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Difference between single and double square brackets in Bash
... expands to [ a b = 'a b' ]
x='*'; [ $x = 'a b' ]: syntax error if there's more than one file in the current directory.
x='a b'; [ "$x" = 'a b' ]: POSIX equivalent
=
[[ ab = a? ]]: true, because it does pattern matching (* ? [ are magic). Does not glob expand to files in current directory.
[ ab =...
Numpy array assignment with copy
... to work. B[:] = A[:] does the same thing (but B = A[:] would do something more like 1).
numpy.copy(B, A)
This is not legal syntax. You probably meant B = numpy.copy(A). This is almost the same as 2, but it creates a new array, rather than reusing the B array. If there were no other references to t...
Reading Excel files from C#
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Automatic Retina images for web sites
...et
good explanation about why and how to use srcset
Chris Coyer's post for more good info
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How to create a directory in Java?
... As of Java 7, you should probably use the methods in Files as in the more recent answer by Benoit Blanchon. (This answer appears to have been written before Java 7.)
– Brick
Sep 8 '16 at 16:58
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What is polymorphism, what is it for, and how is it used?
...n include method overloading with different parameter types as well as the more pure form of polymorphism.
– paxdiablo
Apr 18 '17 at 3:21
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Using module 'subprocess' with timeout
...rectly, doesn't ignore errors, it is available since forever). 2- run() is more flexible but run() ignores error by default and requires additional steps to get output 3- check_output() is implemented in terms of run() and therefore it accepts most of the same arguments. 4- nit: capture_output is a...
Difference between SelectedItem, SelectedValue and SelectedValuePath
... Glad you're enjoying the book :). Since you've got the book, you'll find more information on this topic on pages 69-70, and page 204.
– Chris Anderson
Feb 4 '11 at 20:59
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How to determine if a list of polygon points are in clockwise order?
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