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What does the double colon (::) mean in CSS?

...m pseudo classes (like :hover, :first-child, :not etc). It's best to use : for before and after pseudo elements since the single colon has better browser support, namely in earlier IE versions. share | ...
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wpf: how to show tooltip when button disabled by command?

... This goes in the xaml declaration for the object on which the tooltip will appear, i.e.: <Button ToolTipService.ShowOnDisabled="True">... – gusmally supports Monica Nov 4 '19 at 18:44 ...
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Drop multiple tables in one shot in mysql

... SET foreign_key_checks = 0; DROP TABLE IF EXISTS a,b,c; SET foreign_key_checks = 1; Then you do not have to worry about dropping them in the correct order, nor whether they actually exist. N.B. this is for MySQL only (as in th...
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How to make a in Bootstrap look like a normal link in nav-tabs?

I'm working in (formerly Twitter) Bootstrap 2 and I wanted to style buttons as though they were normal links. Not just any normal links, though; these are going in a <ul class="nav nav-tabs nav-stacked"> container. The markup will end up like this: ...
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In Java, are enum types inside a class static?

... had public class Foo { private enum Bar { A, B, C; } } For the enum values to properly act as constants, (psuedocode, ignoring access restrictions) Bar b1 = new Foo().A Bar b2 = new Foo().A b1 and b2 would have to be the same objects. ...
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What does the forward slash mean in the CSS font shorthand?

...e, 18px is the line height. The syntax is based on typographical notation for specifying the respective sizes, and is only applicable to the font shorthand property. In other words, the above declaration simply expands to the following: font-size: 12px; line-height: 18px; As always, if you set t...
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Cancel/kill window.setTimeout() before it happens

I have a few places where I use the line below to clear out a status, for example. I have a few of these that hang out for 10 seconds or more and if the user gets clicking around the action can occur at incorrect time intervals. ...
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Spring Boot - inject map from application.yml

...ct.name}, description=${project.description}}} There are various options for setting a prefix, controlling how missing properties are handled, etc. See the javadoc for more information. share | im...
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Get line number while using grep

I am using grep recursive to search files for a string, and all the matched files and the lines containing that string are print on the terminal. But is it possible to get the line numbers of those lines too?? ...
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How to throw std::exceptions with variable messages?

This is an example of what I often do when I want to add some information to an exception: 8 Answers ...