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What is the Ruby (spaceship) operator?
...
The spaceship method is useful when you define it in your own class and include the Comparable module. Your class then gets the >, < , >=, <=, ==, and between? methods for free.
class Card
include Comparable
attr_reader :value
def initialize(value)
@value = value
end
...
Create a tag in a GitHub repository
...n your current branch, run this:
git tag <tagname>
If you want to include a description with your tag, add -a to create an annotated tag:
git tag <tagname> -a
This will create a local tag with the current state of the branch you are on. When pushing to your remote repo, tags are NO...
C pointer to array/array of pointers disambiguation
... pointer arithmetic to see if the row pointer is out of bounds. Example:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define NUM_ELEM(ar) (sizeof(ar) / sizeof((ar)[0]))
int *
put_off(const int newrow[2])
{
static int mymatrix[3][2];
static int (*rowp)[2] =...
Change MySQL default character set to UTF-8 in my.cnf?
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jQuery - What are differences between $(document).ready and $(window).load?
...ndow).load(function() {
// executes when complete page is fully loaded, including all frames, objects and images
console.log("window is loaded");
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
Query 3.0 version
Breaking change...
A complete solution to LOCALLY validate an in-app receipts and bundle receipts on iOS 7
...urchase library RMStore. I will explain how to verify a transaction, which includes verifying the whole receipt.
At a glance
Get the receipt and verify the transaction. If it fails, refresh the receipt and try again. This makes the verification process asynchronous as refreshing the receipt is asy...
How can I set up an editor to work with Git on Windows?
...mber 2015 (6 years later)
The last release of git-for-Windows (2.5.3) now includes:
By configuring git config core.editor notepad, users can now use notepad.exe as their default editor.
Configuring git config format.commitMessageColumns 72 will be picked up by the notepad wrapper and line-wra...
What does enumerable mean?
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An enumerable property is one that can be included in and visited during for..in loops (or a similar iteration of properties, like Object.keys()).
If a property isn't identified as enumerable, the loop will ignore that it's within the object.
var obj = { key: 'val'...
Nginx与Lua - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ll> make install
因为安装在缺省路径，所以LuaJIT对应的lib，include均在/usr/local目录里。
shell> export LUAJIT_LIB=/usr/local/lib
shell> export LUAJIT_INC=/usr/local/include/luajit-<VERSION>
下面就可以编译Nginx了：
shell> wget http://nginx.org/download/nginx-<VE...