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How to check for a valid Base64 encoded string
... // Base64 string's length is always divisible by four, i.e. 8, 16, 20 etc.
// If it is not you can return false. Quite effective
// Further, if it meets the above criterias, then test for spaces.
// If it contains spaces, it is not base64
if (value == null || va...
Which is better, return “ModelAndView” or “String” on spring3 controller
...re any difference in the way Spring process it like prepending contextpath etc..
– Keerthivasan
Aug 2 '14 at 16:48
ple...
Integrated Markdown WYSIWYG text editor
...shed in a gist somewhere as well? Stable version list of the dependencies, etc.? Thanks!
– Jameson
Mar 21 '17 at 4:33
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pull/push from multiple remote locations
...he git remote command:
git remote add alt alt-machine:/path/to/repo
To fetch from all the configured remotes and update tracking branches, but not merge into HEAD, do:
git remote update
If it's not currently connected to one of the remotes, it will take time out or throw an error, and go on to...
Generating random numbers in Objective-C
...es from 0.0 to 0.5 to 0, but values from 0.5 to 1.5 will be converted to 1 etc. So the numbers 0 and 47 will come up only half as often as all the other numbers.
– gnasher729
Feb 28 '14 at 23:42
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C++ code file extension? .cc vs .cpp [closed]
...variations by system and by toolchain (including your favorite make rules etc) which will have an impact on the decision. For instance, the default recursive multi-target build system some of in the QNX 6 series of development platforms don't pick up *.cpp files as C++ language sources; it wantss ....
Determine if code is running as part of a unit test
...ialogs (MessageBox, File dialogs, Color picker, database connection dialog etc). Classes that need to display message boxes accept ICommonDiaglogs as a constructor parameter that we can then mock in the unit test. Bonus: You can assert on expected MessageBox calls.
– Tony O'Hag...
Check for null in foreach loop
...calls, unnecessary GetEnumerator(), MoveNext(), Dispose() on the iterator, etc).
An if test is simple, obvious, and efficient.
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Function in JavaScript that can be called only once
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Reusable invalidate function which works with setInterval etc,.: jsbin.com/vicipar/1/edit?js,console
– Q20
Apr 27 '17 at 23:41
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Python unit test with base and sub class
...g methods, doesn't alter the MRO and allows me to define setUp, setUpClass etc. in the base class.
– Hannes
May 27 '15 at 22:18
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