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What is the fastest or most elegant way to compute a set difference using Javascript arrays?
Let A and B be two sets. I'm looking for really fast or elegant ways to compute the set difference ( A - B or A \B , depending on your preference) between them. The two sets are stored and manipulated as Javascript arrays, as the title says.
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How to “crop” a rectangular image into a square with CSS?
I know that it is impossible to actually modify an image with CSS, which is why I put crop in quotes.
10 Answers
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In Rails, how do you render JSON using a view?
...uppose you're in your users controller and you want to get a json response for a show request, it'd be nice if you could create a file in your views/users/ dir, named show.json and after your users#show action is completed, it renders the file.
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Why is unsigned integer overflow defined behavior but signed integer overflow isn't?
...to implement with the integer representation it used. C implementations usually used the same representation used by the CPU - so the overflow behavior followed from the integer representation used by the CPU.
In practice, it is only the representations for signed values that may differ according to...
Reloading/refreshing Kendo Grid
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Developers explicitly say not to call refresh after read: telerik.com/forums/show-progress-spinner-during-load-refresh because it may prevent progress indicator from appearing.
– Rustam Miftakhutdinov
Mar 16 '15 at 15:29...
How do you clear the SQL Server transaction log?
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Making a log file smaller should really be reserved for scenarios where it encountered unexpected growth which you do not expect to happen again. If the log file will grow to the same size again, not very much is accomplished by shrinking it tem...
How to remove focus border (outline) around text/input boxes? (Chrome) [duplicate]
...ements such as DIV's used as modals. To prevent the highlight on those and all other elements as well, you can do:
*:focus {
outline: none;
}
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Delete all local changesets and revert to tree
I'm using Mercurial and I've got into a terrible mess locally, with three heads. I can't push, and I just want to delete all my local changes and commits and start again with totally clean code and a clean history.
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Difference between a class and a module
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@Caffeine not really because Ruby modules actually include implementations, whereas interfaces in Java are abstract
– Jorge Israel Peña
Jan 12 '13 at 6:34
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The 'json' native gem requires installed build tools
I have ruby 1.9.2p180 (2011-02-18) [i386-mingw32] installed on my windows 7 machine. Now I tried to install the JSON gem using the command, "gem install json" and got the following error.
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