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Correctly determine if date string is a valid date in that format
...aken from this answer. Also on php.net. Originally written by Glavić.]
Test cases:
var_dump(validateDate('2013-13-01')); // false
var_dump(validateDate('20132-13-01')); // false
var_dump(validateDate('2013-11-32')); // false
var_dump(validateDate('2012-2-25')); // false
var_dump(validateDat...
MongoDB: How to update multiple documents with a single command?
...ment to update(), where the the third argument is the upsert argument:
db.test.update({foo: "bar"}, {$set: {test: "success!"}}, false, true);
For versions of mongodb 2.2+ you need to set option multi true to update multiple documents at once.
db.test.update({foo: "bar"}, {$set: {test: "success!"...
How to convert int to char with leading zeros?
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Just tested FORMAT Sql Server 2012 - it is slow, as in "one number per several seconds" slow. Stay away.
– Muposat
Dec 9 '15 at 19:41
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What is the purpose of Verifiable() in Moq?
...ct that achieving those goals has on the legibility and maintainability of tests which lean too much on such constructs"
ORIGINAL: Note that where possible, one should instead follow the AAA layout and hence one should be doing explicit mock.Verify( expression ) calls after the work has been done, ...
Why does typeof NaN return 'number'?
... or
greater than +1.
All these values may not be the same. A simple test for a NaN is to test value == value is false.
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What's the best way to detect a 'touch screen' device using JavaScript?
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Modernizr does not test for touch screens. It tests for the existence of touch events in the browser. See the "Misc Tests" section in the docs: modernizr.com/docs/#features-misc
– Harry Love
Jan 24 '12 at ...
How do I read CSV data into a record array in NumPy?
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I tested code similar to this with a csv file containing 2.6 million rows and 8 columns. numpy.recfromcsv() took about 45 seconds, np.asarray(list(csv.reader())) took about 7 seconds, and pandas.read_csv() took about 2 seconds ...
Find an element in a list of tuples
...e is 2: you can convert your list into a single dictionary.
For example,
test = [("hi", 1), ("there", 2)]
test = dict(test)
print test["hi"] # prints 1
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Run an app on a multiple devices automatically in Android Studio
... What version of the ide are you running? If you're not running the latest you should update.
– damccull
Feb 18 '14 at 16:44
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Count immediate child div elements using jQuery
...$('#foo').children().size() for better performance.
I've created a jsperf test to see the speed difference and the children() method beaten the child selector (#foo > div) approach by at least 60% in Chrome (canary build v15) 20-30% in Firefox (v4).
By the way, needless to say, these two approa...