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How do I control how Emacs makes backup files?

...tory as the file you're editing, but that is easy to change. You can make all backup files go into a directory by putting something like the following in your .emacs. (setq backup-directory-alist `(("." . "~/.saves"))) There are a number of arcane details associated with how Emacs might create y...
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“for” vs “each” in Ruby

...The reason why x remains in the for scenario is due to the fact that (generally speaking) keywords don't create new scopes. if, unless, begin, for, while, etc. all work with the current scope. #each however accepts a block. Blocks always add their own scope on top of the current scope. Meaning that ...
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How to get the path of the batch script in Windows?

... %~dp0 will be the directory. Here's some documentation on all of the path modifiers. Fun stuff :-) To remove the final backslash, you can use the :n,m substring syntax, like so: SET mypath=%~dp0 echo %mypath:~0,-1% I don't believe there's a way to combine the %0 syntax with the ...
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What are the main uses of yield(), and how does it differ from join() and interrupt()?

...m a little bit confused about the use of yield() method in Java, specifically in the example code below. I've also read that yield() is 'used to prevent execution of a thread'. ...
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Importing a GitHub project into Eclipse

...epository’s location and connection data. Entering the URI will automatically fill some fields. Complete any other required fields and hit Next. If you use GitHub, you can copy the URI from the web page. Select all branches you wish to clone and hit Next again. Hit the Clone… button to ...
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Why malloc+memset is slower than calloc?

It's known that calloc is different than malloc in that it initializes the memory allocated. With calloc , the memory is set to zero. With malloc , the memory is not cleared. ...
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How to output git log with the first line only?

I am trying to customize the format for git log . I want all commits to be shown in one line. Each line should only show the first line of the commit message. I found out that git log --pretty=short should do the trick but on my computer it shows the full log as git log does (besides the ti...
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Why do I get a SyntaxError for a Unicode escape in my file path?

The folder I want to get to is called python and is on my desktop. 7 Answers 7 ...
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How to change facet labels?

..." ) Then create a 'labeller' function, and push it into your facet_grid call: hospital_labeller <- function(variable,value){ return(hospital_names[value]) } ggplot(survey,aes(x=age)) + stat_bin(aes(n=nrow(h3),y=..count../n), binwidth=10) + facet_grid(hospital ~ ., labeller=hospital_labelle...
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Determine the path of the executing BASH script [duplicate]

...you're executing is aliased (through alias in .bash_profile). You should really use $BASH_SOURCE variable, instead of $0. – Dmitri Sologoubenko Feb 27 '15 at 12:45 ...