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How do I remove code duplication between similar const and non-const member functions?
...using const_cast instead of static_cast to add const since it prevents you from changing the type accidentally.
– Greg Rogers
Nov 23 '08 at 7:49
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Rails “validates_uniqueness_of” Case Sensitivity
...t for the new record and fail with a ugly server exception that comes back from the SQL adapter. If you do not have a database constraint, the insert will succeed and you now have two rows with 'foo' as the name.
See also "Concurrency and integrity" in the validates_uniqueness_of Rails documentat...
How to navigate back to the last cursor position in Visual Studio?
... examples of things done right. In some ways, VS learned a few good things from emacs with shortcuts that are a sequence of two letters, but ultimately screwed up on other parts with the choice of non-alphanumeric bindings, combined with a broken low-level keyboard handling.
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Why do we need tuples in Python (or any immutable data type)?
... -- we were able to shave off over an hour of data processing by switching from lists to tuples.
– Mark Ribau
Jul 1 '13 at 20:34
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show 7 mo...
What is process.env.PORT in Node.js?
...set('port', ...), and that makes your server be able to accept a parameter from the environment what port to listen on.
If you pass 3000 hard-coded to app.listen(), you're always listening on port 3000, which might be just for you, or not, depending on your requirements and the requirements of the ...
Extracting substrings in Go
I'm trying to read an entire line from the console (including whitespace), then process it. Using bufio.ReadString, the newline character is read together with the input, so I came up with the following code to trim the newline character:
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Visual Studio 2010 - C++ project - remove *.sdf file
...u can safely delete the .sdf file and ipch folder but you can also stop VS from putting those files in the project folder in the first place. (Useful if you have your source in an SVN or other synchronised folder, or if you store your project on a small volume like a USB stick or SSD and you don't w...
How do I convert datetime to ISO 8601 in PHP
How do I convert my time from 2010-12-30 23:21:46 to ISO 8601 date format? (-_-;)
6 Answers
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Android: How to handle right to left swipe gestures
I want my app to recognize when a user swipes from right to left on the phone screen.
21 Answers
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Async call with await in HttpClient never returns
I have a call I am making from inside a xaml-based, C# metro application on the Win8 CP; this call simply hits a web service and returns JSON data.
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