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Best way to merge two maps and sum the values of same key?
...ator, so you get the sum of values for each duplicate key.
Edit: A little more detail, as per user482745's request.
Mathematically a semigroup is just a set of values, together with an operator that takes two values from that set, and produces another value from that set. So integers under additi...
Using logging in multiple modules
...isting_loggers=False if you're using Python 2.6 or later (see the docs for more information). The default value is True for backward compatibility, which causes all existing loggers to be disabled by fileConfig() unless they or their ancestor are explicitly named in the configuration. With the value...
Copying PostgreSQL database to another server
...s to copy from local to remote and the second one is from remote to local. More -> https://www.postgresql.org/docs/9.6/app-pgdump.html
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Is there a way to run Bash scripts on Windows? [closed]
...nother option is MinGW's MSYS which includes bash and a smaller set of the more important utilities such as awk. Personally I would have preferred Cygwin because it includes such heavy lifting tools as Perl and Python which I find I cannot live without, while MSYS skimps on these and assumes you are...
How to fix Error: laravel.log could not be opened?
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@RameshPareek You're right but I just wanted to be more clear ;)
– Hamid Parchami
Jan 21 '18 at 21:42
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What is the easiest/best/most correct way to iterate through the characters of a string in Java?
...ngth(), that is hoist the method behind that call up a few frames, but its more efficient to do this for(int i = 0, n = s.length() ; i < n ; i++) { char c = s.charAt(i); }
– Dave Cheney
Oct 13 '08 at 8:04
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Find and Replace Inside a Text File from a Bash Command
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Build a Basic Python Iterator
...increment. This method raises a StopIteration exception when there are no more value to return, which is implicitly captured by looping constructs to stop iterating.
Here's a simple example of a counter:
class Counter:
def __init__(self, low, high):
self.current = low - 1
sel...
Code block in numbered list (Wiki syntax)
...syntax, it works for me on 1.17
# one
#:<pre>
#::some stuff
#::some more stuff</pre>
# two
It is not perfect, because you end up with a more indent but it does allow one to use the wiki syntax for correctly formatted pre blocks over multiple lines.
As previously mentioned, the other ...
Check if object is a jQuery object
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