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How do I use shell variables in an awk script?
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awk '{print a,b,$0}' a="$var1" b="$var2" file
In this way we can also set different Field Separator FS for each file.
awk 'some code' FS=',' file1.txt FS=';' file2.ext
Variable after the code block will not work for the BEGIN block:
echo "input data" | awk 'BEGIN {print var}' var="${varia...
How do I select child elements of any depth using XPath?
... editor after snippets, if snippets enabled
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JavaScript regex multiline flag doesn't work
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You might add that the /s" modifier sets singleline mode as opposed to multiline mode. +1
– Cerebrus
Jul 1 '09 at 10:02
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JQuery: How to call RESIZE event only once it's FINISHED resizing?
...an example using thejh's instructions
You can store a reference id to any setInterval or setTimeout. Like this:
var loop = setInterval(func, 30);
// some time later clear the interval
clearInterval(loop);
share
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[since C++11] std::array的使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
[since C++11] std::array的使用learning-using-cpp11-stl-array 前言本文总结了STL中的序列式容器array的用法及注意事项。array的出现代表着C++的代码更进一步现代化，就像std::string的出现代替了c风格字符串并且能和STL配合工作一样，array的 #...
Can I redirect the stdout in python into some sort of string buffer?
... using TextIOWrapper:
import sys
from io import TextIOWrapper, BytesIO
# setup the environment
old_stdout = sys.stdout
sys.stdout = TextIOWrapper(BytesIO(), sys.stdout.encoding)
# do something that writes to stdout or stdout.buffer
# get output
sys.stdout.seek(0) # jump to the start
out = s...
Programmer Puzzle: Encoding a chess board state throughout a game
.... Chess occurs on an 8x8 board with each player starting with an identical set of 16 pieces consisting of 8 pawns, 2 rooks, 2 knights, 2 bishops, 1 queen and 1 king as illustrated here:
Positions are generally recorded as a letter for the column followed by the number for the row so White’s que...
How does tuple comparison work in Python?
...nkai -- yes. try: x = tuple([0 for _ in range(n)]) and do the same for y. Setting n=100, 1000, 10,000, and 100,000 and running %timeit x==y gave timing values of .5, 4.6, 43.9, and 443 microseconds respectively, which is about as close to O(n) as you can practically get.
– Mi...
List of zeros in python [duplicate]
How can I create a list which contains only zeros? I want to be able to create a zeros list for each int in range(10)
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Angularjs if-then-else construction in expression
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This is still a great answer since it works inside the settings of angular-ui components (while ternary operator does not work there on some reason). Maybe this helps someone struggling to set angular-ui parameters
– Olga Gnatenko
Jul 25 '14...