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Difference between this and self in JavaScript
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For completeness, self is useful in context of WebWorker when window is not accessible (developer.mozilla.org/en-US/docs/Web/Guide/Performance/…). Using self instead of window lets you access the global object in a portable way...
Should Gemfile.lock be included in .gitignore?
...te all the gem dependencies each time you deploy, etc.
From cowboycoded's comment below:
If you are working on a gem, then DO NOT check in your Gemfile.lock. If you are working on a Rails app, then DO check in your Gemfile.lock.
Here's a nice article explaining what the lock file is.
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How to properly use unit-testing's assertRaises() with NoneType objects? [duplicate]
...an. I advise to do the same because there is a lot more than what unittest come with in python2.6 <.
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Calculate the date yesterday in JavaScript
...'t verify "all" browsers but worked in all I tested camo.githubusercontent.com/…
– James Kyburz
Mar 24 '14 at 20:57
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Best way to extract a subvector from a vector?
... make sense to use the big-O notation where N is a specific number. Big-O communicates the rate of growth with respect to how N changes. Johann: It's best not to use one variable name in two ways. We'd normally say either O(Y-X), or we'd say O(Z) where Z=Y-X.
– Mooing Duck
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Catching multiple exception types in one catch block
....exceptions.php#example-287
RFC: https://wiki.php.net/rfc/multiple-catch
Commit: https://github.com/php/php-src/commit/0aed2cc2a440e7be17552cc669d71fdd24d1204a
For PHP before 7.1:
Despite what these other answers say, you can catch AError and BError in the same block (it is somewhat easier if ...
Android TextWatcher.afterTextChanged vs TextWatcher.onTextChanged
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Change x axes scale in matplotlib
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How to count certain elements in array?
...s most elegant. E.g. for me, making a function call per element to just to compare it to a value is not elegant.
– Felix Kling
May 25 '11 at 8:33
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How to write binary data to stdout in python 3?
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