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Defining custom attrs
...attributes are similar except the values need to be defined so they can be bit ored together:
<attr name="my_flag_attr">
<flag name="fuzzy" value="0x01" />
<flag name="cold" value="0x02" />
</attr>
In addition to attributes there is the <declare-styleable> elemen...
How can I programmatically generate keypress events in C#?
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The question is tagged WPF but the answers so far are specific WinForms and Win32.
To do this in WPF, simply construct a KeyEventArgs and call RaiseEvent on the target. For example, to send an Insert key KeyDown event to the currently focused element:
var key = Key.Insert; ...
Setting dynamic scope variables in AngularJs - scope.
...just do $scope[the_string] = !$scope[the_string];. Might muddle the code a bit though, so I am not sure if it is really something you would want.
– Erik Honn
Feb 25 '15 at 13:37
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Why .NET String is immutable? [duplicate]
...nute's extra start-up to save a massive amount of memory was a performance win in the case in question). With mutable objects that can't be done.
No side-effects can come from passing an immutable type as a method to a parameter unless it is out or ref (since that changes the reference, not the obje...
Check free disk space for current partition in bash
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Thanks for that! stat looks a bit mind-blowing to me. Reading the man page suggests I don't want -k on my version of df, but putting the path in did help.
– Greg Reynolds
Nov 13 '11 at 9:14
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How do I list loaded plugins in Vim?
...added benefit is that it shows plugin commands, mappings, files, and other bits and pieces.
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Explanation of JSONB introduced by PostgreSQL
...storage «as is»
jsonb: no whitespaces
jsonb: no duplicate keys, last key win
jsonb: keys are sorted
More in speech video and slide show presentation by jsonb developers. Also they introduced JsQuery, pg.extension provides powerful jsonb query language
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Argparse: Required arguments listed under “optional arguments”?
...on arguments). It is possible to require optional arguments, but this is a bit against their design. Since they are still part of the non-positional arguments, they will still be listed under the confusing header “optional arguments” even if they are required. The missing square brackets in the ...
What is the difference between NaN and None?
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NaN is used as a placeholder for missing data consistently in pandas, consistency is good. I u...
How can you automatically remove trailing whitespace in vim
...obtrusive-highlighting-of-trailing.html (the link no longer works, but the bit you need is below)
"This has the advantage of not highlighting each space you type at the end of the line, only when you open a file or leave insert mode. Very neat."
highlight ExtraWhitespace ctermbg=red guibg=red
au ...