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Regex using javascript to return just numbers
...= value.match( numberPattern ).join([]);
alert(value);
//Show: 675805714
Now you get the digits joined
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LINQ - Full Outer Join
...
I don't know if this covers all cases, logically it seems correct. The idea is to take a left outer join and right outer join then take the union of the results.
var firstNames = new[]
{
new { ID = 1, Name = "John" },
new { I...
Ruby off the rails
...imple script may often still be written directly for sh(1), a complex task now might be done in Ruby rather than Perl.
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Amazon EC2, mysql aborting start because InnoDB: mmap (x bytes) failed; errno 12
...ance. Since Micro instances have only 613MB of memory, MySQL crashed every now and then. After a long search about MySQL, Micro Instance and Memory Managment I found out there is no default SWAP space for Micro instance. So if you want to avoid the crash you may need to setup a swap space for your m...
What is a raw type and why shouldn't we use it?
...stException!
// java.lang.Boolean cannot be cast to java.lang.String
Now we run into trouble at run-time, because names contains something that isn't an instanceof String.
Presumably, if you want names to contain only String, you could perhaps still use a raw type and manually check every add ...
Cartesian product of multiple arrays in JavaScript
...b ? cartesian(f(a, b), ...c) : a);
Special thanks to ZuBB for letting me know about linter problems with the original code.
Update 2020:
Since I wrote this answer we got even better builtins, that can finally let us reduce (no pun intended) the code to just 1 line!
const cartesian =
(...a) => ...
Why do you program in assembly? [closed]
...e heck out of them in assembly. Or, if they're already experienced, they know which parts are going to be bottlenecks, and they've got optimized pieces sitting around from other games they've built.
The point of programming in assembly is the same as it always has been: speed. It would be ridicul...
Determine project root from a running node.js application
...his is using npm:
"scripts": {
"start": "NODE_PATH=. node app.js"
}
Now you can start your app with npm start and you're golden. I combine this with my enforce-node-path module, which prevents accidentally loading the app without NODE_PATH set. For even more control over enforcing environmen...
Why do I need an IoC container as opposed to straightforward DI code? [closed]
...hangedWrapper());
Poof! All of that manual INotifyPropertyChanged BS is now automatically generated for you, on every virtual property setter of the object in question.
Is this magic? YES! If you can trust the fact that this code does its job, then you can safely skip all of that property wrap...
C#: Difference between List and Collection (CA1002, Do not expose generic lists) [duplicate]
...tification events) when the collection is changed.
You may not need this now, but it is a common requirement for classes that contain collections, so it's best to plan for it in advance. Because Collection is designed with extensibility in mind it's very flexible. If in the future you decide you n...