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How do I test for an empty JavaScript object?
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Change from SQLite to PostgreSQL in a fresh Rails project
... do not apply, you can leave them out, or in with no values. This was just more of a 'catch all' type of configuration.
– Chris Barretto
Mar 5 '13 at 16:58
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PHP 5.4 Call-time pass-by-reference - Easy fix available?
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More accurate regex I'm using for this purpose: (?<!function)[:> ][a-zA-Z0-9_]+(?<!foreach|array)\s?\([^()]*&\$
– Mojo
Apr 4 '17 at 6:45
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How to find index of all occurrences of element in array?
...TE: As per VisioN's comment, a simple for loop would get the same job done more efficiently, and it is easier to understand and therefore easier to maintain:
function getAllIndexes(arr, val) {
var indexes = [], i;
for(i = 0; i < arr.length; i++)
if (arr[i] === val)
ind...
Convert Int to String in Swift
... interpolation when String has a constructor that accepts an Int. Its much more clear and concise.
– Isuru
Sep 15 '14 at 6:30
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String to LocalDate
... submitted an edit for the format "yyyy-MMM-dd". YYYY is year of era, and (more egregiously) DD is day of year.
– Spencer Kormos
Jan 5 '12 at 16:55
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Is it possible to decrypt MD5 hashes?
...mber of possible inputs to a given hash function (and most of them contain more than 128 bits, or a measly 16 bytes). So there are actually an infinite number of possibilities for data that would hash to the same value. The thing that makes hashes interesting is that it is incredibly difficult to fi...
How do you round a float to two decimal places in jruby
...es anyway. sprintf can format any number almost any way you like, and lots more.
Full sprintf documentation: http://www.ruby-doc.org/core-2.0.0/Kernel.html#method-i-sprintf
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Abort makefile if variable not set
...rror MY_FLAG is not set)
endif
Note that the lines must not be indented. More precisely, no tabs must precede these lines.
Generic solution
In case you're going to test many variables, it's worth defining an auxiliary function for that:
# Check that given variables are set and all have non-em...
One-liner to check whether an iterator yields at least one element?
...ver, it would help to know what the OP is trying to do? There's probably a more elegant solution (this IS Python, after all).
– rossipedia
Jun 24 '10 at 22:59
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