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Maintain the aspect ratio of a div with CSS
...in a <div> with height equal to 75% of the width of its container (a 4:3 aspect ratio).
This relies on the fact that for padding :
The percentage is calculated with respect to the width of the generated box's containing block [...] (source: w3.org, emphasis mine)
Padding-bottom values for o...
C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
...“麻烦”？
3。编程中通常碰到段错误的地方有哪些？
4。如何发现程序中的段错误并处理掉？
正文
1。什么是段错误？
下面是来自Answers.com的定义：
A segmentation fault (often shortened to segfault) is a particular error condi...
Storing Data in MySQL as JSON
...
hatef
3,12455 gold badges3434 silver badges3838 bronze badges
answered Aug 25 '10 at 8:26
deceze♦deceze
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How do you run a single test/spec file in RSpec?
...
14 Answers
14
Active
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How do disable paging by swiping with finger in ViewPager but still be able to swipe programmaticall
...wPager and below it I have 10 buttons. By clicking on button, for example #4, the pager goes immediately to page #4 by mPager.setCurrentItem(3); . But, I want to disable the paging by swiping with finger horizontally. Thus, the paging is done ONLY by clicking on the buttons.
So, how I can disabl...
Creating a Radial Menu in CSS
... than the background on the root element).
2015 demo
Screenshots
Chrome 43:
Firefox 38:
IE 11:
Code
The HTML is pretty simple. I'm using the checkbox hack to reveal/ hide the menu.
<input type='checkbox' id='t'/>
<label for='t'>✰</label>
<ul>
<li><...
Difference between Java Enumeration and Iterator
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142
Looking at the Java API Specification for the Iterator interface, there is an explanation of th...
How do I encode/decode HTML entities in Ruby?
...laurana; sudo gem install htmlentities
Successfully installed htmlentities-4.2.4
: jmglov@laurana; irb
irb(main):001:0> require 'htmlentities'
=> []
irb(main):002:0> HTMLEntities.new.decode "&iexcl;I&#39;m highly&nbsp;annoyed with character references!"
=> "¡I'm highly ann...
Haversine Formula in Python (Bearing and Distance between two GPS points)
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243
Here's a Python version:
from math import radians, cos, sin, asin, sqrt
def haversine(lon1, l...
How can I replace text with CSS?
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54
Nice, but that's a change to HTML rather than just CSS.
– mikemaccana
Jan 10 '13 at 15:58
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