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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...
Count the number of occurrences of a string in a VARCHAR field?
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answered Sep 10 '12 at 2:56
yannisyannis
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Index (zero based) must be greater than or equal to zero
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192
Your second String.Format uses {2} as a placeholder but you're only passing in one argument, so ...
How to find out which processes are using swap space in Linux?
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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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Python memoising/deferred lookup property decorator
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12
For all sorts of great utilities I'm using boltons.
As part of that library you have cachedprop...
python generator “send” function purpose?
..._inputs():
... while True:
... x = yield
... yield x * 2
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>>> 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...
adding multiple entries to a HashMap at once in one statement
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262
You can use the Double Brace Initialization as shown below:
Map<String, Integer> hashMap...
Set environment variables from file of key/value pairs
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When should I use a struct instead of a class?
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297
MSDN has the answer:
Choosing Between Classes and Structures.
Basically, that page gives you ...
Invalid date format specification in gemspec
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edited Feb 19 '12 at 21:27
answered Sep 3 '11 at 3:22
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