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Why do people say that Ruby is slow? [closed]
I like Ruby on Rails and I use it for all my web development projects. A few years ago there was a lot of talk about Rails being a memory hog and about how it didn't scale very well but these suggestions were put to bed by Gregg Pollack here.
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How to create streams from string in Node.Js?
...g"])
readable.on("data", (chunk) => {
console.log(chunk) // will be called once with `"input string"`
})
Note that at least between 10.17 and 12.3, a string is itself a iterable, so Readable.from("input string") will work, but emit one event per character. Readable.from(["input string"]) wil...
How do I declare class-level properties in Objective-C?
...mething that's equivalent to a static variable? E.g. only one instance for all types of Foo?
To declare class functions in Objective-C you use the + prefix instead of - so your implementation would look something like:
// Foo.h
@interface Foo {
}
+ (NSDictionary *)dictionary;
// Foo.m
+ (NSDicti...
Create a temporary table in a SELECT statement without a separate CREATE TABLE
...RARY table is visible only to the current session, and is dropped automatically when the session is closed. This means that two different sessions can use the same temporary table name without conflicting with each other or with an existing non-TEMPORARY table of the same name. (The existing table i...
How to include JavaScript file or library in Chrome console?
... aware of the fact that even getElementById() doesn't work consistently on all browsers - see this answer for details.)
UPDATE:
It's been years since I wrote this answer and I think it's worth pointing out here that today you can use:
SystemJS
ModuleLoader
jspm.io
to dynamically load scripts...
Object comparison in JavaScript [duplicate]
...ely there is no perfect way, unless you use _proto_ recursively and access all non-enumerable properties, but this works in Firefox only.
So the best I can do is to guess usage scenarios.
1) Fast and limited.
Works when you have simple JSON-style objects without methods and DOM nodes inside:
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Safely override C++ virtual functions
...ake the compiler check if the function I declared in the derived class actually overrides a function in the base class? I would like to add some macro or something that ensures that I didn't accidentally declare a new function, instead of overriding the old one.
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Swift equivalent for MIN and MAX macros
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With Swift 5, max(_:_:) and min(_:_:) are part of the Global Numeric Functions. max(_:_:) has the following declaration:
func max<T>(_ x: T, _ y: T) -> T where T : Comparable
You can use it like this with Ints:
let maxInt = max(5,...
Android OpenGL ES and 2D
...ur canvas with the proper GL flags for 2D (sprite) rendering.
You should really take a look at SpriteMethodTest by the same author of replica island: http://code.google.com/p/apps-for-android/source/browse/trunk/SpriteMethodTest
See this question where I posted my own code: Using OpenGL to replace ...
XAMPP, Apache - Error: Apache shutdown unexpectedly
I've just re-installed XAMPP, and when I try to start my Apache server in the XAMPP Control Panel, I now get the following errors:
...