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The Ruby %r{ } expression
...pace as delimiter, this is awesome, but not the sort of thing I will recommand to be able to read your code without beeing puzzled six month later :)
– Eureka
Sep 21 '12 at 10:59
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Insert the carriage return character in vim
...Ctrl-V tells vi that the next character typed should be inserted literally and ctrl-m is the keystroke for a carriage return.
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Devise form within a different controller
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As Andres says, the form calls helpers which are specified by Devise and so aren't present when you access a Devise form from a non-Devise controller.
To get around this, you need to add the following methods to the helper clas...
How long does it take for GitHub page to show changes after changing index.html
...t (or break a cache) you can append a query string like myfile.jpg?ver=123 and every time you update the string the cache will bust, and you can verify that the CDN is updating.
– Joel Glovier
Dec 19 '16 at 14:10
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Number of lines in a file in Java
...ly need to know the number of lines in these files, usually I open them up and read them line by line until I reach the end of the file
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Redis: Show database size/size for keys
My redis instance seems to being growing very large and I'd like to find out which of the multiple databases I have in there consumes how much memory. Redis' INFO command just shows me the total size and the number of keys per database which doesn't give me much insight... So any tools/ideas that ...
The calling thread cannot access this object because a different thread owns it
... answered Mar 16 '12 at 6:22
CandideCandide
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Read input from console in Ruby?
...ing like that?
Update
Kernel.gets tries to read the params found in ARGV and only asks to console if not ARGV found. To force to read from console even if ARGV is not empty use STDIN.gets
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Purpose of Python's __repr__
... for someone confused over this, imho. (If I've gone to far, just re-edit, and I'll owe you a beer.)
– Roger Pate
Dec 31 '09 at 6:47
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initializing a Guava ImmutableMap
...tableMap class provides six different of() methods, accepting between zero and five key-value pairings. There is not an of(...) overload accepting a varags parameter because K and V can be different types.
You want an ImmutableMap.Builder:
ImmutableMap<String,String> myMap = ImmutableMap.<...