absolute | 易学教程

#include absolute path syntax in c/c++

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For some reason, I need to use the absolute path in #include for my system. Is using #include "D:\temp\temp_lib\temp.h" acceptable? I have tried these different usage and it all seems to work. #include "D:\temp\temp_lib\temp.h" #include "D:\\temp\\temp_lib\\temp.h" #include "D:/temp/temp_lib/temp.h" I just want to know which one should I use? I am using MSVC 2005. I'm wondering if all three will still work in Linux or other environment. I was expecting #1 to be an error during compilation, but I did not get any. Anyone has any idea why that is? Jim Balter Every implementation I'm aware of, and

CSS position属性和实例应用

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目前几乎所有主流的浏览器都支持position属性（"inherit"除外，"inherit"不支持所有包括IE8和之前版本IE浏览器，IE9、IE10还没测试过），以下是w3school对position五个值的解释：其中absolute和relative是最常用的，fixed用得也比较多（其中IE6并不支持fixed）。 1、absolute（绝对定位） absolute是生成觉对定位的元素，脱离了文本流（即在文档中已经不占据位置），参照浏览器的左上角通过top,right,bottom,left（简称TRBL）定位。可以选取具有定位的父级对象（下文将说到relative与absolute的结合使用）或者body坐标原点进行定位，也可以通过z-index进行层次分级。absolute在没有设定TRBL值时是根据父级对象的坐标作为始点的，当设定TRBL值后则根据浏览器的左上角作为原始点。具体案例如下： <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv=

详解CSS position属性

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position是CSS中非常重要的一个属性，通过position属性，我们可以让元素相对于其正常位置，父元素或者浏览器窗口进行偏移。postion也是初学者容易搞不清楚状况的一个属性，本文将从最基础的知识讲起，谈谈关于positon属性的一些理论与应用。基础知识 postion属性我们成为定位，它有4个不同类型的定位，这些类型会影响元素的生成方式，下面我们详细说明position属性。 position四种类型（1）static static是position属性的默认值，默认情况下，块级元素和行内元素按照各自的特性进行显示（2）relative relative翻译成中文称相对定位，设置了这个属性后，元素会根据top，left，bottom，right进行偏移，关键点是它原本的空间仍然保留。我们看下面例子： HTML代码 1 <div class="relative"> 2 </div> 3 <div></div> CSS代码 1 div { background: #0094ff; width: 250px; height: 100px; } 2 .relative { background: #ff6a00; position: relative; width: 200px; height: 100px; top: 20px; left: 50px; } 效果图

Bash: retrieve absolute path given relative

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问题 Is there a command to retrieve the absolute path given the relative path? For example I want $line to contain the absolute path of each file in dir ./etc/ find ./ -type f | while read line; do echo $line done 回答1: use: find $(pwd)/ -type f to get all files or echo $(pwd)/$line to display full path (if relative path matters to) 回答2: Try realpath . ~ $ sudo apt-get install realpath # may already be installed ~ $ realpath .bashrc /home/username/.bashrc To avoid expanding symlinks, use realpath

css实现三角形

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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <style type="text/css"> .triangle_border_up{ display:block; width:0; height:0; border-width:0 10px 10px; border-style:solid; border-color:transparent transparent #fc0;/*透明透明黄*/ position:absolute; top:0px; left:0px; } .triangle_border_down{ display: block; width: 0; height: 0; border-width: 9px 9px 0; border-style: solid; border-color: #fc0 transparent transparent; position: absolute; top: 16px; left: 10%; } .triangle_border_left{ display:block; width:0; height:0; border-width:8px 8px 8px 0; border-style

PHP: Get absolute path from absolute URL

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问题 I have an absolute path of a file, Is there a way to get the file absolute path http://domainname/rootfolder/filename.php and I wanna get something like /home/domainname/public_html/foldername/filename.php 回答1: You can use the parse_url function to get the local part of the URL. Converting that into a file path then requires that you know where the document root of the webserver is. If it is the same server as the one the page is running on, then you can usually get that from $_SERVER[

Absolute file path for java script

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问题 I have a small javascript library written by myself. I want to reference it in my web application, but it doesn't work <script src='file:\\C:\Path\To\Script\Script.js'></script> Is it possible to reference javascript when all you know is the absolute path? 回答1: The file: url needs 3 forward slashes, and the path also needs forward slashes: <script src='file:///C:/Path/To/Script/Script.js'></script> This will ofcourse only work if you load the script within a html-file on your disk that's

How to center absolute div horizontally using CSS?

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I've a div and want it to be centered horizontally - although I'm giving it margin:0 auto; it's not centered... .container { position: absolute; top: 15px; z-index: 2; width:40%; max-width: 960px; min-width: 600px; height: 60px; overflow: hidden; background: #fff; margin:0 auto; } You need to set left: 0 and right: 0 . This specifies how far to offset the margin edges from the sides of the window. Like 'top', but specifies how far a box's right margin edge is offset to the [left/right] of the [right/left] edge of the box's containing block. Source: http://www.w3.org/TR/CSS2/visuren.html

鼠标滑过效果

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引入css3.css , jquery.js , modernizr.js 　公用 js $('[href=#]').click(function () { return false; }); css html *,html *:before,html *:after {box-sizing:border-box;-webkit-transition:0.5s;transition:0.5s;text-align:center;} [class^="btn-"] {position:relative;display:block;margin:20px auto;width:100%;height:80px;max-width:250px;overflow:hidden;border:1px solid currentColor;} *:before,*:after {z-index:-1;} a {text-decoration:none;} @-webkit-keyframes criss-cross-left {0% {left:-20px;} 50% {left:50%;width:20px;height:20px;} 100% {left:50%;width:375px;height:375px;}}@keyframes criss-cross-left {0%

jQueryUI slider: absolutely positioned element & parent container height

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问题 I have an example on http://jsfiddle.net/SsYwH/ In case it don't work HTML: <div class="container"> <div class="absolute"> Testing absolute<br /> Even more testing absolute<br /> </div> A little test<br /> </div> CSS: .container { background: green; } .absolute { position: absolute; background: red; } Problem I use jQuery to create a slider-effect. To do that I need to set position absolute. The red block in my code is the position absolute slider. The green block is the container. I still