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What is tail call optimization?
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Tail-call optimization is where you are able to avoid allocating a new stack frame for a functio...
How do I keep track of pip-installed packages in an Anaconda (Conda) environment?
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conda-env now does this automatically (if pip was installed with conda).
You can see how this ...
SignalR - Sending a message to a specific user using (IUserIdProvider) *NEW 2.0.0*
.... This depends on how you identify a user in your application.
In SignalR 2.0, this is done by using the inbuilt IPrincipal.Identity.Name, which is the logged in user identifier as set during the ASP.NET authentication.
However, you may need to map the connection with the user using a different id...
Make footer stick to bottom of page correctly [duplicate]
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215
The simplest solution is to use min-height on the <html> tag and position the <footer...
How to find out which package version is loaded in R?
I am in a process of figuring out how to use my university cluster. It has 2 versions of R installed. System wide R 2.11 (Debian 6.0) and R 2.14.2 in non-standard location.
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How do I clone a specific Git branch? [duplicate]
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edited Jul 26 '19 at 21:43
David Riott
1555 bronze badges
answered Dec 15 '09 at 23:09
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Automatic post-registration user authentication
We're building a business app from the ground up in Symfony 2, and I've run into a bit of a snag with the user registration flow: after the user creates an account, they should be automatically logged in with those credentials, instead of being immediately forced to provide their credentials again.
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Get a pixel from HTML Canvas?
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There's a section about pixel manipulation in the W3C documentation.
Here's an example on how t...
Count all occurrences of a string in lots of files with grep
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cat * | grep -c string
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Why should I use a semicolon after every function in javascript?
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Semicolons after function declarations are not necessary.
The grammar of a FunctionDeclaration...