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LaTeX Optional Arguments
How do you create a command with optional arguments in LaTeX?
Something like:
6 Answers
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How can I change the current URL?
...tely, this is only supported in very modern browsers, like Chrome, Safari, and the Firefox 4 beta.
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How can I display just a portion of an image in HTML/CSS?
...age you want to display as a background in a container (td, div, span etc) and then adjust background-position to get the sprite you want.
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Matplotlib: “Unknown projection '3d'” error
I just installed matplotlib and am trying to run one of there example scripts. However I run into the error detailed below. What am I doing wrong?
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Should I use Python 32bit or Python 64bit
...ation. Must I use Python 64bit? What are the differences between the 32bit and 64bit Python versions anyway? Do different Python packages (such as south, django, mysqldb etc) support only 32bit/64bit?
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How long is the SHA256 hash?
...or even a char(64), as the length is always the same, not varying at all.
And the demo :
$hash = hash('sha256', 'hello, world!');
var_dump($hash);
Will give you :
$ php temp.php
string(64) "68e656b251e67e8358bef8483ab0d51c6619f3e7a1a9f0e75838d41ff368f728"
i.e. a string with 64 characters.
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Xcode: What is a target and scheme in plain language?
... it :-) What do they mean in plain English language? I really don't understand the explanation on Apple's website and I need to rename my target and I'm afraid that nothing works after that..
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Git: Show all of the various changes to a single line in a specified file over the entire git histor
I've looked around, and am not sure if this is possible, but here goes:
5 Answers
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What does gcc's ffast-math actually do?
I understand gcc's --ffast-math flag can greatly increase speed for float ops, and goes outside of IEEE standards, but I can't seem to find information on what is really happening when it's on. Can anyone please explain some of the details and maybe give a clear example of how something would chan...
How to specify font attributes for all elements on an html web page?
... When the browser sees the '*' it loops over all HTML elements in the page and apply the CSS to them. Even for elements where the rule doesn't make any sense. Depending on the size of the HTML this can slow the page rendering.
– Cesar Canassa
Oct 16 '10 at 7:37...