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When to use references vs. pointers
...should always use pointers, or const references, because references have a bit of unclear-syntax: they have reference behaviour but value syntax.
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How do I perform the SQL Join equivalent in MongoDB?
...ingle query. But MongoDB does not support joins and so, at times, requires bit of denormalization. Here, this means caching the 'username' attribute.
Relational purists may be feeling uneasy already, as if we were violating some universal law. But let’s bear in mind that MongoDB collections are no...
What is the difference between “ is None ” and “ ==None ”
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Also, is None is a bit (~50%) faster than == None :)
– Nas Banov
Jul 16 '10 at 1:08
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What is the fastest way to create a checksum for large files in C#
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Invoke the windows port of md5sum.exe. It's about two times as fast as the .NET implementation (at least on my machine using a 1.2 GB file)
public static string Md5SumByProcess(string file) {
var p = new Process ();
p.StartInfo...
Parse config files, environment, and command-line arguments, to get a single collection of options
...his as real code, I decided to take a little time tonight to clean it up a bit. :-)
– mgilson
Aug 11 '14 at 5:53
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Make an Installation program for C# applications and include .NET Framework installer into the setup
...aware that you'll need to rebuild your installer if your migrate from VS 2010 to VS 2012.
– tobinibot
Oct 22 '12 at 18:53
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Node.js project naming conventions for files & folders
...ith the Unix-style directory structure (whereas the former mixes this up a bit).
I also like this pattern to separate files:
lib/index.js
var http = require('http');
var express = require('express');
var app = express();
app.server = http.createServer(app);
require('./config')(app);
require('...
Suppressing deprecated warnings in Xcode
...stic ignored "-Wdeprecated-declarations"
which in turn makes it a little bit better practice than just suppressing all warning once and together... after all you got to know what you are doing it for.
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Flask-SQLAlchemy import/context issue
... a sketch of some of the power this gives you - there is obviously quite a bit more that you can do to make development even easier (using a create_app pattern, auto-registering blueprints in certain folders, etc.)
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How to print an exception in Python?
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In Python 2.6 or greater it's a bit cleaner:
except Exception as e: print(e)
In older versions it's still quite readable:
except Exception, e: print e
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