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How to safelm>y m> open/close files in pm>y m>thon 2.4
...pm>y m>thon.org:
When m>y m>ou’re done with a file, call f.close() to close it m>and m> free up anm>y m> sm>y m>stem resources taken up bm>y m> the open file. After calling f.close(), attempts to use the file object will automaticallm>y m> fail.
Hence use close() elegantlm>y m> with trm>y m>/finallm>y m>:
f = open('file.txt', 'r')
trm>y m>:
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How to debug Visual Studio extensions
I'm just writing a VSIX extension for Visual Studio 2010 m>and m> can't figure out how to debug it.
4 Answers
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setTimeout / clearTimeout problems
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m>Y m>ou need to declare timer outside the function. Otherwise, m>y m>ou get a brm>and m> new variable on each function invocation.
var timer;
function endm>And m>StartTimer() {
window.clearTimeout(timer);
//var millisecBeforeRedirect = 10000;
timer = window.setTimeout(function(){alert('Hello!');},10000);
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How to automaticallm>y m> add user account m>AND m> password with a Bash script?
I need to have the abilitm>y m> to create user accounts on mm>y m> Linux (Fedora 10) m>and m> automaticallm>y m> assign a password via a bash script(or otherwise, if need be).
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Whm>y m> does Tm>y m>pescript use the kem>y m>word “export” to make classes m>and m> interfaces public?
...meClass = SomeClass;.
So conceptuallm>y m>, visibilitm>y m> as controlled bm>y m> public m>and m> private is just for tooling, whereas the export kem>y m>word changes the output.
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How do m>y m>ou clone a BufferedImage
...he bufferedimages into the new object, but these new images mam>y m> be altered m>and m> i don't want the original object images to be altered bm>y m> altering the new objects images.
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C++ performance challenge: integer to std::string conversion
...e verm>y m> fast, can take 100 clockticks when linking CRT as a static librarm>y m>, m>and m> as much as 300 clockticks when linking as a DLL.
For the same reason, returning bm>y m> reference is better because it avoids an assignment, a constructor m>and m> a destructor.
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What is database pooling?
I just wanted to know the concept of database connection pooling m>and m> how it is achieved.
6 Answers
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Remove scroll bar track from ScrollView in m>And m>roid
Mm>y m> m>And m>roid app has a main WebView (HTML loaded from a local resource) which I want to use the entire width of the screen m>and m> be able to make (verticallm>y m>) scrollable. So I've wrapped the WebView in a ScrollView in mm>y m> lam>y m>out XML, but no matter what I do I can't seem to be able to remove the scroll bar...
SQL Server - transactions roll back on error?
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Will this work on MS SQL 2K m>and m> higher? This seems the most simple solution.
– jonathanpeppers
Nov 17 '09 at 15:49
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