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Copying the GNU screen scrollback buffer to a file (extended hardcopy)
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286
To write the entire contents of the scrollback buffer to a file, type
Ctrl + A and :
to get t...
python generator “send” function purpose?
..._inputs():
... while True:
... x = yield
... yield x * 2
...
>>> gen = double_inputs()
>>> next(gen) # run up to the first yield
>>> gen.send(10) # goes into 'x' variable
20
>>> next(gen) # run up to the next yield
>>> g...
How to get multiple counts with one SQL query?
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729
You can use a CASE statement with an aggregate function. This is basically the same thing as a ...
how to ignore namespaces with XPath
... Dirk VollmarDirk Vollmar
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How to convert decimal to hexadecimal in JavaScript
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27 Answers
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How do I print the type of a variable in Rust?
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182
If you merely wish to find out the type of a variable and are willing to do it at compile time, ...
How do I count the number of occurrences of a char in a String?
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What is the benefit of using $() instead of backticks in shell scripts?
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An example, though somewhat contrived:
deps=$(find /dir -name $(ls -1tr 201112[0-9][0-9]*.txt | tail -1l) -print)
which will give you a list of all files in the /dir directory tree which have the same name as the earliest dated text file from December 2011 (a).
Another example would be somethi...
How to align absolutely positioned element to center?
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224
If you set both left and right to zero, and left and right margins to auto you can center an a...
What do the different readystates in XMLHttpRequest mean, and how can I use them?
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172
The full list of readyState values is:
State Description
0 The request is not initialized...