ruby Assignment Notes

Tip: If reproduced please specify the author Small Game And provenance

ruby is very flexible, because of the flexibility so that we sometimes puzzled why do it in the end, ruby assignment should be noted there are many places

1. Array element assignment, in fact, an array assignment of the [] is also a function, put it when the function can be treated, if there are two parameters, then the form of him is

arr [x] = y is equivalent to arr. [] (x, y), if the three parameters, then it is in the form arr [x, y] = z is equivalent to arr. [] (x, y, z) other analogy

2. Parallel assignment, if there are multiple values to a left-right values, then the right value as an array with the value assigned to the left

a = 1, 2, 3 is equivalent to a = [1, 2, 3], to prevent this can be done a, = 1, 2, 3, then a = 1 a

3. When there are multiple left-value, a right value, then the ruby on the attempt to put the right value of expanded value assigned to the left, when an array of values to a number of left-right values, then disassemble the array then assign

分类:Ruby 时间:2009-03-07 人气:441
分享到:
blog comments powered by Disqus

相关文章

  • JavaScript remove the same array element 2010-09-02

    <script language="javascript" type="text/javascript"> function init() { var arr = new Array('a','b','a','d','c','d'); for(var i = 0; i < arr.length; i++) { for(var j = i+1; j < arr.length; j++) { if(arr[i] == arr[j]) { arr

  • javascript remove element Array built-in objects 2011-05-30

    In the javascript in, Array object does not provide delete method to delete the array, and some people will say there is a js in their own way to delete an array element delete, delete but you did not change after the length of the array, this is not

  • javascript array of Array objects 2010-04-23

    new Array () new Array (len) new Array ([item0, [item1, [item2 ,...]]] Method using an array of objects: var objArray = new Array (); objArray.concact ([item1 [, item2 [,....]]]------------------- objArray the parameter list to connect to the back of

  • Array. Parameter array 2011-04-10

    Array and Parameter arrays Arguments is an object but not an array in a function object arguments instanceof Array: false arguments instanceof Object: true When the parameters array passed to the function, argements has only one element Passed to the

  • php array multidimensional array 2011-05-27

    On the array: PHP in the array is complex, and many other high-level language than in the array is more flexible. Array is an ordered array of variables, where each variable is called an element. Number or array can be associated, that is, the elemen

  • php function array_filter () filter to remove empty php array empty array _php 2010-05-15

    Before judging whether the array element is empty, the general use of foreach, because the more specific application is to foreach, in fact, if a simple air filter array php, you can use the php function array_filter (). array array_filter (array [,

  • php function array_filter () filter to remove empty _php empty array php array _ Array reset sequence of keys 2010-05-15

    Before judging whether the array element is empty, the general use of foreach, because the more specific application is to foreach, in fact, if a simple air filter array php, you can use the php function array_filter (). array array_filter (array [,

  • JavaScript is created in the Array and Array and Application Map 2010-10-10

    JavaScript has always been to create an array of several ways, each creating different ways, JavaScript is created in the map and use of knowledge is not very clear, but fortunately, the weekend saw their point of information and wrote a few small ex

  • JavaScript object and array json array of species comparison 2010-03-23

    <script type="text/javascript"> var json ={ses:[[1,1],[2,2]],tes:[[3,3],[4,4]]}; for(var j in json){ alert(j); for(var key in json[j]){ alert(json[j][key]); } } // Print order :ses/1,1/2,2/tes/3,3/4,4 </script> Personal Understanding

  • Parallel assignment in Ruby 2011-05-24

    Allowed parallel assignment in Ruby Such as: a, b = 8,9 # a = 8, b = 9 a, b = b, a # ab value of the exchange o, p, q = [1,2,3] And the method in Ruby that allows multiple return values ​​(which is C / C + + / Java are different), then parallel assig

iOS 开发

Android 开发

Python 开发

JAVA 开发

开发语言

PHP 开发

Ruby 开发

搜索

前端开发

数据库

开发工具

开放平台

Javascript 开发

.NET 开发

云计算

服务器

Copyright (C) codeweblog.com, All Rights Reserved.

CodeWeblog.com 版权所有 黔ICP备15002463号-1

processed in 0.197 (s). 12 q(s)