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• Shortcut "or-assignment" (|=) operator in Java

  - by Dr. Monkey

  I have a long set of comparisons to do in Java, and I'd like to know if one or more of them come out as true. The string of comparisons was long and difficult to read, so I broke it up for readability, and automatically went to use a shortcut operator |= rather than negativeValue = negativeValue || boolean. boolean negativeValue = false; negativeValue |= (defaultStock < 0); negativeValue |= (defaultWholesale < 0); negativeValue |= (defaultRetail < 0); negativeValue |= (defaultDelivery < 0); I expect negativeValue to be true if any of the default<something> values are negative. Is this valid? Will it do what I expect? I couldn't see it mentioned on Sun's site or stackoverflow, but Eclipse doesn't seem to have a problem with it and the code compiles and runs.

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• ASP.NET Javascript Error :: sys.webforms.pagerequestmanagerservererrorexception

  - by Andy Evans

  I have an ASP.NET site that uses JQuery and ASP.NET UpdatePanel and ScriptManager. On one page in particular, I get a javascript error: sys.webforms.pagerequestmanagerservererrorexception: Index and length must refer to a location within the string. Parameter name:length ScriptResourse.axd Code: 0 Here's what's in the master page: <asp:ScriptManager runat="server" ID="ScriptMgr"></asp:ScriptManager> <asp:UpdatePanel runat="server" ID="UpdatePanelMaster"> <ContentTemplate> </ContentTemplate> </asp:UpdatePanel> In the page in question: <asp:Content ID="ContentHeadEdit" ContentPlaceHolderID="ContentHeadMaster" Runat="Server"> <script type="text/javascript"> $(document).ready(function() { $('#<%= ButtonSave.ClientID %>').button(); Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler); function EndRequestHandler(sender, args) { $('#<%= ButtonSave.ClientID %>').button(); } }); </script> </asp:Content>

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• Debugging dynamic sql + dynamic tables in MS SQL Server 2008.

  - by Hamish Grubijan

  Hi, I have a messy stored procedure which uses dynamic sql. I can debug it in runtime by adding print @sql; where @sql; is the string containing the dynamic SQL, right before I call execute (@sql);. Now, the multi-page stored procedure also creates dynamic tables and uses them in a query. I want to print those tables to the console right before I do an execute, so that I know exactly what the query is trying to do. However, the SQL Server 08 does not like that. When I try: print #temp_table; and try to compile the S.P. I get this error: The name "#temp_table" is not permitted in this context. Valid expressions are constants, constant expressions, and (in some contexts) variables. Column names are not permitted. Please help.

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• insert into sql table column as GUID

  - by loviji

  I have tried with ado.net create table columnName with unique name. as uniquename I use new Guid() Guid sysColumnName = new Guid(); sysColumnName = Guid.NewGuid(); string stAddColumn = "ALTER TABLE " + tableName + " ADD " + sysColumnName.ToString() + " " + convertedColumnType + " NULL"; SqlCommand cmdAddColumn = new SqlCommand(stAddColumn, con); cmdAddColumn.ExecuteNonQuery(); con.Close(); and it fails: System.Data.SqlClient.SqlException: Incorrect syntax near '-'. ? System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) ? System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) now question, how can i fix it, or how can use different way to create unique column?

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• Problems with Date, preparedStatement, JDBC and PostgreSQL

  - by GuidoMB

  I Have to get a movie from a PostgreSQL database that matches a given title and release date. title is a character(75) and releaseDate is a date. I Have this code: String query = "SELECT * FROM \"Movie\" WHERE title = ? AND \"releaseDate\" = ?)"; Connection conn = connectionManager.getConnection(); PreparedStatement stmt = conn.prepareStatement(query); java.sql.Date date = new java.sql.Date(releaseDate.getTime()); stmt.setString(1, title); stmt.setDate(2, date); ResultSet result = stmt.executeQuery(); but it's not working because the releaseDate is not matching when it should. The query SELECT * FROM "Movie" WHERE title = A_MOVIE AND "releaseDate" = A_DATE works perfectly on a command shell using psql

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• unexpected output

  - by tech-ref

  hi, i wrote a function wich works as expected but i don't understand why the output is like that. function datatype prop = Atom of string | Not of prop | And of prop*prop | Or of prop*prop; (* XOR = (A And Not B) OR (Not A Or B) *) local fun do_xor (alpha,beta) = Or( And( alpha, Not(beta) ), Or(Not(alpha), beta)) in fun xor (alpha,beta) = do_xor(alpha,beta); end; test val result = xor(Atom "a",Atom "b"); output val result = Or (And (Atom #,Not #),Or (Not #,Atom #)) : prop thanks again (specially zeuxcg)

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• Issue parsing RSS xml

  - by cw

  Hello, I'm having an issue using Linq to XML parsing the following XML. What I am doing is getting the element checking if it's what I want, then moving to the next. I am pretty sure it has to do with the xmlns, but I need this code to work with both this style and normal style RSS feeds (no xmlns). Any ideas? <?xml version="1.0" encoding="UTF-8"?> <rdf:RDF xmlns:rdf="http://someurl" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"> <channel rdf:about="http://someurl"> XElement currentLocation = startElementParameter; foreach (string x in ("channel\\Title").Split('\\')) { if (condition1 == false) { continue; } else if (condition2 == false) { break; } else { // This is returning null. currentLocation = currentLocation.Element(x); } } Thanks!

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• text indexes vs integer indexes in mysql

  - by imanc

  Hey, I have always tried to have an integer primary key on a table no matter what. But now I am questioning if this is always necessary. Let's say I have a product table and each product has a globally unique SKU number - that would be a string of say 8-16 characters. Why not make this the PK? Typically I would make this field a unique index but then have an auto incrementing int field as the PK, as I assumed it would be faster, easier to maintain, and would allow me to do things like get the last 5 records added with ease. But in terms of optimisation, assuming I'd only ever be matching the full text field and next doing text matching queries (e.g. like %%) can you guys think of any reasons not to use a text based primary key, most likely of type varchar()? Cheers, imanc

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• Problem reading hexadecimal buffer from C socket

  - by Olaseni

  I'm using the SDL_net sockets API to create a server and client. I can easily read a string buffer, but when I try to send hexadecimal data, recv gets the length, but I cannot seem to be a able to read the buffer contents. IPaddress ip; TCPsocket server,client; int bufSize = 1024; char message[bufSize]; int len; server = SDLNet_TCP_Open(&ip); client = SDLNet_TCP_Accept(server); len = SDLNet_TCP_Recv(client,message,bufSize); Here's a snippet. the buffer length "len" is set (i.e. message length) but I can't get to the data contents in the message buffer. Some sample bind_transmitter PDU data was sent by a random client to the server at that port. I can't read the PDU (SMPP).

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• codingBat last2 using regex

  - by polygenelubricants

  Okay guys, this is similar to my repeatEnd and wordEnds efforts; I want to solve this codingBat Warmup-2 question using only regex-based techniques as a "brain gymnastics" exercise. This solution works for codingBat tests: public int last2(String str) { return str.isEmpty() ? 0 : str.split( str.replaceAll( ".*(.)(.)", "$1(?=$2)" //.replaceAll("(\\$.)", "\\\\\\\\Q$1\\\\\\\\E") ), -1 ).length - 1 - 1; } The monstrous octo-slashes aren't needed to pass codingBat, but is needed for a proper regex-based solution. That is, if I want this (and I do!): assert last2("..+++...++") == 2; I'd have to uncomment the second .replaceAll. I'm just wondering if others can come up with a simpler, more elegant regex solution for this problem. Preferably one that doesn't contain octo-slashes.

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• Regex for [a-zA-Z0-9\-] with dashes allowed in between but not at the start or end

  - by orokusaki

  I'm using Python and I'm not trying to extract the value, but rather test to make sure it fits the pattern. allowed values: spam123-spam-eggs-eggs1 spam123-eggs123 spam 123 eggs123 I just can't have a dash at the starting or the end. There is a question on here that works in the opposite direction by getting the string value after the fact, but I simply need to test for the value so that I can disallow it. Also, it can be a maximum of 25 chars long, but a minimum of 4 chars long. Here's what I've come up with after some experimentation with lookbehind, etc: # Nothing here

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• TextView defined in main.xml - how to "name" it to be able to use - setText() method?

  - by Oliver Goossens

  Hi, I am exploring android and developement and I found one problem. My app UI is defined in main.xml I have 2 texts and 2 buttons defined - easy app. I read that I may be able to change TEXT in the ACTIVITY using the setText() method. And thats the problem - how do I POINT the setText() Method? How do I tell it to change a specified text? If I would declare the TextView inside the Activity with NEW TextView NAME Object, I would just need to use NAME.setText(STRING)... But I didnt so i dont have anything like NAME of the object? How can this be done? I read something about r.IDs but I truly dont have a idea how to use them, where to find them and how to implement it .... Please advise Thank you Oliver

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• jquery write protection in textarea for wildcards

  - by Juri

  Hi everybody. Does anyone know a possibilty to protect a string-wildcard from changing in a textarea? HTML: <textarea name="mail_text" id="mail_text"> {salutation} {recipient}, thanks for your email. Regards {username} </textarea> I would like to catch when someone tries to change one of the wildcards: {salutation},*{recipient}* and {username} $("textarea").keyup(function() { var val = $(this).val(); //protect the wildcards }); Thanks!

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• Regex pattern problem in python

  - by mridang

  I need to extract parts of a string using regex in Python. I'm good with basic regex but I'm terrible at lookarounds. I've shown two sample records below. The last big is always a currency field e.g. in the first one it is 4,76. In the second one it is 2,00. The second has an account number that is the pattern of \d{6}-\d{6}. Anything after that is the currency. 24.02 24.02VALINTATALO MEGAHERTSI4,76- 24.02 24.02DOE MRIDANG 157235-1234582,00- Could you help me out with this regex? What I've written so far is given below but it considers everything after the 'dash' in the account number to be the currency. .*?(\d\d\.\d\d)(.*?)\s*(?<!\d{6}-\d{6})(\d*,\d\d) Thanks in advance

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• Packing a long binary integer in Ruby

  - by user1056142

  I'm trying to send a very long binary integer over UDP (on the order of 200 bits). When I try to use Array's pack method, it complains the string I'm trying to convert is too large. Am I going about this the wrong way? ruby-1.8.7-p352 :003 > [0b1101001010101101111010100101010011010101010110010101010101010010010101001010101010101011101010101010101111010101010101010101].pack('i') RangeError: bignum too big to convert into `unsigned long' from (irb):3:in `pack' from (irb):3 This number is supposed to represent a DNS query packet (this is for a homework assignment; we're not allowed to use any DNS libraries).

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• How to register a service with Mono.ZeroConf?

  - by pablo

  Hi, I'm trying to test the ZeroConf sample at http://www.mono-project.com/Mono.Zeroconf. I'm running OpenSuse 11 and Mono 2.2. My server code is: using System; using Mono.Zeroconf; namespace zeroconftestserver { class MainClass { public static void Main(string[] args) { RegisterService service = new RegisterService (); service.Name = "test server"; service.RegType = "_daap._tcp"; service.ReplyDomain = "local."; service.Port = 6060; // TxtRecords are optional TxtRecord txt_record = new TxtRecord (); txt_record.Add ("Password", "false"); service.TxtRecord = txt_record; service.Register(); Console.WriteLine("Service registered!"); Console.ReadLine(); } } } But I can't find my registered service with the sample client browser code nor with mzclient. Thanks!

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• Print html document from Windows Service without print dialog

  - by Anup Pal

  I am using a windows service and i want to print a .html page when the service will start. I am using this code and it's printing well. But a print dialog box come, how do i print without the print dialog box? public void printdoc(string document) { Process printjob = new Process(); printjob.StartInfo.FileName = document; printjob.StartInfo.UseShellExecute = true; printjob.StartInfo.Verb = "print"; printjob.StartInfo.CreateNoWindow = true; printjob.StartInfo.WindowStyle = ProcessWindowStyle.Hidden; printjob.Start(); } Have there any other way to print this without showing the print dialog box.

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• WebTest Visual Studio Test problems with amf call

  - by Lieven Cardoen

  If I browse to a flex application when recording with VS Test, I can see the calls to WebORB (amf calls). However, when stopping the recording this is what happens: First, Visual Studio detects dynamic parameters, but stays around 20%, and never gets through it. Second, if I cancel the detecting dynamic parameters, and run the web test, the calls to WebORB (amf calls) do not work. In fact, in VS2010, the call to WebORB stays on Submitting... Now, this web test, does it only record url's and query string variables, or does it record the whole request? If it records the whole request, the call to WebORB should work, but it doesn't.

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• How to validate parameter values against a data source in Crystal Reports 2008

  - by mjh41

  I have a report designed in Crystal 2008. The report has a parameter field called "Member ID" that I want to use to get a string input from the user running the report. However, I want to do some sort of validation to ensure that the ID they entered is valid (it exists in a database table that I already have set up). Is there any way to do this? I know you can set up dynamic parameters that would give the user a dropdown list of Member ID values to choose from based on the data stored in my database table. But I don't want to make the user sort through thousands of IDs in a dropdown. I just want them to manually enter an ID and then have the report check the entered value against a database table. Is this possible?

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• c# Unit Test: Writing to Settings in unit test does not save values in user.config

  - by HorstWalter

  I am running a c# unit test (VS 2008). Within the test I do write to the settings, which should result in saving the data to the user.config. Settings.Default.X = "History"; // X is string Settings.Default.Save(); But this simply does not create the file (I have crosschecked under "C:\Documents and Settings\HW\Local Settings\Application Data"). If I create the same stuff as a Console application, there is no problem persisting the data (same code). Is there something special I need to consider doing this in a UnitTest?

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• Refactor java code

  - by Alfred

  I would like to refactor code which looks something like this: String input; // input from client socket. if (input.equals(x) { doX(); } else if (input.equals(y) { doY(); } else { unknown_command(); } It is code which checks input from socket to perform some action, but I don't like the if else construction because every time a new command is added to the server (code) a new if else has to be added which is ugly. Also when deleting a command the if else has to be modified.

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• Convert XML attributes to a Dictionary in Linq to XML

  - by NateD

  I've got a program that needs to convert two attributes of a particular tag to the key and value of an Dictionary<int,string>. The XML looks like this: (fragment) <startingPoint coordinates="1,1" player="1" /> and so far my LINQ looks something like this: XNamespace ns = "http://the_namespace"; var startingpoints = from sp in xml.Elements(ns+"startingPoint") from el in sp.Attributes() select el.Value; Which gets me a nice IEnumerable full of things like "1,1" and "1", but there should be a way to adapt something like this answer to do attributes instead of elements. Little help please? Thank you!

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• PHP Curl's Proxy feature causes no information to be returned

  - by Grant David Bachman

  I'm working on a PHP script right now which sends requests to our school's servers to get real-time information about class sizes for different courses. The script runs perfectly fine when I don't use a proxy, returning a string full of course numbers and available seats. However, I want to make this a service for the students, and I'm afraid that if I make too many requests my ip will get blocked. So I'm attempting to do this through a proxy, with no success. As soon as I add the CURLOPT_HTTPPROXYTUNNEL and CURLOPT_PROXY fields to my requests nothing gets returned. I'm not even sure how to troubleshoot it at this point since I'm not getting an error message of any kind. Does anyone know what's going on or how to at least troubleshoot it?

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• i18n with webpy

  - by translation..

  Hello, i Have a problem with i18n, using webpy. I have followed this : http://webpy.org/cookbook/i18n_support_in_template_file So, in my .wsgi there is : #i18n gettext.install('messages',I18N_PATH,unicode=True) gettext.translation('messages',I18N_PATH,languages=['fr_FR','en_US']).install(True) So i ran : pygettext.py -a -v -d messages -o i18n/messages.po controllers/*.py views/*.html I have copied and translated messages.po, I have also change the "content-type" and the "content-transfer-encoding: "Content-Type: text/plain; charset=utf-8\n" "Content-Transfer-Encoding: UTF-8\n" And i ran this command: msgfmt -v -o i18n/fr_FR/LC_MESSAGES/messages.mo i18n/fr_FR/LC_MESSAGES/messages.po >>>93 messages traduits. here is the arborescence of i18n folder: i18n/: en_US fr_FR messages.po i18n/en_US: LC_MESSAGES i18n/en_US/LC_MESSAGES: messages.mo messages.po i18n/fr_FR: LC_MESSAGES i18n/fr_FR/LC_MESSAGES: messages.mo messages.po But when i go in my website (my browser's language is "fr_fr"), i haven't the string translated. And I don't know why. Anyone has an idea? Thanks

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• reading a BYTE as a DWORD in Masm

  - by Help I'm in college

  Hi, once again I'm doing MASM programming. I'm trying to write a procedure using the Irvine32 library where the user enters a string which is put into an array of BYTEs with ReadString. Then it loops over that arrray and determines if each character is a number. However, when I try cmp [buffer + ecx], 30h MASM complains about comparing two things that are not the same size. Is there anyway I could read the ASCII code in each BYTE in the array as a DWORD (or otherwise extract the ASCII value in each BYTE)?

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