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Add comma to numbers every three digits
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12 Answers
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Quickly find whether a value is present in a C array?
...ritical ISR that needs to iterate through an array of size 256 (preferably 1024, but 256 is the minimum) and check if a value matches the arrays contents. A bool will be set to true is this is the case.
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Counting inversions in an array
I'm designing an algorithm to do the following: Given array A[1... n] , for every i < j , find all inversion pairs such that A[i] > A[j] . I'm using merge sort and copying array A to array B and then comparing the two arrays, but I'm having a difficult time seeing how I can use this to find...
Stretch background image css?
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.style1 {
background: url(images/bg.jpg) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
Works in:
Safari 3+
Chrome Wha...
Generating a UUID in Postgres for Insert statement?
...t load it into your database to use it.
For modern PostgreSQL versions (9.1 and newer) that's easy:
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
but for 9.0 and below you must instead run the SQL script to load the extension. See the documentation for contrib modules in 8.4.
For Pg 9.1 and newe...
What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
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edited Oct 8 '18 at 14:13
answered Jun 17 '11 at 16:11
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What's the difference between std::move and std::forward
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160
std::move takes an object and allows you to treat it as a temporary (an rvalue). Although it i...
What is the best way to compute trending topics or tags?
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11 Answers
11
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When should I use Struct vs. OpenStruct?
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180
With an OpenStruct, you can arbitrarily create attributes. A Struct, on the other hand, must ...
Change working directory in my current shell context when running Node script
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146
The correct way to change directories is actually with process.chdir(directory). Here's an exa...