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动态追踪（Dynamic Tracing）技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
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最后一个例子是，我们在某一次上线操作之后，在线上最新的火焰图中观察到正则表达式的编译操作占用了很多 CPU 时间，但其实我们已经在线上启用了正则编译结果的缓存。很显然，我们业务系统中用到的正则表达式的数量...
How can I check if a var is a string in JavaScript?
... For example: if(myVar.toUpperCase) alert('I am a string');? See: jsfiddle.net/tb3t4nsx
– ingredient_15939
Mar 31 '15 at 15:39
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How to install mongoDB on windows?
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Run MongoDB
Warning:
Do not make mongod.exe visible on public networks without running in
“Secure Mode” with the auth setting. MongoDB is designed to be run in
trusted environments, and the database does not enable “Secure Mode”
by default.
Set up the MongoDB envir...
How can I reorder my divs using only CSS?
...(works for IE10+) – use Flexbox's order property:
Demo: http://jsfiddle.net/hqya7q6o/596/
#flex { display: flex; flex-direction: column; }
#a { order: 2; }
#b { order: 1; }
#c { order: 3; }
<div id="flex">
<div id="a">A</div>
<div id="b">B</div>
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Failed to instantiate module [$injector:unpr] Unknown provider: $routeProvider
...wered Aug 28 '13 at 7:34
Scotty.NETScotty.NET
11.9k44 gold badges3535 silver badges4949 bronze badges
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MemoryCache does not obey memory limits in configuration
I’m working with the .NET 4.0 MemoryCache class in an application and trying to limit the maximum cache size, but in my tests it does not appear that the cache is actually obeying the limits.
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The builds tools for v120 (Platform Toolset = 'v120') cannot be found
...012 on windows 8 x64
aparantly this is caused by msbuild being moved into .net but I havn't seen how to fix it yet.
16 Answ...
How to set input type date's default value to today?
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for .net users: DateTime.Today.ToString("yyyy-MM-dd")
– dvdmn
May 14 '14 at 12:19
3
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How to echo with different colors in the Windows command line
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This is a self-compiled bat/.net hybrid (should be saved as .BAT) that can be used on any system that have installed .net framework (it's a rare thing to see an windows without .NET framework even for the oldest XP/2003 installations) . It uses jscript....
How can you use an object's property in a double-quoted string?
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@Joey has a good answer. There is another way with a more .NET look with a String.Format equivalent, I prefer it when accessing properties on objects:
Things about a car:
$properties = @{ 'color'='red'; 'type'='sedan'; 'package'='fully loaded'; }
Create an object:
$car = New-Obj...