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Dealing with “java.lang.OutOfMemoryError: PermGen space” error
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The solution was to add these flags to JVM command line when Tomcat is started:
-XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenSweepingEnabled
You can do that by shutting down the tomcat service, then going into the Tomcat/bin directory and running tomcat6w.exe. Under the "Java" tab, add the ar...
Shell - Write variable contents to a file
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None of the answers above work if your variable:
starts with -e
starts with -n
starts with -E
contains a \ followed by an n
should not have an extra newline appended after it
and so they cannot be relied upon for arbitrary string contents.
In bash, you can use "here stri...
What's the difference between ASCII and Unicode?
... á, ü, ç, ñ, etc. (aka diacritics).
ASCII Extended
Some clever people started using the 8th bit (the bit used for parity) to encode more characters to support their language (to support "é", in French, for example). Just using one extra bit doubled the size of the original ASCII table to map u...
How to stop/terminate a python script from running?
I wrote a program in IDLE to tokenize text files and it starts to tokeniza 349 text files! How can I stop it? How can I stop a running Python program?
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How do I run a Python program?
So I'm starting like Python a bit, but I'm having trouble erm...running it. Lol
10 Answers
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Reasons for using the set.seed function
Many times I have seen the set.seed function in R, before starting the program. I know it's basically used for the random number generation. Is there any specific need to set this?
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Python - doctest vs. unittest [closed]
I'm trying to get started with unit testing in Python and I was wondering if someone could explain the advantages and disadvantages of doctest and unittest.
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How can I convert this foreach code to Parallel.ForEach?
...w processes can be slower, as they're run serially
Process 2 can't start until 1 is done. Process 3 can't start until 2 & 1 are done...
Execution of quick processes can be faster, as there is no threading overhead
Parallel.ForEach:
Execution takes place in parallel way.
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ASP.NET MVC - Find Absolute Path to the App_Data folder from Controller
...on't work in some situations where there isn't an HttpContext (application_start etc)
– mcintyre321
Sep 15 '14 at 12:18
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show 2 more commen...
How to “properly” create a custom object in JavaScript?
...gramming languages, and in many places straight-up badly designed.)
Let's start with the prototype way. This is the most JavaScript-native you can get: there is a minimum of overhead code and instanceof will work with instances of this kind of object.
function Shape(x, y) {
this.x= x;
this...