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Make sure only a single instance of a program is running
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The following code should do the job, it is cross-platform and runs on Python 2.4-3.2. I tested it on Windows, OS X and Linux.
from tendo import singleton
me = singleton.SingleInstance() # will sys.exit(-1) if other instance is running
The latest code version ...
Why hasn't functional programming taken over yet?
...arative/functional programming (languages), tried out Haskell as well as written one myself. From what I've seen, functional programming has several advantages over the classical imperative style:
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Why should I learn Lisp? [closed]
...earn Lisp and there are plenty of good resources out there to help me do it.
29 Answers
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Is PHP compiled or interpreted?
...nguage. The binary that lets you interpret PHP is compiled, but what you write is interpreted.
You can see more on the Wikipedia page for Interpreted languages
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What is the difference between ArrayList.clear() and ArrayList.removeAll()?
...code for clear():
public void clear() {
modCount++;
// Let gc do its work
for (int i = 0; i < size; i++)
elementData[i] = null;
size = 0;
}
The source code for removeAll()(As defined in AbstractCollection):
public boolean removeAll(Collection<?> c) {
boolea...
How to color System.out.println output? [duplicate]
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No, but there are third party API's that can handle it
http://www.javaworld.com/javaworld/javaqa/2002-12/02-qa-1220-console.html
Edit: of course there are newer articles than that one I posted, the information is still viable though.
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C# - What does the Assert() method do? Is it still useful?
I am debugging with breakpoints and I realize the assert call? I thought it was only for unit tests. What does it do more than breakpoint? Since I can breakpoint, why should I use Assert?
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SQL Server Management Studio alternatives to browse/edit tables and run queries [closed]
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I've started using LinqPad. In addition to being more lightweight than SSMS, you can also practice writing LINQ queries- way more fun than boring old TSQL!
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Java abstract interface
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Why is it necessary for an interface to be "declared" abstract?
It's not.
public abstract interface Interface {
\___.__/
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'----> Neither this...
public void interfacing();
public abstract...
How to track untracked content?
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You have added vendor/plugins/open_flash_chart_2 as “gitlink” entry, but never defined it as a submodule. Effectively you are using the internal feature that git submodule uses (gitlink entries) but you are not using the submodule feature itself.
You probably did something l...