com/p/cookbooksamples/downloads/list This is driving me nuts. Is it a bug or am I doing something wrong? Does anyone know how to fix this? Thanks! Also, does anyone know of any sample code that shows how to do this?

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  • Functional way to get a matrix from text

    - by Elazar Leibovich
    I'm trying to solve some Google Code Jam problems, where an input matrix is typically given in this form: 2 3 #matrix dimensions 1 2 3 4 5 6 7 8 9 # all 3 elements in the first row 2 3 4 5 6 7 8 9 0 # each element is composed of three integers where each element of the matrix is composed of, say, three integers. So this example should be converted to #!scala Array( Array(A(1,2,3),A(4,5,6),A(7,8,9), Array(A(2,3,4),A(5,6,7),A(8,9,0), ) An imperative solution would be of the form #!python input = """2 3 1 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 0 """ lines = input.split('\n') print lines[0] m,n = (int(x) for x in lines[0].split()) array = [] row = [] A = [] for line in lines[1:]: for elt in line.split(): A.append(elt) if len(A)== 3: row.append(A) A = [] array.append(row) row = [] from pprint import pprint pprint(array) A functional solution I've thought of is #!scala def splitList[A](l:List[A],i:Int):List[List[A]] = { if (l.isEmpty) return List[List[A]]() val (head,tail) = l.splitAt(i) return head :: splitList(tail,i) } def readMatrix(src:Iterator[String]):Array[Array[TrafficLight]] = { val Array(x,y) = src.next.split(" +").map(_.trim.toInt) val mat = src.take(x).toList.map(_.split(" "). map(_.trim.toInt)). map(a => splitList(a.toList,3). map(b => TrafficLight(b(0),b(1),b(2)) ).toArray ).toArray return mat } But I really feel it's the wrong way to go because: I'm using the functional List structure for each line, and then convert it to an array. The whole code seems much less efficeint I find it longer less elegant and much less readable than the python solution. It is harder to which of the map functions operates on what, as they all use the same semantics. What is the right functional way to do that?

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  • Algorithm to determine which points should be visible on a map based on zoom

    - by lgratian
    Hi! I'm making a Google Maps-like application for a course at my Uni (not something complex, it should load the map of a city for example, not the whole world). The map can have many layers, including markers (restaurants, hospitals, etc.) The problem is that when you have many points and you zoom out the map it doesn't look right. At this zoom level only some points need to be visible (and at the maximum map size, all points). The question is: how can you determine which points should be visible for a specified zoom level? Because I have implemented a PR Quadtree to speed up rendering I thought that I could define some "high-priority" markers (that are always visible, defined in the map editor) and put them in a queue. At each step a marker is removed from the queue and all it's neighbors that are at least D units away (D depends on the zoom levels) are chosen and inserted in the queue, and so on. Is there any better way than the algorithm I thought of? Thanks in advance!

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  • A business Case for Enterprise Python

    - by Srirangan
    Hi all, This will not be a "programming" question but more technology / platform related question. I'm trying to figure out whether Python can be a suitable Java alternative for enterprise / web applications. Which are the ideal cases where you would prefer to use Python instead of Java? How would a typical Python web application (databases/sessions/concurrency) perform as compared to a typical Java application? How do specific Python frameworks square up against Java based frameworks (Spring, SEAM, Grails etc.)? For businesses, switching from the Java infrastructure to a Python infrastructure .. is it too hard/expensive/resource intensive/not viable? Also shed some light on the business case for providing a Python + Google AppEngine based solution to the end customer. Will it be cost effective in an typical scenario? Sorry if I am asking too wide a question, I would have liked to keep it specific, but I need your help to evaluate Python as a whole from the perspectives of the programmers, service providing company and end business customer. For an SME, a Python/GoogleAppEngine based technology stack is a clear scalable and affordable platform. But what about a large MNC that already has a lot invested in Java. Thank you so much. I am researching this myself and will gladly share my conclusions here! Thank you, Srirangan

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  • How to bind Data to Dropdownlist in Kendo Ui Mobile

    - by dinesh Haraveer
    I have been using Kendo Mobile to develop an application, previously same application i have done in Kendo web,it's works fine.The main problem is that i have to bind data to two dropdownlist which the below code i have written,when my application is running it show an error like "Microsoft JScript runtime error: Object doesn't support property or method 'append'". in HTML <div id="forms" data-role="view" data-title="Form Elements" data-init="initForm"> <table> <tr> <td> <label style="margin-left: 20px"> Company:</label> </td> <td> <select id="ddlCompany" style="width: 200px"> <option>Select Company</option> </select> </td> <td class="style1"> <label style="margin-left: 20px"> Category:</label> </td> <td> <select id="ddlCategory" style="width: 200px"> <option>Select Category</option> </select> </td> <td> <label style="margin-left: 20px"> Product :</label> </td> <td> <select id="ddlProduct" style="width: 200px"> <option>Select Product</option> </select> </td> </tr> </table> </div> function initForm() { $.ajax({ type: "POST", contentType: "application/json; charset=utf-8", url: "FlashReportMobileWebService.asmx/GetCompany", dataType: "json", success: function (data) { for (i = 0; i < data.d.length; i++) { ddlCompany.append($("<option></option>").val(data.d[i].Company).html(data.d[i].Company)); }; $("#ddlCompany").kendoDropDownList(); } }); $.ajax({ type: "POST", contentType: "application/json; charset=utf-8", url: "FlashReportMobileWebService.asmx/ToCategoryDropDown", dataType: "json", success: function (data) { for (i = 0; i < data.d.length; i++) { ddlCategory.append($("<option></option>").val(data.d[i].Category).html(data.d[i].Category)); }; $("#ddlCategory").kendoDropDownList(); }, failure: function (msg) { alert(msg); } }); } $("#ddlCategory").change( function (e) { var ddlProduct= $("#ddlProduct"); var dataItem = $("#ddlCategory").val(); $.ajax({ type: "POST", contentType: "application/json; charset=utf-8", data: "{'Category':'" + dataItem + "'}", url: "FlashReportWebService.asmx/ToFillProductDropDown", dataType: "json", success: function (data) { ddlProduct.empty(); for (i = 0; i < data.d.length; i++) { ddlProduct.append($("<option></option>").val(data.d[i].ProductName).html(data.d[i].ProductName)); }; $("#ddlProduct").kendoDropDownList(); }, failure: function (msg) { alert(msg); } }); }); var app = new kendo.mobile.Application(document.body); thanks for reading this

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  • twitter bootstrap typeahead (method 'toLowerCase' of undefined)

    - by mmoscosa
    I am trying to use twitter bootstrap to get the manufacturers from my DB. Because twitter bootstrap typeahead does not support ajax calls I am using this fork: https://gist.github.com/1866577 In that page there is this comment that mentions how to do exactly what I want to do. The problem is when I run my code I keep on getting: Uncaught TypeError: Cannot call method 'toLowerCase' of undefined I googled around and came tried changing my jquery file to both using the minified and non minified as well as the one hosted on google code and I kept getting the same error. My code currently is as follows: $('#manufacturer').typeahead({ source: function(typeahead, query){ $.ajax({ url: window.location.origin+"/bows/get_manufacturers.json", type: "POST", data: "", dataType: "JSON", async: false, success: function(results){ var manufacturers = new Array; $.map(results.data.manufacturers, function(data, item){ var group; group = { manufacturer_id: data.Manufacturer.id, manufacturer: data.Manufacturer.manufacturer }; manufacturers.push(group); }); typeahead.process(manufacturers); } }); }, property: 'name', items:11, onselect: function (obj) { } }); on the url field I added the window.location.origin to avoid any problems as already discussed on another question Also before I was using $.each() and then decided to use $.map() as recomended Tomislav Markovski in a similar question Anyone has any idea why I keep getting this problem?! Thank you

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  • C# 4.0: casting dynamic to static

    - by Kevin Won
    This is an offshoot question that's related to another I asked here. I'm splitting it off because it's really a sub-question: I'm having difficulties casting an object of type dynamic to another (known) static type. I have an ironPython script that is doing this: import clr clr.AddReference("System") from System import * def GetBclUri(): return Uri("http://google.com") note that it's simply newing up a BCL System.Uri type and returning it. So I know the static type of the returned object. now over in C# land, I'm newing up the script hosting stuff and calling this getter to return the Uri object: dynamic uri = scriptEngine.GetBclUri(); System.Uri u = uri as System.Uri; // casts the dynamic to static fine Works no problem. I now can use the strongly typed Uri object as if it was originally instantiated statically. however.... Now I want to define my own C# class that will be newed up in dynamic-land just like I did with the Uri. My simple C# class: namespace Entity { public class TestPy // stupid simple test class of my own { public string DoSomething(string something) { return something; } } } Now in Python, new up an object of this type and return it: sys.path.append(r'C:..path here...') clr.AddReferenceToFile("entity.dll") import Entity.TestPy def GetTest(): return Entity.TestPy(); // the C# class then in C# call the getter: dynamic test = scriptEngine.GetTest(); Entity.TestPy t = test as Entity.TestPy; // t==null!!! here, the cast does not work. Note that the 'test' object (dynamic) is valid--I can call the DoSomething()--it just won't cast to the known static type string s = test.DoSomething("asdf"); // dynamic object works fine so I'm perplexed. the BCL type System.Uri will cast from a dynamic type to the correct static one, but my own type won't. There's obviously something I'm not getting about this...

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  • What is the correct way to implement a massive hierarchical, geographical search for news?

    - by Philip Brocoum
    The company I work for is in the business of sending press releases. We want to make it possible for interested parties to search for press releases based on a number of criteria, the most important being location. For example, someone might search for all news sent to New York City, Massachusetts, or ZIP code 89134, sent from a governmental institution, under the topic of "traffic". Or whatever. The problem is, we've sent, literally, hundreds of thousands of press releases. Searching is slow and complex. For example, a press release sent to Queens, NY should show up in the search I mentioned above even though it wasn't specifically sent to New York City, because Queens is a subset of New York City. We may also want to implement "and" and "or" and negation and text search to the query to create complex searches. These searches also have to be fast enough to function as dynamic RSS feeds. I really don't know anything about search theory, or how it's properly done. The way we are getting by right now is using a data mart to store the locations the releases were sent to in a single table. However, because of the subset thing mentioned above, the data mart is gigantic with millions of rows. And we haven't even implemented cities yet, and there are about 50,000 cities in the United States, which will exponentially increase the size of the data mart by so much I'm afraid it just won't work anymore. Anyway, I realize this is not a simple question and there won't be a "do this" answer. However, I'm hoping one of you can point me in the right direction where I can learn about how massive searches are done? Because I really know nothing about it. And such a search engine is turning out to be incredibly difficult to make. Thanks! I know there must be a way because if Google can search the entire internet we must be able to search our own database :-)

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  • NSString to NSURL objects

    - by user337844
    Hello, I have an array that I populated with my plist file, which looks something like this: <array> <string>http://www.apple.com</string> <string>http://www.google.com</string> <string>http://www.amazon.com</string> </array> So, I'm looking to convert these NSString objects to NSURL objects when I call them in my didSelectRowAtIndexPath method. Any ideas? This is what I have right now: - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { NSInteger row = [indexPath row]; if (self.viewController == nil) { TemplateViewController *details = [[TemplateViewController alloc] initWithNibName:@"TemplateViewController" bundle:nil]; self.viewController = details; [details release]; } NSString *tempURLString = [tieroneurlArray objectAtIndex:row]; NSURL *loadingUrl = [NSURL URLWithString:tempURLString]; [tieroneurlArray addObject:loadingUrl]; viewController.title = [NSString stringWithFormat:@"%@", [tieroneArray objectAtIndex:row]]; [self.viewController setTableURL:[tieroneurlArray objectAtIndex:row]]; TemplateAppAppDelegate *delegate = [[UIApplication sharedApplication] delegate]; [delegate.templateNavController pushViewController:viewController animated:YES]; } And this is how I load the array with the plist: - (void)viewDidLoad { [super viewDidLoad]; NSString *path = [[NSBundle mainBundle] pathForResource:@"tier1Names" ofType:@"plist"]; tieroneArray = [[NSMutableArray alloc] initWithContentsOfFile:path]; NSString *tableURL = [[NSBundle mainBundle] pathForResource:@"tier1URL" ofType:@"plist"]; tieroneurlArray = [[NSMutableArray alloc] initWithContentsOfFile:tableURL]; }

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