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• Crontab: cut line to many lines?

  - by Heoa

  Hard-to-read-line @daily export sunshine="~/logs/Sunshine-`date '+\%F'`" && export sunshineUrl="http://www.sunshine.net/main/search_results.asp?currency_id=1&min_price=&max_price=50000&country_id=241&region_id=&Submit=Search" && mkdir -p $sunshine && cd $sunshine && wget --mirror -l 1 $sunshineUrl Which mark do I need to have it on many lines? @daily <SOME MARK HERE> export sunshine="~/logs/Sunshine-`date '+\%F'`" && <SOME MARK HERE> export sunshineUrl="http://www.sunshine.net/main/search_results.asp?currency_id=1&min_price=&max_price=50000&country_id=241&region_id=&Submit=Search" && <SOME MARK HERE> mkdir -p $sunshine && <SOME MARK HERE> cd $sunshine && wget --mirror -l 1 $sunshineUrl No success by appending \, //, \n or /n.

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• Enumerations and String values in ASP.NET

  - by Jason

  I'm looking for some best practice advice on enumerations and retrieving an associated string value. Given this: public enum SerialKillers { TedBundy, EdGein, AlbertFish, GeorgeBush } What is the best way to get a related string value of the name? Eg. "Ted Bundy", given that the string value may not match the representation in the enumeration. eg "George W Bush" My current thinking is function accepting an enum and returning a string, but would that not mean hard coding the string values (which I prefer not to do)? Is using a resources file where the string can be retrieved via the enumeration too heavy handed? Should I accept the fact I am going to Hell for victimising Ted Bundy by associating him with George Bush?

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• How to access the Principal from a Java service object without using FlexContext?

  - by Marplesoft

  We're building some Java objects that are exposed via BlazeDS to our flex client application. So basically the BlazeDS messagebroker servlet instantiates and invokes methods on these objects in response to client requests. Works great. We're using app server-based authentication and have set up a security constraint on the <destination> elements in the remoting-config.xml file element to prevent unauthenticated clients from being able to access these remote java objects. Again, works fine. However, there are several places within the implementation of these java objects where we want to get the currently logged on user's username. Right now we are doing this via FlexContext.getUserPrincipal(), which gives access to this but we have a nagging concern that we don't like the idea that the implementation of these objects (the service layer) has a hard dependency on a BlazeDS class. But we're not sure how else to get access to this. The same applies to accessing the ServletContext and such. Any ideas?

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• Problem passing json into jquery graph(flot)

  - by Adam McMahon

  I trying to retrieve some json to pass into a flot graph. I know that json is right because I hard coded it to check, but I'm pretty sure that I'm not passing right because It's not showing up. Here's the javascript: var total = $.ajax({ type: "POST", async: false, url: "../api/?key=xxx&api=report&crud=return_months&format=json" }).responseText; //var total = $.evalJSON(total); var plot = $.plot($("#placeholder"),total); here's the json: [ { data: [[1,12], [2,43], [3,10], [4,17], ], label: "E-File"}, { data: [[1,25], [2,35], [3,3], [4,5], ], label: "Bank Products" }, { data: [[1,41], [2,87], [3,30], [4,29], ], label: "All Returns" } ], {series: {lines: { show: true },points: { show: true }}, grid: { hoverable: true, clickable: true }, yaxis: { min: 0, max: 100 }, xaxis: { ticks: [[1,"January"],[2,"February"],[3,"March"],[4,"April"],[5,"May"],[6,"June"],[7,"July"],[8,"August"],[9,"September"],[10,"October"],[11,"November"],[12,"December"]] }}

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• Edit, select value from UITableView on the iPhone

  - by Anthony D

  I have a UITableView with a list of names, representing server configurations. I want the user to be able to select a server configuration, add a server config, edit a server config, or just cancel out of the view and return to the main view. I'm having a hard time trying to figure out how to achieve all of that functionality in this view. To select, the user should be able to just tap the server config name and a check will appear next to the name then the user is taken back to the main view automatically (or use a save button instead?). To edit the server config, I would also like the user to be able to tap the server config name and be taken to a detail screen where changes can be made. How can I accomplish both since I want both to be done by tapping the server name (row)? Right now the cancel button seems out of place since the screen is accessed via a UINavigationController. Any suggestions?

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• PhantomJS not exactly rendering HTML to PNG

  - by John Leonard

  I'm having trouble adjusting PhantomJS to create a PNG file that matches the original browser presentation. Here is the entire sample html file. It's a sankey diagram creating using rCharts and d3-sankey. (You'll need to save the file to your hard drive and view it from there.) I'm running on Windows and using rasterize.js: >> phantomjs.exe rasterize.js test.html test.png ISSUE: Below is a snip of one of the text strings when viewed in a browser: And here is a snip of the same string from the PNG created by PhantomJS: How do I make the text-shadow go away? I've played around with various CSS attributes (text-shadow) and webkit-specific attributes (e.g., -webkit-text-rendering), but can't seem to make it go away. Is this a setting in PhantomJS? in the underlying webkit? or somewhere else? Many thanks!

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• Edite, select value from UITableView on the iPhone

  - by Anthony D

  I have a UITableView with a list of names, representing server configurations. I want the user to be able to select a server configuration, add a server config, edit a server config, or just cancel out of the view and return to the main view. I'm having a hard time trying to figure out how to achieve all of that functionality in this view. To select, the user should be able to just tap the server config name and a check will appear next to the name then the user is taken back to the main view automatically (or use a save button instead?). To edit the server config, I would also like the user to be able to tap the server config name and be taken to a detail screen where changes can be made. How can I accomplish both since I want both to be done by tapping the server name (row)? Right now the cancel button seems out of place since the screen is accessed via a UINavigationController. Any suggestions?

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• Creating a form for editing embedded documents with MongoMapper

  - by Luke Francl

  I'm playing around with MongoMapper but I'm having trouble figuring out how to create a form for an object that has embedded documents. With ActiveRecord, I'd use fields_for but when asked if this would be supported a few months ago, MongoMapper author John Nunemaker wrote: "Nope and nope. It is really [not] that hard with attr_accessor's." OK, fair enough, but how do you write the form for this to work? I'm not interested in using the nested form implementations that are out there because I want to do this the "normal" way as I'm learning about MongoMapper. My model is simple enough - I've got a Person with embedded documents for email addresses, phone numbers, etc. I do not care about updating existing embedded documents. They can be re-created from the form input each time a Person is edited.

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• VS2010 - Add template to New Project window

  - by gbogumil

  I am trying to add a new project template for an often used pattern. Starting from the class library template I have done the following (it still does not show up in the new project window): opened the .vstemplate file changed name and description to 'hard coded' values (my template). The values in there pulled from the csharpui.dll resources. changed the TemplateID, DefaultName, and ProjectItems included. saved these to the ProjectemplatesCache folder and as a zip in the ProjectTemplates folder. restarted VS2010 and checked the new project location which should have shown my new template. specifically, the folders I saved to were.. C:\program files\Microsoft Visual Studio 10.0\Common7\IDE\ProjectTemplatesCache\CSharp\Windows\1033\HostComm.zip (the zip is the folder name, not a zip file) and C:\program files\Microsoft Visual Studio 10.0\Common7\IDE\ProjectTemplates\CSharp\Windows\1033 (this folder has a HostComm.zip file in it) Has anyone else done this? Can it be done? If it can then what did I miss?

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• Why is LOGON_USER Server Variable is blank on New Windows / New Tab?

  - by Alex Papadimoulis

  We are noticing some very strange behavior on an installation of a .NET2-based webapp on Server 2008. Our app uses "old school" Integrated Windows Authentication and simply reads the LOGIN_USER server variable from the request collection. There's a good reason for this, but that's somewhat irrelevant to the question, since the underlying WindowsAuthentication code from ASP.NET does the same thing. Anyway... When you enter the URL in the browser, it loads up just fine and displays the username (from LOGIN_USER) no problem. When you click on a link within the web app, it loads the page just fine and authenticates without any problems. When you "hard refresh" (Ctrl-F5) it also works just fine. However, when you click "open in a new window" or "open in a new tab", the LOGON_USER variable is blank Any ideas? Am I missing some IIS7 setting somewhere? Tested clients are Windows 7 with IE8 or Windows XP with IE6.

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• how to group by over anonymous type with vb.net linq to object

  - by smoothdeveloper

  I'm trying to write a linq to object query in vb.net, here is the c# version of what I'm trying to achieve (I'm running this in linqpad): void Main() { var items = GetArray( new {a="a",b="a",c=1} , new {a="a",b="a",c=2} , new {a="a",b="b",c=1} ); ( from i in items group i by new {i.a, i.b} into g let p = new{ k = g, v = g.Sum((i)=>i.c)} where p.v > 1 select p ).Dump(); } // because vb.net doesn't support anonymous type array initializer, it will ease the translation T[] GetArray<T>(params T[] values){ return values; } I'm having hard time with either the group by syntax which is not the same (vb require 'identifier = expression' at some places, as well as with the summing functor with 'expression required' ) Thanks so much for your help!

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• Usng Rails ActiveRecord relationships

  - by Brian Goff

  I'm a newbie programmer, been doing shell scripting for years but have recently taken on OOP programming using Ruby and am creating a Rails application. I'm having a hard time getting my head wrapped around how to use my defined model relationships. I've tried searching Google, but all I can come up with are basically cheat sheets for what has_many, belongs_to, etc all mean. This stuff is easy to define & understand, especially since I've done a lot of work directly with SQL. What I don't understand is how to actually used those defined relationships. In my case I have 3 models: Locations Hosts Services Relationships (not actual code, just for shortening it): Services belongs_to :hosts Hosts has_many :services belongs_to :locations Locations has_many :hosts In this case I want to be able to display a column from Locations while working with Services. In SQL this is a simple join, but I want to do it the Rails/Ruby way, and also not use SQL in my code or redefine my joins.

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• How to read XML from the internet using a Web Proxy?

  - by Mark Allison

  This is a follow-up to this question: How to load XML into a DataTable? I want to read an XML file on the internet into a DataTable. The XML file is here: http://rates.fxcm.com/RatesXML If I do: public DataTable GetCurrentFxPrices(string url) { WebProxy wp = new WebProxy("http://mywebproxy:8080", true); wp.Credentials = CredentialCache.DefaultCredentials; WebClient wc = new WebClient(); wc.Proxy = wp; MemoryStream ms = new MemoryStream(wc.DownloadData(url)); DataSet ds = new DataSet("fxPrices"); ds.ReadXml(ms); DataTable dt = ds.Tables["Rate"]; return dt; } It works fine. I'm struggling with how to use the default proxy set in Internet Explorer. I don't want to hard-code the proxy. I also want the code to work if no proxy is specified in Internet Explorer.

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• clicking the debug button in Eclipse will not start debug mode

  - by iHorse

  i am running Eclipse 3.5.0 on a MacBook Pro using the Android SDK. i noticed that on this particular project i am working on i cant seem to actually enter debug mode. i click the little green bug icon in the tool bar and the app starts and runs. but if i switch over to the Debug Perspective i see no indication that it is running in debug mode. furthermore i can not hit any brake points that i have set. this makes debugging code a bit hard. Other projects that i am working on don't have this issue. any ideas on what i need to change in the project to get this to work?

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• Integrate Jasper in Rails 3

  - by AndreDurao

  I'm trying to integrate a rails 3 app with jasper following this wiki: http://wiki.rubyonrails.org/rails/pages/HowtoIntegrateJasperReports But it seems that a lot of information isn't updated so it's been very hard to make it work by myself. I've also read a topic at ruby-forum: http://www.ruby-forum.com/topic/139453 with some details explained but still couldn't make it work. My first problem is related with the render_to_string method: When the controller method runs I receive a "Template is missing" error: this is the method: def report @customers = Customer.all send_doc(render_to_string(:template => report_customers_path, :layout => false), '/pdfs', 'report.jasper', "customers", 'pdf') end Although this seems simple I'm not understanding why is this happening. Doesn't render_to_string with layout = false suposed to get me the string result of that action? I also tried :action instead of :template, but it does the same. If anybody with some expertise with this integration could help... Thanks in advance, André

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• C++0x and the Lack of Polymorphic Lambdas - Why?

  - by Dominar

  I've been reviewing the draft version of the upcoming C++0x standard. Specifically the section on lambdas, and am confused as to the reasoning for not introducing polymorphic lambdas. I had hoped we could use code such as the following: template<typename Container> void foo(Container c) { for_each(c.begin(),c.end(),[](T& t) { ++t; }); } What were the reasons: Was it the committee ran out of time? That polymorphic lambdas are too hard to implement? Or perhaps that they are seen as not being needed by the PTB?

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• Hibernates generates VARBINARY column with JPA @Enumerated annotation

  - by tran

  Hibernates is generating a VARBINARY column with JPA @Enumerated annotation. I'm using SQL Server 2005 w/ JTDS driver. The mapping is dirt simple: @Basic @Enumerated(EnumType.ORDINAL) private MyEnum foo; I would have expected Hibernate to generate an integer column? I've also tried EnumType.STRING (expecting a varchar column) with no success. Note that my app works fine; the column type makes it hard to inspect the DB, and to issue adhoc SQL when poking at the database.

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• Using CSS Classes for individual effects - opinions?

  - by Cool Hand Luke UK

  Hey, Just trying to canvas some opinions here. I was wondering how people go about adding individual effects to html elements. Take this example: you have three types of h1 titles all the same size but some are black some are gold and some are white. Some have a text-shadow etc. Would you create separate CSS classes and add them do the h1 tag or would you create a new single class for each different h1 title type (with grouped CSS elements)? With singular class for each effect you can build up combos of classes in html class="gold shadow" but also how would you name them. For example its bad practice to give classes and id names associated to colours, because it doesn't define what it does well. However is this ok with textual CSS classes? Just wondering what others do, I know there are no hard and fast rules. Cheers.

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• Django: Country drop down list?

  - by User

  I have a form for address information. One of the fields is for the address country. Currently this is just a textbox. I would like a drop down list (of ISO 3166 countries) for this. I'm a django newbie so I haven't even used a Django Select widget yet. What is a good way to do this? Hard-code the choices in a file somewhere? Put them in the database? In the template?

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• a missing variable in a switch statement ?!!

  - by mechhfly

  hi folks, i have a strange issue. a variable seems to be missing during a pass through a case statement i have a function like so function checklink($var0, $var1, $var2) { switch($var0) { case "case1": print $var2; //code uses $var2 successfully case "case2": print $var2; //variable has disappeared! } } essentially what i am doing is constructing a string from the last variable based on the first. if i run the code in which the first case is true, i get the expected results, but when i run the second case, my variable seems to have vanished. these first two case statements are syntactically the same and the variable is gathered from the $_GET array (hard coded into hyperlink). any light on this issue? if more explanation is needed let me know, its late and my brain is getting mushy. thanks my friends.

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• Where to place unit test project

  - by Karsten

  I'm thinking about where to put the unit/integration test project. I follow the 1 test project pr. project convention I can think of 3 ways, that all seems good to me, which make it kind of hard to choose :-) Test project is put under a Tests sub folder to the project it tests. Test project is put next to the project it tests, in a "project".Tests folder. I believe this is what Roy Osherove recommends. Put all test projects in a sub folder in the root. e.g. \Tests\"project".Tests Something else? What you choose and why?

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• Handler invocation speed: Objective-C vs virtual functions

  - by Kerido

  I heard that calling a handler (delegate, etc.) in Objective-C can be even faster than calling a virtual function in C++. Is it really correct? If so, how can that be? AFAIK, virtual functions are not that slow to call. At least, this is my understanding of what happens when a virtual function is called: Compute the index of the function pointer location in vtbl. Obtain the pointer to vtbl. Dereference the pointer and obtain the beginning of the array of function pointers. Offset (in pointer scale) the beginning of the array with the index value obtained on step 1. Issue a call instruction. Unfortunately, I don't know Objective-C so it's hard for me to compare performance. But at least, the mechanism of a virtual function call doesn't look that slow, right? How can something other than static function call be faster?

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• gcc linking shared libraries with dependent libraries

  - by Geng

  I have a complicated project with multiple executable targets and multiple shared libraries. The shared libraries currently don't have their dependent shared libraries linked in, and the result is that linker arguments to build the executables are hideously long and hard to maintain. I'd like to add in the dependencies so the Makefiles become much cleaner. I want to add the following (example): gcc -shared -o libshared.so -lshared_dependent1 -lshared_dependent2 objfile1.o objfile2.o Is there a way to test if all the symbols in libshared.so will resolve based on that line? Is there a way to print out if any of the shared_dependent libraries specified were unnecessary? Thanks in advance.

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• PyPy -- How can it possible beat CPython?

  - by Vulcan Eager

  From the Google Open Source Blog: PyPy is a reimplementation of Python in Python, using advanced techniques to try to attain better performance than CPython. Many years of hard work have finally paid off. Our speed results often beat CPython, ranging from being slightly slower, to speedups of up to 2x on real application code, to speedups of up to 10x on small benchmarks. How is this possible? Which Python implementation was used to implement PyPy? CPython? And what are the chances of a PyPyPy or PyPyPyPy beating their score? (On a related note... why would anyone try something like this?)

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• Winforms - a strange problem a with simple binding

  - by Adi Barda

  Hi Guys, It's hard for me to clearly describe my problem but I'll try. I have a UserControl1 which contains UserControl2 which contains several WinForms controls (most of them DevExpress). I do simple binding to these controls to my datatable fields. So far everything works fine. When I move the focus to a record in the table (by navigating in a grid rows for example) the binding works great, the concurrenmcy manager moves the cursor and everything reflects right in the bounded controls. The problem starts when I add new user UserControl3 above UserControl2 and make UserControl2.Visible = false. Now UserControl3 is shown and UserControl2 exists but not shown. Now when I set UserControl2.Visible = true to show it again the simple binding stops working! I navigate in the grid but either the ConcurrencyManager stops working or the simple binding becomes disconnected. My question: Are there any known issues/ best practices with the binding & concurrency manager? Thanks a lot, Adi Barda

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