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What does JVM flag CMSClassUnloadingEnabled actually do?
...anguages like Groovy, that define classes at runtime. Every time you run a script, one (or more) new classes are created and they stay in PermGen forever. If you're running a server, that means you have a memory leak.
If you enable CMSClassUnloadingEnabled the GC will sweep PermGen, too, and remove...
Django connection to PostgreSQL: “Peer authentication failed”
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That is probably because your script is running under some other user than the one you are trying to connect with (myuser here). In this case, peer authentication will fail. Your solution with HOST: "localhost" works because you are not using peer auth an...
Do python projects need a MANIFEST.in, and what should be in it?
...ll the files you feel important for the program to run (modules, packages, scripts ...)
Clarify, if there are some files to add or some files to exclude. If neither is needed, then there is no need for using MANIFEST.in.
If MANIFEST.in is needed, create it. Usually, you add there tests*/*.py files, ...
What is your most productive shortcut with Vim?
...reated as an extension of our editor. I have occasionally used these with scripts that pulled data from a database, or with wget or lynx commands that pulled data off a website, or ssh commands that pulled data from remote systems.
Another useful ex command is :so (short for :source). This reads t...
How can I do division with variables in a Linux shell?
...will be:
x=20; y=3;
calc $x/$y
or if you prefer, add this as a separate script and make it available in $PATH so you will always have it in your local shell:
#!/bin/bash
calc(){ awk "BEGIN { print $* }"; }
share
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HTML5shiv vs Dean Edwards IE7-js vs Modernizr - which to choose?
...tags in IE, like html5shiv.
ie7.js (as well as ie8.js and ie9.js) uses Javascript to retro-fit some missing functionality to IE.
As far as I'm aware there's no cross-over between them (aside from html5shiv/modernizr), so you can use any combination of them, depending on what features you need to i...
Modify file in place (same dest) using Gulp.js and a globbing pattern
...emaps.write('./'))
.pipe(gulp.dest("."));
});
//scripts
gulp.watch([srcPath + '.js','!'+ srcPath + 'min.js']).on("change", function(file) {
console.log("Compiling JS File: " + file.path)
gulp.src(file.path, { base: "./" })
.pipe(uglify())
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Why is parenthesis in print voluntary in Python 2.7?
...SCII is default encoding for Python. But I have at the beginning of Python script #encoding=utf-8, linux env LANG=en_US.UTF-8. So repr encodes not using default ASCII, but utf-8 encoding.
– Karlo Smid
Aug 18 '12 at 9:22
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List files by last edited date
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Great code, it took the script approx. 5 seconds to sort and print out 13k photos in many different folders (through Cygwin on a quite slow computer).
– Magnus
Jan 21 '12 at 10:14
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Define make variable at rule execution time
...latively easy way of doing this is to write the entire sequence as a shell script.
out.tar:
set -e ;\
TMP=$$(mktemp -d) ;\
echo hi $$TMP/hi.txt ;\
tar -C $$TMP cf $@ . ;\
rm -rf $$TMP ;\
I have consolidated some related tips here: https://stackoverflow.com/a/29085684/86967
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