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What is the difference between .*? and .* regular expressions?
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It is the difference between greedy and non-greedy quantifiers.
Consider the input 101000000000100.
Using 1.*1, * is greedy - it will match all the way to the end, and then backtrack until it can match 1, leaving you with 1010000000001.
.*? is non-greedy. * w...
Generate unique random numbers between 1 and 100
How can I generate some unique random numbers between 1 and 100 using JavaScript?
29 Answers
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Random date in C#
I'm looking for some succinct, modern C# code to generate a random date between Jan 1 1995 and the current date.
7 Answers
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what is the difference between ?:, ?! and ?= in regex?
I searched for the meaning of these expressions but couldn't understand the exact difference between them.
This is what they say:
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How do I choose grid and block dimensions for CUDA kernels?
This is a question about how to determine the CUDA grid, block and thread sizes. This is an additional question to the one posted here .
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What is the difference between join and merge in Pandas?
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I always use join on indices:
import pandas as pd
left = pd.DataFrame({'key': ['foo', 'bar'], 'val': [1, 2]}).set_index('key')
right = pd.DataFrame({'key': ['foo', 'bar'], 'val': [4, 5]}).set_index('key')
left.join(right, lsuffix='_l', rsuffix='_r')
val_l ...
nginx showing blank PHP pages
..._errors in php.ini but no luck. php5-fpm.log is not producing any errors and neither is nginx.
17 Answers
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Code Golf: Collatz Conjecture
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x86 assembly, 1337 characters
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; To assemble and link this program, just run:
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; >> $ nasm -f elf collatz.asm && gcc -o collatz collatz.o
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; You can then enjoy its output by passing a number to it on the command line:
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; >> $ ./collatz 123
; >&...
Javascript array search and remove string?
... = ['A', 'B', 'C', 'B'];
t.splice(t.indexOf('B'), 1); // will return ['B'] and t is now equal to ['A', 'C', 'B']
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Does .NET provide an easy way convert bytes to KB, MB, GB, etc.?
...lPlaces + "} {1}",
adjustedSize,
SizeSuffixes[mag]);
}
And here's the original implementation I suggested, which may be marginally slower, but a bit easier to follow:
static readonly string[] SizeSuffixes =
{ "bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", ...