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Test if a variable is set in bash when using “set -o nounset”
...seems rather pointless in practice, unless you need to differentiate unset vs empty. I tested unset, empty and non-empty, (bash 4) and it pretty much did what’s advertised each time.
– JL Peyret
Oct 11 '19 at 1:40
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what is the difference between OLE DB and ODBC data sources?
...OLEDB goes thru ODBC.
– Hernán
Mar 27 '13 at 18:18
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@DannyVarod Ah, never mind. I missed the cr...
How to measure elapsed time in Python?
...t_timer is time.perf_counter() on all platforms. See Python - time.clock() vs. time.time() - accuracy?
See also:
Optimizing code
How to optimize for speed
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Why use the 'ref' keyword when passing an object?
...ers. So how can we better distinguish the difference between a plain param vs a ref?
– bonCodigo
Mar 18 '15 at 10:20
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Turn on IncludeExceptionDetailInFaults (either from ServiceBehaviorAttribute or from the
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Note: VS2013 puts the <serviceDebug> tag in the default Web.config with it set to false. If you don't notice like I didn't and add the XML above apparently what's in last in the file wins. Hope this is useful to someone out t...
Why are quaternions used for rotations?
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edited Aug 27 '16 at 4:24
answered Jan 19 '12 at 0:04
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Why should I use var instead of a type? [duplicate]
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That's correct. But I've tried to use var keyword in VS2010 but syntax auto completion seems to be puzzled sometimes. So maybe with ReShaper there is no drawback to use it.
– Peposh
Feb 1 '11 at 22:13
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remove None value from a list without removing the 0 value
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Iteration vs Space, usage could be an issue. In different situations profiling may show either to be "faster" and/or "less memory" intensive.
# first
>>> L = [0, 23, 234, 89, None, 0, 35, 9, ...]
>>> [x for x in L if ...
What is “git remote add …” and “git push origin master”?
...I did a blog post about this source of confusion: longair.net/blog/2011/02/27/…
– Mark Longair
Apr 11 '11 at 6:15
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List of Big-O for PHP functions
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– Kendall Hopkins
Mar 20 '10 at 15:27
If you still don't believe me, I've create a small benchmark to demonstrate the...