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How to install 2 Anacondas (Python 2 and 3) on Mac OS
I'm relatively new in Mac OS. I've just installed XCode (for c++ compiler) and Anaconda with the latest Python 3 (for myself). Now I'm wondering how to install properly second Anaconda (for work) with Python 2?
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OS X: equivalent of Linux's wget
How can I do an HTTP GET from a Un*x shell script on a stock OS X system? (installing third-party software is not an option, for this has to run on a lot of different systems which I don't have control on).
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How can I easily fixup a past commit?
...uct a commit with a log message suitable for git rebase --interactive --autosquash. So the simplest way to fixup a past commit is now:
$ git add ... # Stage a fix
$ git commit --fixup=a0b1c2d3 # Perform the commit to fix broken a0b1c2d3
$ git rebase -i --autosqua...
Difference between wait() and sleep()
...two? If I can do everything that I can do with sleep why should I ever choose sleep?
– Balazs Zsoldos
Jul 30 '12 at 16:07
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python re.sub group: number after \number
How can I replace foobar with foo123bar ?
1 Answer
1
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Cache busting via params
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The param ?v=1.123 indicates a query string, and the browser will therefore think it is a new path from, say, ?v=1.0. Thus causing it to load from file, not from cache. As you want.
And, the browser will assume that the source will stay t...
How to escape os.system() calls?
When using os.system() it's often necessary to escape filenames and other arguments passed as parameters to commands. How can I do this? Preferably something that would work on multiple operating systems/shells but in particular for bash.
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How far can memory leaks go?
... to accept connections may take minutes to become free, even if properly closed by the program. A networked program may also hold remote resources such as database objects. The remote system should free those resources when the network connection is lost, but it may take even longer than the local o...
How to select where ID in Array Rails ActiveRecord without exception
...ore relevant for Rails 4.x
Do this:
current_user.comments.where(:id=>[123,"456","Michael Jackson"])
The stronger side of this approach is that it returns a Relation object, to which you can join more .where clauses, .limit clauses, etc., which is very helpful. It also allows non-existent IDs ...
How to remove files and directories quickly via terminal (bash shell) [closed]
...rm -rf.
Also note that what you're learning applies to bash on every Unix OS: OS X, Linux, FreeBSD, etc. In fact, rm's syntax is the same in pretty much every shell on every Unix OS. OS X, under the hood, is really a BSD Unix system.
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