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How to count certain elements in array?
...t later will have to spend some time to check what it does, and lose focus from their task. An abstraction is far superior: const count = countItems(array, 2); and the implementation details can be argued inside.
– joeytwiddle
Jul 14 '16 at 5:37
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Sort a Map by values
...sistent with equals (see the sortMap javadox). This means retireving items from the tree map will not work. sorted_map.get("A") will return null. That means this use of treemap is broken.
– mR_fr0g
Dec 1 '10 at 14:36
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Why does Popen.communicate() return b'hi\n' instead of 'hi'?
...of the bytes you have. If you know the encoding of the bytes you received from the subprocess, you can use decode() to convert them into a printable str:
>>> print(b'hi\n'.decode('ascii'))
hi
Of course, this specific example only works if you actually are receiving ASCII from the subpro...
How to fix “ImportError: No module named …” error in Python?
...s; this is done to prevent directories with a common name, such as string, from unintentionally hiding valid modules that occur later on the module search path. In the simplest case, init.py can just be an empty file
– panofish
Jan 14 '16 at 21:13
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Spring MVC - How to get all request params in a map in Spring controller?
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If you are looking to process list values, like from a group of checkboxes with the same name, use: @RequestParam MultiValueMap<String, String>
– IcedDante
Jan 5 '15 at 17:11
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How can I stop a Postgres script when it encounters an error?
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I think the solution to add following to .psqlrc is far from perfection
\set ON_ERROR_STOP on
there exists much more simple and convenient way - use psql with parameter:
psql -v ON_ERROR_STOP=1
better to use also -X parameter turning off .psqlrc file usage.
Works perfectly f...
Using Python 3 in virtualenv
... after running virtualenv -p python3 my_virtual_env, python3 is accessible from outside the virtual environment also?
– Bishwas Mishra
Apr 17 '18 at 9:57
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Boost Statechart vs. Meta State Machine
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Definitely, but I learned statecharts from discrete math, not software engineering. This leaves a mark :)
– blaze
Nov 25 '10 at 13:47
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Is it safe to ignore the possibility of SHA collisions in practice?
... the above assumes that SHA-256 is a "perfect" hash function, which is far from being proven. Still, SHA-256 seems quite robust.
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Why was the switch statement designed to need a break?
...case using a goto.
It's too bad Java didn't take the opportunity to break from the C semantics.
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