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What does “Splats” mean in the CoffeeScript tutorial?
... an empty array. In the last case, the function needs to receive more than 2 arguments for rest to be non-empty.
Since JavaScript doesn't allow multiple signatures for functions with the same name (the way C and Java do), splats are a huge time-saver for dealing with varying numbers of arguments.
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Get nodes where child node contains an attribute
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answered Sep 22 '09 at 1:07
laviniolavinio
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Is calculating an MD5 hash less CPU intensive than SHA family functions?
Is calculating an MD5 hash less CPU intensive than SHA-1 or SHA-2 on "standard" laptop x86 hardware? I'm interested in general information, not specific to a certain chip.
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Why do we need argc while there is always a null at the end of argv?
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Yes, argv[argc]==NULL is guaranteed. See C11 5.1.2.2.1 Program startup (my emphasis)
If they are declared, the parameters to the main function shall obey
the following constraints:
The value of argc shall be nonnegative.
argv[argc] shall be a null
pointer.
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How to create a temporary directory?
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answered Jan 8 '11 at 2:30
moinudinmoinudin
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Convert UNIX epoch to Date object
...integers representing the number of seconds since the UNIX epoch (e.g. 1352068320 ), but Date objects seem more appropriate for plotting. How can I do the conversion?
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How to escape % in String.Format?
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edited Jul 11 '12 at 13:50
Tim Cooper
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git - diff of current changes before committing
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2 Answers
2
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How do I retrieve the number of columns in a Pandas data frame?
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312
Like so:
import pandas as pd
df = pd.DataFrame({"pear": [1,2,3], "apple": [2,3,4], "orange": [3...
How can you use an object's property in a double-quoted string?
...double-quoted string it will be replaced by that variable's value:
$foo = 2
"$foo"
becomes
"2"
If you don't want that you have to use single quotes:
$foo = 2
'$foo'
However, if you want to access properties, or use indexes on variables in a double-quoted string, you have to enclose that sub...