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What blocks Ruby, Python to get Javascript V8 speed? [closed]
...ineers working on it, that have decades of experience (I'm talking individually – collectively it's more like centuries) in creating high-performance execution engines for dynamic OO languages. They are basically the same people who also created the Sun HotSpot JVM (among many others).
Lars Bak,...
What's the fastest way to loop through an array in JavaScript?
...o
Currently, the fastest form of loop (and in my opinion the most syntactically obvious).
A standard for-loop with length caching
var i = 0, len = myArray.length;
while (i < len) {
// your code
i++
}
I would say, this is definitely a case where I applaud JavaScript en...
Split (explode) pandas dataframe string entry to separate rows
...bine where Apply returns a dataframe of arbitrary size (but consistent for all chunks), and Combine just vstacks the returned DFs?
– Vincent
Oct 2 '12 at 0:22
...
Application Loader stuck at “Authenticating with the iTunes store” when uploading an iOS app
...perly communicate error messages. Stuck on authenticating is not useful at all.
– Domen Grabec
May 5 '17 at 17:22
...
Laravel migration: unique key is too long, even if specified
...
Specify a smaller length for your e-mail:
$table->string('email', 250);
Which is the default, actually:
$table->string('email');
And you should be good.
For Laravel 5.4 you can find a solution in this Laravel 5.4: Specified ...
Why does Apple recommend to use dispatch_once for implementing the singleton pattern under ARC?
...
dispatch_once() is absolutely synchronous. Not all GCD methods do things asynchronously (case in point, dispatch_sync() is synchronous). The use of dispatch_once() replaces the following idiom:
+ (MyClass *)sharedInstance {
static MyClass *sharedInstance;
@synchr...
View differences of branches with meld?
...
I also found this issue annoying so I've made git meld which allows a more comfortable way of diffing arbitrary commits against the working tree or the staging area. You can find it at https://github.com/wmanley/git-meld . It's a bit like Mark's script but works for comparing any arbi...
Is if(items != null) superfluous before foreach(T item in items)?
...
@CodeInChaos: Do you typically find that the speed of enumerating an empty sequence is the performance bottleneck in your program?
– Eric Lippert
Jun 23 '11 at 15:19
...
Why does PHP 5.2+ disallow abstract static class methods?
...2, I saw a load of strict standards warnings from a project that was originally written without strict warnings:
8 Answers
...
Create subdomains on the fly with .htaccess (PHP)
...ches[1])) {
$subdomain = $matches[1];
}
I have used regex here to to allow for people hitting your site via www.subdomain.example.org or subdomain.example.org.
If you never anticipate having to deal with www. (or other subdomains) then you could simply use a substring like so:
$subdomain = s...