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iOS start Background Thread
...ou'd probably be better off using Grand Central Dispatch, though:
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
[self getResultSetFromDB:docids];
});
GCD is a newer technology, and is more efficient in terms of memory overhead and lines of code.
Updated w...
Is there a performance gain in using single quotes vs double quotes in ruby?
...
$ ruby -v
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin11.0.0]
$ cat benchmark_quotes.rb
# As of Ruby 1.9 Benchmark must be required
require 'benchmark'
n = 1000000
Benchmark.bm(15) do |x|
x.report("assign single") { n.times do; c = 'a string'; end}
x.report("assi...
Why use the 'ref' keyword when passing an object?
...) {
obj = new Object();
}
public void Method2(object obj) {
obj = _privateObject;
}
The methods above does not modifies the original object.
A little modification of your example
using System;
class Program
{
static void Main(string[] args)
{
...
Differences between Agda and Idris
...gt; a -> b -> Type where
refl : x = x
while in Agda, it is
data _≡_ {l} {A : Set l} (x : A) : A → Set a where
refl : x ≡ x
The l in the Agda defintion can be ignored, as it has to do with the universe polymorphism that Edwin mentions in his answer.
The important difference is...
Are there any downsides to passing structs by value in C, rather than passing a pointer?
...
For small structs (eg point, rect) passing by value is perfectly acceptable. But, apart from speed, there is one other reason why you should be careful passing/returning large structs by value: Stack space.
A lot of C programming ...
TypeError: ObjectId('') is not JSON serializable
...
Pymongo provides json_util - you can use that one instead to handle BSON types
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What does this symbol mean in JavaScript?
...ncatenation, and subtraction operators; unary sign operators
What does = +_ mean in JavaScript, Single plus operator in javascript
What's the significant use of unary plus and minus operators?
Why is [1,2] + [3,4] = "1,23,4" in JavaScript?
Why does JavaScript handle the plus and minus operators bet...
Get local IP address in node.js
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@CarterCole you need an extra call to .values() before flatten.
– Guido
Mar 4 '15 at 9:41
3
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Append a Lists Contents to another List C#
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Here is my example:
private List<int> m_machinePorts = new List<int>();
public List<int> machinePorts
{
get { return m_machinePorts; }
}
Init()
{
// Custom function to get available ethernet ports
List<i...
Calculate distance between two latitude-longitude points? (Haversine formula)
...a that the Wikipedia article uses? Is it more efficient and/or more numerically stable?
– musiphil
Dec 20 '12 at 3:47
...