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How to efficiently count the number of keys/properties of an object in JavaScript?
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-1 (-200 if I could) This not only iterates through the object but also creates a whole new array with all its keys, so it completely fails at answering the question.
– GetFree
Jun 22 '12 at 14:2...
Managing relationships in Laravel, adhering to the repository pattern
...sing Laravel 4 and had to answer all of the questions you are asking right now. After reading all of the available Laravel books over at Leanpub, and tons of Googling, I came up with the following structure.
One Eloquent Model class per datable table
One Repository class per Eloquent Model
A Servi...
Dealing with float precision in Javascript [duplicate]
...r decimals, like decimal.js
Format your result to some fixed number of significant digits, like this:
(Math.floor(y/x) * x).toFixed(2)
Convert all your numbers to integers
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What is the difference between “px”, “dip”, “dp” and “sp”?
What is the difference between Android units of measure?
33 Answers
33
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Blocks on Swift (animateWithDuration:animations:completion:)
I'm having trouble making the blocks work on Swift. Here's an example that worked (without completion block):
7 Answers
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Copy array by value
...ees'];
var lyrics = ['head', ...parts, 'and', 'toes'];
Array spreads are now supported in all major browsers but if you need older support use typescript or babel and compile to ES5.
More info on spreads
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Loading basic HTML in Node.js
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I just found one way using the fs library. I'm not certain if it's the cleanest though.
var http = require('http'),
fs = require('fs');
fs.readFile('./index.html', function (err, html) {
if (err) {
throw err;
}
http.createServer(function(request, re...
What is Haskell used for in the real world? [closed]
...ses for this
language?
Rapid application development.
If you want to know "why Haskell?", then you need to consider advantages of functional programming languages (taken from https://c2.com/cgi/wiki?AdvantagesOfFunctionalProgramming):
Functional programs tend to be much more terse than t...
Python extract pattern matches
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You need to capture from regex. search for the pattern, if found, retrieve the string using group(index). Assuming valid checks are performed:
>>> p = re.compile("name (.*) is valid")
>>> result = p.search(s)
>>> result
<_sre.SRE_Match object at 0x105...
What is Java String interning?
...gs will ensure that all strings having same contents share same memory. So if you have list of names where 'john' appears 1000 times, by interning you ensure only one 'john' is actually allocated memory.
This can be useful to reduce memory requirements of your program. But be aware that the cache i...