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RabbitMQ and relationship between channel and connection
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201
A Connection represents a real TCP connection to the message broker, whereas a Channel is a vi...
“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 do I access named capturing groups in a .NET Regex?
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answered May 25 '09 at 12:18
Paolo TedescoPaolo Tedesco
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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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How to resize an Image C#
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508
This will perform a high quality resize:
/// <summary>
/// Resize the image to the speci...
Creating instance of type without default constructor in C# using reflection
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edited May 23 '17 at 12:03
Community♦
111 silver badge
answered Dec 24 '08 at 1:44
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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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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...