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Select N random elements from a List in C#
...e probability of selection = (number needed)/(number left)
So if you had 40 items, the first would have a 5/40 chance of being selected. If it is, the next has a 4/39 chance, otherwise it has a 5/39 chance. By the time you get to the end you will have your 5 items, and often you'll have all of them...
How to test an Internet connection with bash?
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20 Answers
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Active
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How to convert int to char with leading zeros?
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100
Try this: select right('00000' + cast(Your_Field as varchar(5)), 5)
It will get the result in ...
Access lapply index names inside FUN
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edited Mar 30 '12 at 21:50
answered Mar 30 '12 at 20:47
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Getting parts of a URL (Regex)
...ers
and anchors e.g.
https://www.google.com/dir/1/2/search.html?arg=0-a&arg1=1-b&arg3-c#hash
^((http[s]?|ftp):\/)?\/?([^:\/\s]+)((\/\w+)*\/)([\w\-\.]+[^#?\s]+)(.*)?(#[\w\-]+)?$
RexEx positions:
url: RegExp['$&'],
protocol:RegExp.$2,
host:RegExp.$3,
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Node.js quick file server (static files over HTTP)
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1140
A good "ready-to-use tool" option could be http-server:
npm install http-server -g
To use it:...
Dynamically load JS inside JS [duplicate]
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kayenkayen
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How can bcrypt have built-in salts?
... in the database, a bcrypt "hash" might look something like this:
$2a$10$vI8aWBnW3fID.ZQ4/zo1G.q1lRps.9cGLcZEiGDMVr5yUP1KUOYTa
This is actually three fields, delimited by "$":
2a identifies the bcrypt algorithm version that was used.
10 is the cost factor; 210 iterations of the key derivatio...
Empty Visual Studio Project?
Is there a way to have an empty Project in Visual Studio 2008 or 2010? I do not mean an empty solution, I mean an empty project in a solution. Basically I have a solution with multiple projects, and I want to add a project to track some static files that are part of the solution but not of any speci...
What is “stdafx.h” used for in Visual Studio?
...afx.h is automatically generated when I start a project in Visual Studio 2010. I need to make a cross-platform C++ library, so I don't/can't use this header file.
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