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How to get a specific version of a file in Mercurial?
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answered Jan 21 '10 at 14:32
djcdjc
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“Diff” an image using ImageMagick
...i) -- then just add an appropriate -density parameter:
compare -density 300 image1 image2 -compose src diff.jpeg
Illustrated examples
Here are a few illustrations of results for variations of the above command. Note: the two files compared were even PDF files, so it works with these too (as l...
How to integrate nodeJS + Socket.IO and PHP?
...{ name: data.name, message: data.message } );
});
});
server.listen( 8080 );
We registered our events callback when a new user is connected ; every time we receive a message (represents a chat message), we broadcast it to every users connected. Now, the tricky part: client-side! That the part...
How can I combine hashes in Perl?
... post on merging hashes
PM Categorical Q&A hash union
Perl Cookbook 5.10. Merging Hashes
websearch://perlfaq "merge two hashes"
websearch://perl merge hash
https://metacpan.org/pod/Hash::Merge
Footnotes
1 * (aka associative-array, aka dictionary)
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Passing arguments to require (when loading module)
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answered Oct 31 '12 at 17:00
floatingLomasfloatingLomas
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Android onCreate or onStartCommand for starting service
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answered Jan 6 '13 at 14:00
David WasserDavid Wasser
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Hidden features of Scala
.../M/D.
val regex = "(\\d+)/(\\d+)/(\\d+)".r
val regex(year, month, day) = "2010/1/13"
The second line looks confusing if you're not used to using pattern matching and extractors. Whenever you define a val or var, what comes after the keyword is not simply an identifier but rather a pattern. That'...
Regular Expression to get a string between parentheses in Javascript
...\(([^)]+)\)/;
var matches = regExp.exec("I expect five hundred dollars ($500).");
//matches[1] contains the value between the parentheses
console.log(matches[1]);
Breakdown:
\( : match an opening parentheses
( : begin capturing group
[^)]+: match one or more non ) characters
) : end ca...
HMAC-SHA1 in bash
...cript.
[me@home] echo -n "value" | openssl dgst -sha1 -hmac "key"
57443a4c052350a44638835d64fd66822f813319
Or simply:
[me@home] echo -n "value" | openssl sha1 -hmac "key"
57443a4c052350a44638835d64fd66822f813319
Remember to use -n with echo or else a line break character is appended to the str...
How to send JSON instead of a query string with $.ajax?
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edited Nov 18 '18 at 15:05
Mark Amery
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an...