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Java logical operator short-circuiting
...ator & and will throw a NullPointerException if input is null, but the 1st version will return false without an exception.
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Windows batch: call more than one command in a FOR loop?
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117
FOR /r %%X IN (*) DO (ECHO %%X & DEL %%X)
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CSS table column autowidth
...(The last column should autosize-width to the content. Suppose i have only 1 li element it should shrink vs. having 3 li elements etc):
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c# open file with default application and parameters
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Joachim Sauer
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answered Jul 6 '12 at 16:25
daniloquiodaniloquio
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What does upstream mean in nginx?
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165
It's used for proxying requests to other servers.
An example from http://wiki.nginx.org/LoadB...
PostgreSQL delete with inner join
i am getting the following error PostgreSQL 8.2.11
5 Answers
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Python, remove all non-alphabet chars from string
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123
Use re.sub
import re
regex = re.compile('[^a-zA-Z]')
#First parameter is the replacement, se...
In practice, what are the main uses for the new “yield from” syntax in Python 3.3?
...rapper(reader())
for i in wrap:
print(i)
# Result
<< 0
<< 1
<< 2
<< 3
Instead of manually iterating over reader(), we can just yield from it.
def reader_wrapper(g):
yield from g
That works, and we eliminated one line of code. And probably the intent is a little ...
com.jcraft.jsch.JSchException: UnknownHostKey
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