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How to detect if my shell script is running through a pipe?
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In a pure POSIX shell,
if [ -t 1 ] ; then echo terminal; else echo "not a terminal"; fi
returns "terminal", because the output is sent to your terminal, whereas
(if [ -t 1 ] ; then echo terminal; else echo "not a terminal"; fi) | cat
returns "not a t...
How to append a char to a std::string?
The following fails with the error prog.cpp:5:13: error: invalid conversion from ‘char’ to ‘const char*’
13 Answer...
UITableView is starting with an offset in iOS 7
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81
By default table view controllers will pad the content down under the nav bar so you could scrol...
Foreign Key to multiple tables
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154
You have a few options, all varying in "correctness" and ease of use. As always, the right des...
Fastest way to convert string to integer in PHP
Using PHP, what's the fastest way to convert a string like this: "123" to an integer?
8 Answers
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Postgres manually alter sequence
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The parentheses are misplaced:
SELECT setval('payments_id_seq', 21, true); # next value will be 22
Otherwise you're calling setval with a single argument, while it requires two or three.
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How to set 'auto' for upper limit, but keep a fixed lower limit with matplotlib.pyplot
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109
You can pass just left or right to set_xlim:
plt.gca().set_xlim(left=0)
For the y axis, use...
What is the meaning of git reset --hard origin/master?
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answered Mar 15 '13 at 12:17
CB BaileyCB Bailey
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Is onload equal to readyState==4 in XMLHttpRequest?
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edited Feb 7 '12 at 18:44
answered Feb 7 '12 at 18:11
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Why doesn't print work in a lambda?
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188
A lambda's body has to be a single expression. In Python 2.x, print is a statement. However, i...