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How to serve an image using nodejs
...s example has simple path traversal countermeasures and supports a limited set of most common MIME types.
var path = require('path');
var express = require('express');
var app = express();
var fs = require('fs');
var dir = path.join(__dirname, 'public');
var mime = {
html: 'text/html',
tx...
Why is NaN not equal to NaN? [duplicate]
...ns, whether that be node.js or COBOL (hah).
In theory, you don't have to set specific #pragma directives, set crazy compiler flags, catch the correct exceptions, or install special signal handlers to make what appears to be the identical algorithm actually work correctly. Unfortunately some langua...
How Do I Take a Screen Shot of a UIView?
...o it in Retina Resolution using UIGraphicsBeginImageContextWithOptions and set its scale parameter 0.0f. It always captures in native resolution (retina for iPhone 4 and later).
This one does a full screen screenshot (key window)
UIWindow *keyWindow = [[UIApplication sharedApplication] keyWindow];...
Python glob multiple filetypes
.../*/*.'
exts = ['mp3', 'flac', 'wma']
chars = ''.join('[{}]'.format(''.join(set(c))) for c in zip(*exts))
mask = mask_base + chars + ('*' if len(set(len(e) for e in exts)) > 1 else '')
print(mask) # music/*/*.[fmw][plm][3a]*
...
git submodule tracking latest
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Casting vs using the 'as' keyword in the CLR
When programming interfaces, I've found I'm doing a lot of casting or object type conversion.
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What's the equivalent of Java's Thread.sleep() in Objective-C/Cocoa?
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Using @property versus getters and setters
...ture versions of the code. It doesn't prevent you from actually getting or setting that attribute. Therefore, standard attribute access is the normal, Pythonic way of, well, accessing attributes.
The advantage of properties is that they are syntactically identical to attribute access, so you can ch...
Where are shared preferences stored?
...
Preferences can either be set in code or can be found in res/xml/preferences.xml. You can read more about preferences on the Android SDK website.
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Is there a way to cache GitHub credentials for pushing commits?
...o keep your password cached in memory for (by default) 15 minutes. You can set a longer timeout with:
git config --global credential.helper "cache --timeout=3600"
(That example was suggested in the GitHub help page for Linux.) You can also store your credentials permanently if so desired, see the...