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How to plot two histograms together in R?
...ers. Each data frame has a single numeric column which lists the length of all measured carrots (total: 100k carrots) and cucumbers (total: 50k cucumbers).
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Where do you store your salt strings?
...ght about a salt per user I was thinking that a single salt would work for all users. What about a salt that is stored as an XML file that is loaded by the App Server? or maybe somehow hardcoded into a servlet?
– jigzat
Jul 25 '12 at 2:58
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Why does “split” on an empty string return a non-empty array?
...ngleton array containing just the input string is returned,
Second, remove all the rightmost empty strings. This is the reason ",,,".split(",") returns empty array.
According to this, the result of "".split(",") should be an empty array because of the second step, right?
It should. Unfortunately,...
Change multiple files
...ot even just a builtin. For sed -i 's/old/new' *, the expansion of * must ALL be passed as an arglist to sed, and I'm fairly sure this has to happen before the sed process can even be started. Using the for loop, the full arglist (the expansion of *) never gets passed as a command, only stored in ...
node.js shell command execution
... you are expecting synchronous behavior while using stdout asynchronously. All of the calls in your run_cmd function are asynchronous, so it will spawn the child process and return immediately regardless of whether some, all, or none of the data has been read off of stdout. As such, when you run
co...
What's the shortest code to cause a stack overflow? [closed]
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All these answers and no Befunge? I'd wager a fair amount it's shortest solution of them all:
1
Not kidding. Try it yourself: http://www.quirkster.com/iano/js/befunge.html
EDIT: I guess I need to explain this one. The 1 o...
JavaScript file upload size validation
...e used for this purpose, and it's easy to test whether it's supported and fall back (if necessary) to another mechanism if it isn't.
Here's a complete example:
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-type" content="text/html;charset=UTF-8">
<title>Show...
ASP.NET MVC How to convert ModelState errors to json
How do you get a list of all ModelState error messages? I found this code to get all the keys:
( Returning a list of keys with ModelState errors )
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Java equivalent to #region in C#
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Actually this can be achieved. If you scroll down on this post "Yaqub Ahmad" explains how to get this functionality. Also here is a link (kosiara87.blogspot.com/2011/12/…) that shows you how to add it to your existing eclipse e...
zsh compinit: insecure directories
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This is definitely the best solution for me. I installed zsh and zsh-completions with Homebrew, so obviously did not want to change it to be owned by root.
– katy lavallee
Oct 18 '16 at 18:10
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