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Two color borders

...r. Beware, tho', it can interact in a wonky fashion with margins, paddings and drop-shadows. In some browsers you might have to use a browser-specific prefix as well; in order to make sure it picks up on it: -webkit-outline and the like (although WebKit in particular doesn't require this). This can...
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Focusable EditText inside ListView

I've spent about 6 hours on this so far, and been hitting nothing but roadblocks. The general premise is that there is some row in a ListView (whether it's generated by the adapter, or added as a header view) that contains an EditText widget and a Button . All I want to do is be able to use t...
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Case-Insensitive List Search

...in the list. Therefore, I need to do a case-insensitive search of the list and make it efficient. I can't use Contains because that doesn't take into account the casing. I also don't want to use ToUpper/ToLower for performance reasons. I came across this method, which works: ...
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Rails: fields_for with index?

...uestion do |fq| %> # here you have both the 'question' object and the current 'index' <% end %> <% end %> From: http://railsapi.com/doc/rails-v3.0.4/classes/ActionView/Helpers/FormHelper.html#M006456 It’s also possible to specify the instance to be used: <%= fo...
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Regex to Match Symbols: !$%^&*()_+|~-=`{}[]:";'?,./

... /[$-/:-?{-~!"^_`\[\]]/ There are three ranges. '$' to '/', ':' to '?', and '{' to '~'. the last string of characters can't be represented more simply with a range: !"^_`[]. Use an ACSII table to find ranges for character classes. ...
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How do I parse XML in Python?

I have many rows in a database that contains XML and I'm trying to write a Python script to count instances of a particular node attribute. ...
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What exactly is Python multiprocessing Module's .join() Method Doing?

Learning about Python Multiprocessing (from a PMOTW article ) and would love some clarification on what exactly the join() method is doing. ...
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Why do 64-bit DLLs go to System32 and 32-bit DLLs to SysWoW64 on 64-bit Windows?

... does the magic of hiding the real System32 directory for 32-bit processes and showing SysWOW64 under the name of System32." Edit: If you're talking about an installer, you really should not hard-code the path to the system folder. Instead, let Windows take care of it for you based on whether or no...
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git add only modified changes and ignore untracked files

I ran "git status" and listed below are some files that were modified/or under the heading "changes not staged for commit". It also listed some untracked files that I want to ignore (I have a ".gitignore" file in these directories). ...
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How to use shared memory with Linux in C

... There are two approaches: shmget and mmap. I'll talk about mmap, since it's more modern and flexible, but you can take a look at man shmget (or this tutorial) if you'd rather use the old-style tools. The mmap() function can be used to allocate memory buffer...