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Remove blank lines with grep
...rt of line
[[:space:]] match whitespace- spaces, tabs, carriage returns, etc.
* previous match (whitespace) may exist from 0 to infinite times
$ match end of line
Running the code-
$ echo "
> hello
>
> ok" |
> grep -v "^[[:space:]]*$"
hello
ok
To und...
Add a property to a JavaScript object using a variable as the name?
...must use the actual property name explicitly. No substitution, variables, etc.
Bracket notation is open ended. It uses a string but you can produce the string using any legal js code. You may specify the string as literal (though in this case dot notation would read easier) or use a variable ...
How to create border in UIButton?
... above allows you to set other properties like corner radius, maskToBounds etc...
Also, a good article on button fun:
https://web.archive.org/web/20161221132308/http://www.apptite.be/tutorial_custom_uibuttons.php
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CSS content generation before or after 'input' elements [duplicate]
...
This is the same reason why it does not work for <br>, <img>, etc. (<textarea> seems to be special).
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Visual Studio retrieving an incorrect path to a project from somewhere
...e .vsproj files, and getting latest, deleting re-getting, adding removing, etc.. I tried everything noted here... even upgrading my workspace, which I'm not sure what that even did.
FINALLY... I deleted the *.suo files and viola. It worked.
I spent a couple hours on this one.
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What does = +_ mean in JavaScript
... a number.
_ is only a variable name (not an operator), it could be a, foo etc.
Example:
+"1"
cast "1" to pure number 1.
var _ = "1";
var r = +_;
r is now 1, not "1".
Moreover, according to the MDN page on Arithmetic Operators:
The unary plus operator precedes its operand and evaluates ...
Windows API Code Pack: Where is it? [closed]
...to see that the actual work is done via built-in .NET dlls ("shell32.dll", etc.) See ShellNativeMethods.cs for the DllImport definitions.
– ToolmakerSteve
Apr 1 '18 at 20:16
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Renaming the current file in Vim
...node and change file name. Also there are options like delete, copy, move, etc...
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JSHint and jQuery: '$' is not defined
...by default
"node": true,
// others (e.g. yui, mootools, rhino, worker, etc.)
"globals": {
"$":false,
"jquery":false,
"angular":false
// other explicit global names to exclude
},
}
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How to set layout_weight attribute dynamically from code?
...esn't modify any previously set variables like width/height/margin/padding etc. Everything is being kept and re-used while the weight is changed.
– MrMaffen
Mar 28 '15 at 20:34
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