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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 class of the controller you wish to display the form under. ...
What's a standard way to do a no-op in python?
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Rails migrations: self.up and self.down versus change
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git --git-dir not working as expected
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No need to set --git-dir and --work-tree anymore!
See commit 44e1e4 by Nazri Ramliy:
It takes more keypresses to invoke git command in a different directory without leaving the current directory:
(cd ~/foo && git status)
git --git-dir=~/foo/.git --work-dir=~/foo status
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Hyphen, underscore, or camelCase as word delimiter in URIs?
...s to look like it has spaces in it instead of underscores.
CamelCase
By far my favorite, since it makes the URLs seem to flow better and doesn't have any of the faults that the previous two options do.
Can be slightly harder to read for people that have a hard time differentiating upper-case f...
C# Convert List to Dictionary
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By using ToDictionary:
var dictionary = list.ToDictionary(s => s);
If it is possible that any string could be repeated, either do a Distinct call first on the list (to remove duplicates), or use ToLookup which allows fo...
ImportError: no module named win32api
... and I want to use pywin32-214 on Windows 7 . I installed pywin32-214 by using the msi installer. But when I import win32api in my Python script, it throws the error:
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Is leaked memory freed up when the program exits?
...tly and handles that are not closed explicitly, but this is not guaranteed by the C++ standard. You may find some embedded device that do not free up your memory leaks.
That being said Windows and all distros of Linux that I've ever seen do free up memory leaks.
You can easily create a huge loop ...
How do I make a matrix from a list of vectors in R?
...on that is fairly intuitive. However, since R's default is to fill in data by columns first, you will need to transpose the output. (sapply uses simplify2array, as documented in help(sapply).)
> t(simplify2array(a))
[,1] [,2] [,3] [,4] [,5] [,6]
[1,] 1 1 2 3 4 5
[2,] ...
How to prevent gcc optimizing some statements in C?
...ty (switching on the dirty bit in the page table entry), I touch the first bytes of the page like this:
3 Answers
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