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How to run Ruby code from terminal?
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178
If Ruby is installed, then
ruby yourfile.rb
where yourfile.rb is the file containing the rub...
Getting the count of unique values in a column in bash
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answered Feb 7 '11 at 15:36
Paused until further notice.Paused until further notice.
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How to change a command line argument in Bash?
... for the one(s) that you want to change. set -- is also specified by POSIX 7.
The "${@:1:2}" notation is expanded to the two (hence the 2 in the notation) positional arguments starting from offset 1 (i.e. $1). It is a shorthand for "$1" "$2" in this case, but it is much more useful when you want to...
Enumerable.Empty() equivalent for IQueryable
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Unfortunately that doesn't create an actual empty IQueryable, which means it causes e.g. Union queries to be broken up into multiple queries...
Can bash show a function's definition?
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370
Use type. If foobar is e.g. defined in your ~/.profile:
$ type foobar
foobar is a function
foo...
How do you grep a file and get the next 5 lines
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Chris SeymourChris Seymour
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how do you filter pandas dataframes by multiple columns
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176
Using & operator, don't forget to wrap the sub-statements with ():
males = df[(df[Gender]=...
A TwoWay or OneWayToSource binding cannot work on the read-only property
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174
It's hard to guess without code, but you should be able to set the BindingMode to OneWay.
<...
Javascript Reduce an empty array
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answered Apr 29 '14 at 8:17
xdazzxdazz
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Example invalid utf8 string?
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75
Take a look at Markus Kuhn's UTF-8 decoder capability and stress test file
You'll find example...