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Short description of the scoping rules?
...olution, from Learning Python, 3rd. Ed.. (These rules are specific to variable names, not attributes. If you reference it without a period, these rules apply.)
LEGB Rule
Local — Names assigned in any way within a function (def or lambda), and not declared global in that function
Enclosing-funct...
What is a “context bound” in Scala?
One of the new features of Scala 2.8 are context bounds. What is a context bound and where is it useful?
4 Answers
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Latest jQuery version on Google's CDN
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UPDATE 7/3/2014: As of now, jquery-latest.js is no longer being updated.
From the jQuery blog:
We know that http://code.jquery.com/jquery-latest.js is abused
because of the CDN statistics
showing it’s the most popular file. That wouldn’t be the case if it
was only bei...
how do you push only some of your local git commits?
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Assuming your commits are on the master branch and you want to push them to the remote master branch:
$ git push origin master~3:master
If you were using git-svn:
$ git svn dcommit master~3
In the case of git-svn, you could also use HEAD~3, since it is expect...
Drawing Isometric game worlds
...antage for the "zig-zag" technique for mapping the tiles to the screen can be said that the tile's x and y coordinates are on the vertical and horizontal axes.
"Drawing in a diamond" approach:
By drawing an isometric map using "drawing in a diamond", which I believe refers to just rendering the ma...
How do you print in a Go test using the “testing” package?
I'm running a test in Go with a statement to print something (i.e. for debugging of tests) but it's not printing anything.
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Is it safe to get values from a java.util.HashMap from multiple threads (no modification)?
There is a case where a map will be constructed, and once it is initialized, it will never be modified again. It will however, be accessed (via get(key) only) from multiple threads. Is it safe to use a java.util.HashMap in this way?
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Hide/Show Column in an HTML Table
I have an HTML table with several columns and I need to implement a column chooser using jquery. When a user clicks on a checkbox I want to hide/show the corresponding column in the table. I would like to do this without attaching a class to every td in the table, is there a way to select an entir...
What are the rules about using an underscore in a C++ identifier?
It's common in C++ to name member variables with some kind of prefix to denote the fact that they're member variables, rather than local variables or parameters. If you've come from an MFC background, you'll probably use m_foo . I've also seen myFoo occasionally.
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How to read a text file reversely with iterator in C#
I need to process a large file, around 400K lines and 200 M. But sometimes I have to process from bottom up. How can I use iterator (yield return) here? Basically I don't like to load everything in memory. I know it is more efficient to use iterator in .NET.
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