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Python: fastest way to create a list of n lists
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105
The probably only way which is marginally faster than
d = [[] for x in xrange(n)]
is
from...
How to specify Composer install path?
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140
It seems that you can define the vendor dir to be something else (plugins in your case):
{
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Change one value based on another value in pandas
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186
One option is to use Python's slicing and indexing features to logically evaluate the places w...
Flatten nested dictionaries, compressing keys
...ms.append((new_key, v))
return dict(items)
>>> flatten({'a': 1, 'c': {'a': 2, 'b': {'x': 5, 'y' : 10}}, 'd': [1, 2, 3]})
{'a': 1, 'c_a': 2, 'c_b_x': 5, 'd': [1, 2, 3], 'c_b_y': 10}
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What's the difference between “groups” and “captures” in .NET regular expressions?
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127
You won't be the first who's fuzzy about it. Here's what the famous Jeffrey Friedl has to say ...
For loop example in MySQL
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145
drop table if exists foo;
create table foo
(
id int unsigned not null auto_increment primary k...
How can I split a string into segments of n characters?
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12 Answers
12
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Sequence contains more than one element
... This method will only succeed when the collections contains exactly 0 or 1 element. I believe you are looking for FirstOrDefault which will succeed no matter how many elements are in the collection.
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Can the Unix list command 'ls' output numerical chmod permissions?
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it almost can ..
ls -l | awk '{k=0;for(i=0;i<=8;i++)k+=((substr($1,i+2,1)~/[rwx]/) \
*2^(8-i));if(k)printf("%0o ",k);print}'
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