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Bash: Strip trailing linebreak from output
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If your expected output is a single line, you can simply remove all newline characters from the output. It would not be uncommon to pipe to the 'tr' utility, or to Perl if preferred:
wc -l < log.txt | tr -d '\n'
wc -l < log.txt | perl -pe 'chomp'
You can also use command substit...
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,...
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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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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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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How to get back to most recent version in Git?
...ch. So does that mean that when I check out a previous version, I'm essentially creating a branch?
– Nathan Long
Aug 24 '10 at 17:19
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Java: Difference between PrintStream and PrintWriter
...es using the default platform encoding. Using the default encoding is generally a bad thing since it can lead to bugs when moving from one platform to another, especially if you are generating the file on one platform and consuming it on another.
With a Writer, you typically specify the encoding to...
“Add as Link” for folders in Visual Studio projects
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@mo. your answer adds links to all files in the project root, sometimes it is inconvenient. %(RecursiveDir) should changed to some link folder name: for example to link source folder from wp7 project 'MyMainProject' in another project in this solutio...
Store pictures as files or in the database for a web app?
...l include a lot of pictures and hopefully a fair amount of traffic. I do really want to achieve performance.
10 Answers
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