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What is the python “with” statement designed for?
...or row in lines:
with open("outfile","a") as f:
f.write(row)
vs
with open("outfile","a") as f:
for row in lines:
f.write(row)
The first way is opening and closing the file for each row which may cause performance problems compared to the second way with opens and closes ...
When to throw an exception?
...
community wiki
2 revsThe Digital Gabeg
18
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C# How can I check if a URL exists/is valid?
...DownloadString to check for errors; no error? It exists...
With C# 2.0 (VS2005):
private bool headOnly;
public bool HeadOnly {
get {return headOnly;}
set {headOnly = value;}
}
and
using(WebClient client = new MyClient())
{
// code as before
}
...
Is it possible to pass a flag to Gulp to have it run tasks in different ways?
...bine it with gulp-if to conditionally pipe the stream, very useful for dev vs. prod building:
var argv = require('yargs').argv,
gulpif = require('gulp-if'),
rename = require('gulp-rename'),
uglify = require('gulp-uglify');
gulp.task('my-js-task', function() {
gulp.src('src/**/*.js')
...
How do I import other TypeScript files?
When using the TypeScript plugin for vs.net, how do I make one TypeScript file import modules declared in other TypeScript files?
...
Should I index a bit field in SQL Server?
...ows with 50/50 distribution, it might buy you very little performance gain vs. keeping the index up to date.
The reason everyone says to test is because SQL contains a very clever and complex optimizer that may ignore an index if it decides table scanning is faster, or may use a sort, or may organi...
Purpose of asterisk before a CSS property
... Hack are two different things: en.wikipedia.org/wiki/CSS_filter#Star_hack vs en.wikipedia.org/wiki/CSS_filter#Star_HTML_hack
– Mike Covington
Apr 22 '15 at 18:44
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What's the best way of implementing a thread-safe Dictionary?
...d, I know, but it is important to note that using the ConcurrentDictionary vs a Dictionary can result in significant performance losses. This is most likely the result of expensive context switching, so be certain that you need a thread-safe dictionary before using one.
– outb...
Which MySQL data type to use for storing boolean values
...rt to comply with convention and slightly less computation overhead (logic vs exact value) I would say BIT is the better way to go.
– zamnuts
Aug 13 '12 at 19:28
63
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Find out what process registered a global hotkey? (Windows API)
...ading the community edition of Visual Studio at visualstudio.microsoft.com/vs/community (I cannot edit the answer myself ...)
– Oscar Scholten
Sep 19 at 13:38
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