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Why should I use var instead of a type? [duplicate]
...p by another developer( usually a junior ) in the future, who has to spend more time figuring out what a piece of code actually does.
– Alan
Sep 15 '17 at 13:34
2
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Efficient string concatenation in C++
...ing a ton of extra + operations it is not efficient.
Why you can make it more efficient:
You are guaranteeing efficiency instead of trusting a delegate to do it efficiently for you
the std::string class knows nothing about the max size of your string, nor how often you will be concatenating to i...
Setting Objects to Null/Nothing after use in .NET
... This whole business of "don't prematurely optimize" sounds more like "Prefer slow and don't worry because CPUs are getting faster and CRUD apps don't need speed anyway." It may just be me though. :)
– BobbyShaftoe
Dec 20 '08 at 4:42
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Generate random number between two numbers in JavaScript
... While this would work, @Mike, it would be best to point out the more generic version as Francisc has it below :-).
– Raymond Machira
Aug 5 '13 at 14:38
59
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Case statement with multiple values in each 'when' block
...luates the expression a or b first before throwing it into the when. It's more surprising and less easy to handle for the language to have tokens that change behavior based on context, and then you wouldn't be able to use a real or expression on the right side of a when.
– Tay...
What Xcode keyboard shortcuts do you use regularly? [closed]
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138
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Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注IT技能提升
...由于要rewrite一个地址从/mag/xx/xxx/ -> /m/xxx，但原先 /mag/xx/more/ 要保留这就得写一个比较奇特的正则了，尝试了比较多的写法也没成功
最先想到的是：
location ~* ^/mag/[^/]+/[^(more)]+/ {
rewrite ^/mag/[^/]+/(.*) /m/$1 permanent;
}
[]的写法...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注IT技能提升
...由于要rewrite一个地址从/mag/xx/xxx/ -> /m/xxx，但原先 /mag/xx/more/ 要保留这就得写一个比较奇特的正则了，尝试了比较多的写法也没成功
最先想到的是：
location ~* ^/mag/[^/]+/[^(more)]+/ {
rewrite ^/mag/[^/]+/(.*) /m/$1 permanent;
}
[]的写法...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注IT技能提升
...由于要rewrite一个地址从/mag/xx/xxx/ -> /m/xxx，但原先 /mag/xx/more/ 要保留这就得写一个比较奇特的正则了，尝试了比较多的写法也没成功
最先想到的是：
location ~* ^/mag/[^/]+/[^(more)]+/ {
rewrite ^/mag/[^/]+/(.*) /m/$1 permanent;
}
[]的写法...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注IT技能提升
...由于要rewrite一个地址从/mag/xx/xxx/ -> /m/xxx，但原先 /mag/xx/more/ 要保留这就得写一个比较奇特的正则了，尝试了比较多的写法也没成功
最先想到的是：
location ~* ^/mag/[^/]+/[^(more)]+/ {
rewrite ^/mag/[^/]+/(.*) /m/$1 permanent;
}
[]的写法...