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Why is std::map implemented as a red-black tree?
...bly the two most common self balancing tree algorithms are Red-Black trees and AVL trees. To balance the tree after an insertion/update both algorithms use the notion of rotations where the nodes of the tree are rotated to perform the re-balancing.
While in both algorithms the insert/delete operat...
Accessing last x characters of a string in Bash
...of string:
${string: -3}
or
${string:(-3)}
(mind the space between : and -3 in the first form).
Please refer to the Shell Parameter Expansion in the reference manual:
${parameter:offset}
${parameter:offset:length}
Expands to up to length characters of parameter starting at the character
spe...
How to configure XAMPP to send mail from localhost?
...d mail from localhost.
for example you can configure C:\xampp\php\php.ini and c:\xampp\sendmail\sendmail.ini for gmail to send mail.
in C:\xampp\php\php.ini find extension=php_openssl.dll and remove the semicolon from the beginning of that line to make SSL working for gmail for localhost.
in php....
How to install PostgreSQL's pg gem on Ubuntu?
...ting extended state information... Done (Reading database ... 166183 files and directories currently installed.) Removing bison ... Removing libnss3-dev ... Removing libnspr4-dev ... Removing libqt4-core ... Removing libqt4-test ... Removing libsqlite3-dev ... Processing triggers for man-db ..
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“git rm --cached x” vs “git reset head -- x”?
...
There are three places where a file, say, can be - the tree, the index and the working copy. When you just add a file to a folder, you are adding it to the working copy.
When you do something like git add file you add it to the index. And when you commit it, you add it to the tree as well.
It ...
How to extract a git subdirectory and make a submodule out of it?
I started a project some months ago and stored everything within a main directory.
In my main directory "Project" there are several subdirectories containing different things:
Project/paper contains a document written in LaTeX
Project/sourcecode/RailsApp contains my rails app.
...
Timeout on a function call
I'm calling a function in Python which I know may stall and force me to restart the script.
18 Answers
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Difference Between One-to-Many, Many-to-One and Many-to-Many?
... so this is probably a trivial question but I'm having trouble visualizing and understanding the differences and when to use each. I'm also a little unclear as to how concepts like uni-directional and bi-directional mappings affect the one-to-many/many-to-many relationships. I'm using Hibernate righ...
Join/Where with LINQ and Lambda
I'm having trouble with a query written in LINQ and Lambda. So far, I'm getting a lot of errors here's my code:
9 Answers
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Good introduction to the .NET Reactive Framework [closed]
Aside from the Microsoft documentation, is there a good introduction and tutorial to the Microsoft Reactive (Rx) framework?
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