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Drag and drop files into WPF
I need to drop an image file into my WPF application. I currently have a event firing when I drop the files in, but I don't know how what to do next. How do I get the Image? Is the sender object the image or the control?
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UTF-8, UTF-16, and UTF-32
...nding of the encodings, I find that the Wikipedia articles are a much more approachable source.
– Adam Rosenfield
Oct 18 '13 at 16:50
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What is the difference between self-types and trait subclasses?
... self-types for DI. But somehow I am not convinced. I had created a sample app here long back (bitbucket.org/mushtaq/scala-di). Look specifically at /src/configs folder. I achieved DI to replace complex Spring configurations without self-types.
– Mushtaq Ahmed
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How do I match any character across multiple lines in a regular expression?
...lt; "$str" (-0 slurps the whole file into memory, -p prints the file after applying the script given by -e). Note that using -000pe will slurp the file and activate 'paragraph mode' where Perl uses consecutive newlines (\n\n) as the record separator.
gnu-grep - grep -Poz '(?si)abc\K.*?(?=<Foobar&...
Best practice for instantiating a new Android Fragment
I have seen two general practices to instantiate a new Fragment in an application:
13 Answers
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Can I incorporate both SignalR and a RESTful API?
I have a single page web app developed using ASP.NET. I recently converted many of the web methods to be push based, using the SignalR library. This really sped up the page considerably and reduced a lot of the server calls from the page.
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How do I hide javascript code in a webpage?
...said, I think you should focus on performance, reliability and making your app great. If you absolutely have to protect some algorithm, put it on the server, but other than that, compete on being the best at you do, not by having secrets. That's ultimately how success works on the web anyway.
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Ruby on Rails: How do I add a not null constraint to an existing column using a migration?
In my Rails (3.2) app, I have a bunch of tables in my database but I forgot to add a few not null constraints. I've googled around but I can't find how to write a migration which adds not null to an existing column.
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What are the differences between a UIView and a CALayer?
...ed before Core Animation existed, UIViews are intended to be lightweight wrappers around these CALayers.
As I describe in the similar question "When to use CALayer on the Mac/iPhone?", working directly with CALayers doesn't give you significant performance advantages over UIViews. One of the reaso...
When should assertions stay in production code? [closed]
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Actually, the worst thing that happens is when code crashes due to something that is NOT an assert. If the code will definitely crash later on with 100% probability, then the assert must absolutely be there. If you deref a pointer, then you have to implic...