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php - get numeric index of associative array
... 'blue' => 'nice',
'car' => 'fast',
'number' => 'none'
);
var_dump(array_search('car', array_keys($a)));
var_dump(array_search('blue', array_keys($a)));
var_dump(array_search('number', array_keys($a)));
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Is it Pythonic to use list comprehensions for just side effects?
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It is very anti-Pythonic to do so, and any seasoned Pythonista will give you hell over it. The intermediate list is thrown away after it is created, and it could potentially be very, very large, and therefore expensive to create.
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indexOf method in an object array?
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I think you can solve it in one line using the map function:
pos = myArray.map(function(e) { return e.hello; }).indexOf('stevie');
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How do I create directory if none exists using File class in Ruby?
...ts (it just does nothing) so this solution can be compressed into this can one-liner plus a require statement: FileUtils.mkdir_p(File.dirname(some_path))
– Eureka
Sep 27 '12 at 10:43
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xcodebuild says does not contain scheme
...em appear while setting up my own projects!
For posterity, or at least anyone getting here from a search, here are two versions of things -- the "I'm busy, so just the facts please" version and a more involved discussion and rationale. Both of these versions assume you are trying to build from a W...
How do I find out my python path using python?
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You would probably also want this:
import sys
print(sys.path)
Or as a one liner from the terminal:
python -c "import sys; print('\n'.join(sys.path))"
Caveat: If you have multiple versions of Python installed you should use a corresponding command python2 or python3.
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findViewByID returns null
... Such an easy mistake tot make but unfortunately this is what I had done. The debugger is no use since it said the error was at my new intent line not in the actual new activity I was calling. Thanks!
– edude05
Apr 13 '12 at 1:23
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In C#, how to instantiate a passed generic type inside a method?
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The first one will assign null rather than create an instance for reference types.
– Joel Coehoorn
Mar 18 '09 at 16:27
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Echo tab characters in bash script
How do I echo one or more tab characters using a bash script?
When I run this code
10 Answers
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Delete everything in a MongoDB database
...-1) db[c].drop(); })
This code will go through all collection names from one database and drop those which do not start with "system.".
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