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How to center an iframe horizontally?
Consider the following example: ( live demo )
11 Answers
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MySQL - Make an existing Field Unique
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But removes all the duplicates including those outside the columns
– Biasi Wiga
Mar 17 at 12:13
add a comment
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Are querystring parameters secure in HTTPS (HTTP + SSL)? [duplicate]
...o encrypted with SSL. Nevertheless, as this article shows, it isn't a good idea to put sensitive information in the URL. For example:
URLs are stored in web server logs -
typically the whole URL of each
request is stored in a server log.
This means that any sensitive data in
the URL (e.g...
Is there an interactive way to learn Vim? [closed]
Years ago I was looking for a way to learn Vim that didn't involve a wall of text, or scrolling through vimtutor without knowing the commands to do so. I wondered if anything else existed for such a purpose.
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构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...表为例；
对于访问数据库客户端来讲，需要根据用户的ID，定位到需要访问的数据；
数据切分算法，
根据用户的ID做hash操作，一致性Hash，这种方式存在失效数据的迁移问题，迁移时间内服务不可用
维护路由表，路由表中存...
Removing multiple classes (jQuery)
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
How do I design a class in Python?
...ur problem domain. Specifics help clarify the problem. Generics simply elide details.
For each noun ("contact", "paw", "dog", etc.) write down the attributes of that noun and the actions in which that object engages. Don't short-cut this. Every attribute. "Data Set contains 30 Dogs" for example...
Get image data url in JavaScript?
... the original file, but a re-encoded version. If you need the result to be identical to the original, see Kaiido's answer.
You will need to create a canvas element with the correct dimensions and copy the image data with the drawImage function. Then you can use the toDataURL function to get a dat...
Split an NSString to access one particular piece
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@Bobrovsky in the general case, it would be better to validate the string to make sure it is a date. This is just an example that answers the specific question. It's also more generalisable to get any of the three date parts.
– JeremyP
Jun 2...
How to list running screen sessions?
...var/run/screen/S-root/ | grep "NamingConvention". Screens save in the <pid>.<screen_name> format. This is useful for bash scripts. So if you have a screen with name 0000.NamingConvention it'll literally just return the name of the screens you're looking for in an easy to parse format.
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