0 apr meaning

border:1px solid Rgba (0,0,0,0.1) means that the bounding rectangle of the set element is 1 pixels wide, the solid line, and the color is expressed using RGBA.Where Rgba is an attribute in the CSS3,The first 3 digits of the RGBA brackets represent the RGB values of red green blue Three colors, 0-255, and the last one is to set the transparency of this color, which is the alpha value. The range is from 0 to

Undefined is a global property that indicates that no assignment has been defined or defined.Void is a unary operator that returns undefined no matter what parameters are passed in.The void operator is defined in ECMAScript V1, and undefined is defined in ECMAScript v5. We know that undefined is not a reserved word for JavaScript, so we can use undefined as the variable name. At this point, the undefined we define will affect the use of undefined as a judgment place . Look at the following examp

it's better to invoke a script with void (0)or Several ways to open a new window link 1.window.open (' url ') 2. Use Custom function ------------------------------------------------------------------------------- If it is a #, there will be jumps to the top of the situation, the personal collection of several solutions: 1:2:3:4:5: ------------------------------------------------------------------------------- The above content

Label:See an index today, create INDEX index_name tableanme (colname,0), very strange, never seen before. After testing the discovery is a thing relative to the joint index, there is no meaning, is built wrong.Sql> select * from V$version;BANNER--------------------------------------------------------------------------------Oracle Database 11g Enterprise Edition Release 11.2.0.1.0-64bit ProductionPL/SQL Rele

The meaning of shell variable $#,[email protected],$0,$1,$2 in Linux is explained:Variable Description:$$The PID of the shell itself (ProcessID)$!PID of the Shell's last running background process$?End code of the last Run command (return value)$-Flag at a glance using the SET command$*All parameter lists. such as "$*" in the Case of "" ", in the form of" $ $ ... $n "output all parameters.[Email protected]A

(*b)[4];//数组指针b=c;//将数组c中元素赋给数组afor(inti=0;i{a[i]=c[i];}//输出看下结果cout//输出2就对cout//输出3就对return 0;}Note: The array pointer is defined, the pointer to the first address of the array, the pointer must be given an address, it is easy to make the mistake is, do not give B address, directly with (*B) [i]=c[i] to the array B element assignment, when the array pointer does not know where to point, debugging may be c

I'd like to use Ajax for all the usual code like this:But what is the meaning of void (0) here?In JavaScript, Void is an operator that specifies that an expression is evaluated but does not return a value.The void operator uses the following format:1. javascript:void (expression)2. Javascript:void expressionExpression is a standard of Javascript to evaluate. Parentheses on the outside of the expression are

Linux Medium Variable $#,[email protected],$0,$1,$2,$*,$$,$? the meaningLet's start by writing a simple script that will explain the meaning of each variable after execution.The script reads as follows:[email protected] ~]# cat Test.txt#!/bin/bashecho "number:$#" echo "Scname:$0" echo "First:" echo "Second:$2" echo " Argume:[email protected] "echo" Show Parm list

1. Create a simple script variable:Vim variable2. Modify the contents as follows:#!/bin/SHEcho "number:$#"Echo "scname:$0"Echo "First : $"Echo "second:$2"Echo "Argume:[email protected]"Echo "Show Parm list:$*"Echo "Show Process id:$$"Echo "Show Precomm stat: $?"3. Execute the Script./variableThe meaning of some parameters in a Linux shell script: $# is the number of arguments passed to the script. The name

Original URL: http://dadekey.blog.51cto.com/107327/119938let's start by writing a simple script that will explain the meaning of each variable after execution .# Touch Variable# VI VariableThe script reads as follows:#!/bin/shecho "number:$#"echo "Scname:$0"echo "First: $ $"echo "Second:$2"echo "Argume:[email protected]"echo "Show Parm list:$*"echo "Show Process id:$$"echo "Show Precomm stat: $?"Save Exit a

Public classTest { Public Static voidMain (string[] args) {//under normal circumstances, the corresponding ASCII code is stored in the 0,TP . CharTP = ' 0 '; System.out.println ((int) TP); //added \ means that the following 0 is an escape character, for special handling, this escape means that 0 is not the same

#!/bin/bash#Created by Ley on 2014-11-14#Testing the Paramtersecho "The Compleate list is%s\n" "$$"echo "The Compleate list is%s\n" "$!"echo "The Compleate list is%s\n" "$?"echo "The Compleate list is%s\n" "$*"echo "The Compleate list is%s\n" "[Email protected]"echo "The Compleate list is%s\n" "$#"echo "The Compleate list is%s\n" "$ $"echo "The Compleate list is%s\n" "$"echo "The Compleate list is%s\n" "$ $"the meaning of shell variable $#,[email prot

Original URL: http://www.cnblogs.com/fhefh/archive/2011/04/15/2017613.htmlThe meaning of shell variable $#,[email protected],$0,$1,$2 in Linux is explained:Variable Description:$$The PID of the shell itself (ProcessID)$!PID of the Shell's last running background process$?End code of the last Run command (return value)$-Flag at a glance using the SET command$*All parameter lists. such as "$*" in the Case of

Title: Explanation Code (n (n-1)) ==0 specific meaning1) (ab) Meaning of ==0The binary representation of A and B in the same location will never be 1.2) N and n-1 if the least significant bit of n is 1, minus 1 is 0, the remainder is the same and does not meet the requirements. The least significant bit of n is 0, minu

Javascript: void (0) is often used in javascript. do you know this is contained? in Javascript, void is an operator that specifies to calculate an expression but does not return a value, this article introduces the true meaning of javascript: void (0) in Javascript. For more information, see if void is an operator in javascript. this operator specifies that an ex

Javascript: void (0) is often used in javascript. Do you know this is contained? In Javascript, void is an operator that specifies to calculate an expression but does not return a value, this article introduces the true meaning of javascript: void (0) in Javascript. For more information, see if void is an operator in javascript. This operator specifies that an ex

Idea: Preliminary view it is difficult to analyze the meaning of the expression at a glance, we might like to analyze the example, assuming that n = 5, the binary is represented as 101, then n-1 = 4, the binary is expressed as, 5 4 = 101 100 = 100 = 4! = 0, let's look at more examples below5 4 101 - 4 6 5 the 101 4 7 6 111 the 6 8 7 + 0111 0We will find that to make the expression equal to

(PTR); return 0; }because Goto does not conform to the structure of software engineering, and it is possible to make the code difficult to understand, so many people do not advocate the use of this time, you can use Do{}while (0) for unified management:int foo () { somestruct* ptr = malloc (...); do{ dosomething ...; if (Error) {break ; } DoSomet

do{...} The meaning and usage of while (0)On October 9, +, in C language, language learning, by sponge The Linux kernel and some other open source code often encounter such code: do{... } while (0) This code is not a loop at a glance, do. While the surface is meaningless here, why use it so much? In fact, do{...} while (0