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Haskell function composition (.) and function application ($) idioms: correct use
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I guess I can answer this from authority.
Is there a reason for using the books way that is much better than using all ($) symbols?
There's no special reason. Bryan and I both prefer to reduce line noise. . is quieter than $. As a result, the bo...
How can I declare and use Boolean variables in a shell script?
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if $the_world_is_flat ; then
echo 'Be careful not to fall off!'
fi
From: Using boolean variables in Bash
The reason the original answer is included here is because the comments before the revision on Feb 12, 2014 pertain only to the original answer, and many of the comments are wrong when a...
Detecting WPF Validation Errors
...Window. Alternatively, you could just call it directly with IsValid(this) from the Window class.
– akousmata
Jun 18 '15 at 14:28
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show 1 m...
javax.xml.bind.UnmarshalException: unexpected element (uri:“”, local:“Group”)
Meet an exception when unmarshalling from xml
14 Answers
14
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“Cannot connect to iTunes Store” in-app purchases
... not setting up a Sandbox User, I forgot that step. And don't log into it from the Settings >> iTunes section of the device b/c that will break it. Wait and do it during the actual testing.
– Nathan Prather
Jul 22 '16 at 3:12
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Tracking the script execution time in PHP
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Should the value at the end be subtracted from the value at the start of the script? I'm getting some really weird numbers if I don't. Like a page that took 0.05 seconds to generate is saying it took 6s of CPU time...is this correct? See here: blog.rompe.org/node/85
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Split string every nth character?
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There is already an inbuilt function in python for this.
>>> from textwrap import wrap
>>> s = '1234567890'
>>> wrap(s, 2)
['12', '34', '56', '78', '90']
This is what the docstring for wrap says:
>>> help(wrap)
'''
Help on function wrap in module textwrap:...
How to source virtualenv activate in a Bash script
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You deactivate from the subshell with exit or Ctrl+d
– Alexx Roche
Apr 10 at 12:46
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Iterating over dictionaries using 'for' loops
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@yugr From Python 3.7, dictionaries are insertion-ordered and this is a language feature. See stackoverflow.com/a/39980744/9428564
– Aimery
Sep 9 '19 at 14:54
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How to get the first element of the List or Set? [duplicate]
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useful if you just want to get anything from the set, as quickly as possible
– HaydenKai
Sep 13 '16 at 23:10
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