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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...
How do I count the number of occurrences of a char in a String?
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how to ignore namespaces with XPath
... Dirk VollmarDirk Vollmar
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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, ...
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 empty a list?
... label with a new empty list:
del lst[:]
Here's an example:
lst1 = [1, 2, 3]
lst2 = lst1
del lst1[:]
print(lst2)
For the sake of completeness, the slice assignment has the same effect:
lst[:] = []
It can also be used to shrink a part of the list while replacing a part at the same time (but ...
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...
How to find out which processes are using swap space in Linux?
...sing
81M of swap, but it also reports my system as a whole is using only 2M
of swap. Therefore, I will not add a similar Swap column to htop
because I don't know a reliable way to get this information (actually,
I don't think it's possible to get an exact number, because of shared
pages).
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Convert a string representation of a hex dump to a byte array using Java?
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24 Answers
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What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?
...tions about the long data type. In Java, to hold an integer greater than 2 32 , you would simply write long x; . However, in C++, it seems that long is both a data type and a modifier.
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