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Checking for an empty field with MySQL
I've wrote a query to check for users with certain criteria, one being they have an email address.
7 Answers
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How to find the width of a div using vanilla JavaScript?
...ll want to give some other alternatives that may work.
If you are looking for the assigned width (ignoring padding, margin and so on) you could use.
getComputedStyle(element).width; //returns value in px like "727.7px"
getComputedStyle allows you to access all styles of that elements. For exampl...
Prevent linebreak after
...fitted to the content (assuming width:auto;). It can require a clear:left; for certain effects.
display:inline-block; is the "best of both worlds" option. The div is treated as a block element. It responds to all of the margin, padding, and height rules as expected for a block element. However, it ...
How to read last commit comment?
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the %B format was what I needed to not have the commit message indented. And yes, @Juh_, even though git gui doesn't linewrap for you, it's a good idea to use 80column text in commit messages, not line-per-paragraph.
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Is there a way to hide the scroll indicators in a UIScrollView?
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As learnt from Docs,you can even use it for scrollview directly! [scrollview setShowsHorizontalScrollIndicator:NO]; Thanks to @retainCount
– Rajal
Jan 22 '15 at 7:17
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Eclipse JUNO doesn't start
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that fixed it for me:
rm YOUR_WORKSPACE/.metadata/.plugins/org.eclipse.core.resources/.snap
credit:
http://www.metod.si/job-found-still-running-after-platform-shutdown-eclipse/
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HTTP POST and GET using cURL in Linux [duplicate]
...H "Content-Type: application/xml" -X GET http://hostname/resource
POST:
For posting data:
curl --data "param1=value1&param2=value2" http://hostname/resource
For file upload:
curl --form "fileupload=@filename.txt" http://hostname/resource
RESTful HTTP Post:
curl -X POST -d @filename htt...
Checking if form has been submitted - PHP
What is the best way of checking whether or not a form has been submitted to determine whether I should pass the form's variables to my validation class?
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由12306.cn谈谈网站性能技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...IFO、LRU、LFU都是比较经典的换页算法。相关内容参看Wikipeida的缓存算法。
3）缓存的重建和持久化。缓存在内存，系统总要维护，所以，缓存就会丢失，如果缓存没了，就需要重建，如果数据量很大，缓存重建的过程会很慢，这...
How to determine whether an object has a given property in JavaScript
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Object has property:
If you are testing for properties that are on the object itself (not a part of its prototype chain) you can use .hasOwnProperty():
if (x.hasOwnProperty('y')) {
// ......
}
Object or its prototype has a property:
You can use the in operat...