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How to atomically delete keys matching a pattern using Redis
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Starting with redis 2.6.0, you can run lua scripts, which execute atomically. I have never written one, but I think it would look something like this
EVAL "return redis.call('del', unpack(redis.call('keys', ARGV[1])))" 0 prefix:[YOUR_...
Escape Character in SQL Server
I want to use quotation with escape character. How can I do?
9 Answers
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Version number comparison in Python
I want to write a cmp -like function which compares two version numbers and returns -1 , 0 , or 1 based on their compared valuses.
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How to document Python code with doxygen [closed]
...hink I remember that Python doesn't have /* .. */ comments, and also has its own self-documentation facility which seems to be the pythonic way to document.
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How to rethrow InnerException without losing stack trace in C#?
...d which may cause an exception. How can I pass the exception to my caller without the wrapper reflection puts around it?
I am rethrowing the InnerException, but this destroys the stack trace.
Example code:
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Printing a variable memory address in swift
Is there anyway to simulate the [NSString stringWithFormat:@"%p", myVar] , from Objective-C, in the new Swift language?
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Difference between addSubview and insertSubview in UIView class
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The only difference is in where the view is added: whether it is the frontmost view (addSubview:), or it is before the 5th subview, (insertSubview:atIndex:) or if it is immediately behind another subview (insertSubview:aboveSubview:).
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java.util.regex - importance of Pattern.compile()?
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The compile() method is always called at some point; it's the only way to create a Pattern object. So the question is really, why should you call it explicitly? One reason is that you need a reference to the Matcher object so you can use its methods, like group(int) to retrie...
Email validation using jQuery
I'm new to jQuery and was wondering how to use it to validate email addresses.
35 Answers
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Download file from an ASP.NET Web API method using AngularJS
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Support for downloading binary files in using ajax is not great, it is very much still under development as working drafts.
Simple download method:
You can have the browser download the requested file simply by using the code below, and this is supported in all browsers, and will obviou...