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How to express infinity in Ruby?
...own constant using the following*:
I've checked that in Ruby 1.8.6, 1.8.7, and 1.9.2 you have Float.infinite?.
PositiveInfinity = +1.0/0.0
=> Infinity
NegativeInfinity = -1.0/0.0
=> -Infinity
CompleteInfinity = NegativeInfinity..PositiveInfinity
=> -Infinity..Infinity
*I've verified ...
How to get orientation-dependent height and width of the screen?
I'm trying to programmatically determine the current height and width of my application. I use this:
11 Answers
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How to call Makefile from another Makefile?
...rom another. I have two makefiles, one called /path/to/project/makefile and one called /path/to/project/gtest-1.4.0/make/Makefile . I'm attempting to have the former call the latter. In /path/to/project/makefile, I have
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Reference requirements.txt for the install_requires kwarg in setuptools setup.py file
.... It seems silly to duplicate the requirements in both requirements.txt and setup.py , so I was hoping to pass a file handle to the install_requires kwarg in setuptools.setup .
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Lightweight Javascript DB for use in Node.js [closed]
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I'm only familiar with Mongo and Couch, but there's also one named Persistence.
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Multiprocessing - Pipe vs Queue
What are the fundamental differences between queues and pipes in Python's multiprocessing package ?
2 Answers
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NULL vs nil in Objective-C
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nil should only be used in place of an id, what we Java and C++ programmers would think of as a pointer to an object. Use NULL for non-object pointers.
Look at the declaration of that method:
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object
change:(NSDi...
PHP - concatenate or directly insert variables in string
...in such a case (Variable interpolation), which I find easier to both write and read.
The result will be the same; and even if there are performance implications, those won't matter 1.
As a sidenote, so my answer is a bit more complete: the day you'll want to do something like this:
echo "Welcome...
Filename too long in Git for Windows
...hen Git is compiled with msys. It uses an older version of the Windows API and there's a limit of 260 characters for a filename.
So as far as I understand this, it's a limitation of msys and not of Git. You can read the details here:
https://github.com/msysgit/git/pull/110
You can circumvent this ...
RVM is not working in ZSH
I'd like to try out the ZSH shell on my Mac, but I also do a lot of Ruby and Rails development, so I use RVM quite a bit too. The problem is that I can't seem to get RVM to work in ZSH, and it's working fine in the default Bash shell:
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