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How to return a string value from a Bash function
...al on the fact that declare creates local variables inside functions (that info is not given by help declare): "...When used in a function, declare and typeset make each name local, as with the local command, unless the -g option is supplied..."
– init_js
Oct ...
MongoDB: Combine data from multiple collections into one..how?
...ction and you want to have a new collection that has some user demographic info for each comment.
Let's say the users collection has the following fields:
_id
firstName
lastName
country
gender
age
And then the comments collection has the following fields:
_id
userId
comment
created
You woul...
What does the brk() system call do?
...ut brk/sbrk?
Why does calling sbrk(0) twice give a different value?
More info
Internally, the kernel decides if the process can have that much memory, and earmarks memory pages for that usage.
This explains how the stack compares to the heap: What is the function of the push / pop instructions u...
Why does changing 0.1f to 0 slow down performance by 10x?
...
@fig: 1<<11 is for the Underflow Mask. More info here: softpixel.com/~cwright/programming/simd/sse.php
– German Garcia
Feb 26 '14 at 16:29
...
AngularJS ui-router login authentication
..., and upon request, it can resolve an object that represents the essential information about the user's identity. This can be whatever you need, but the essentials would be a display name, a username, possibly an email, and the roles a user belongs to (if this applies to your app). Principal also ha...
User Authentication in ASP.NET Web API
...o as to provide certain specified individuals with the ability to retrieve information from a database but not the ability to change data stored in the datbase, while giving other individuals the ability to change data. Authorization systems provide answers to the questions:
Is user X authorized t...
What is a higher kinded type in Scala?
...e functions, you could shorten that last line from the examples to:
types (informally) String [x] => x [F[x]] => F[String]) // I repeat, this is not valid Scala, and might never be
(On a personal note, I regret ever having talked about "higher-kinded types", they're just types...
How can I extract embedded fonts from a PDF as valid font files?
... which more recently was renamed to mutool. These support the sub-commands info, clean, extract, poster and show. Unfortunatey, the official documentation for these tools isn't up to date (yet). If you're on a Mac using 'MacPorts': then the utility was renamed in order to avoid name clashes with oth...
How to build & install GLFW 3 and use it in a Linux project
...ay need to upgrade your gcc to version 4.7, or the upcoming version 4.8... Info on that here.
Then fix your errors if you typed the program by hand or tried to be "too clever" and something didn't work... Then link it using this monster! g++ main.o -o main.exec -lGL -lGLU -lglfw3 -lX11 -lXxf86vm -lX...
How can I make setuptools install a package that's not on PyPI?
...n "python setup.py develop", it says "writing dependency_links to foo.egg-info/dependency_links.txt", but doesn't actually download and install the package. I'm using a setuptools-based virtualenv if that helps.
– andrei
Aug 18 '10 at 17:31
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