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Regex to match a digit two or four times
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There's no specific syntax for that, but there are lots of ways to do it:
(?:\d{4}|\d{2}) <-- alternation: four digits or two
\d{2}(?:\d{2})? <-- two digits, and optionally two more
(?:\d{2}){1,2} <-- two digits, times one or two
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What's the difference between “Architectures” and “Valid Architectures” in Xcode Build Settings?
... building with your codebase.
So maybe you only want to build your binary for armv7s, but the same source code would compile fine for armv7 and armv6. So VALID_ARCHS = armv6 armv7 armv7s, but you set ARCHS = armv7s because that's all you actually want to build with your code.
Or, in Apple-ese:
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Typical AngularJS workflow and project structure (with Python Flask)
....py
|-- static
|-- css
|-- img
|-- js
|-- templates
And as btford mentioned, if you are doing an Angular app, you'll want to focus on using Angular client-side templates and stay away from server-side templates. Using render_template('index.html') will cause Flask to interpret your ang...
Merge two Git repositories without breaking file history
...ry. I've found many descriptions of how to do this using a subtree merge (for example Jakub Narębski's answer on How do you merge two Git repositories? ) and following those instructions mostly works, except that when I commit the subtree merge all of the files from the old repositories are rec...
How to loop through all but the last item of a list?
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for x in y[:-1]
If y is a generator, then the above will not work.
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How do you specify a different port number in SQL Management Studio?
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I just chased my tail for an hour trying to figure out how to give the port. Nowhere on MSDN. Stack Overflow to the rescue again!
– Christo
Jun 28 '11 at 12:23
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OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
...sy_list_t *request_list_node，用于将easy_request_t串起来
easy_list_for_each_entry_safe(r, rn, request_list, request_list_node)
{
//r指向链表中第一个easy_request_t元素
//rn指向链表中第二个easy_request_t元素
}
这里用到easy_list_for_each_entry_safe和easy_list_e...
Newline in JLabel
...o leave it as <br>. It's called a void tag. <br /> still works for backwards compatibility.
– gsingh2011
Apr 27 '12 at 3:50
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Custom numeric format string to always display the sign
Is there any way I can specify a standard or custom numeric format string to always output the sign, be it +ve or -ve (although what it should do for zero, I'm not sure!)
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How do I make the return type of a method generic?
...nd "true" or "false" as the configuration value, I'd like to return a bool for example.
7 Answers
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