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Round a Floating Point Number Down to the Nearest Integer?
...YS want to round down the variable, regardless of how close it is to the next integer up. Is there a way to do this?
12 Ans...
Is it possible to use 'else' in a list comprehension? [duplicate]
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The syntax a if b else c is a ternary operator in Python that evaluates to a if the condition b is true - otherwise, it evaluates to c. It can be used in comprehension statements:
>>> [a if a else 2 for a in [0,1,0,3]]
[2, 1...
Scala: List[Future] to Future[List] disregarding failed futures
..., and it's not uncommon for one of those futures to fail (they are making external web service requests). Instead of having to retry all of them in the event that one of them fails, I'd like to be able to get at the ones that succeeded and return those.
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adding x and y axis labels in ggplot2
How do I change the x and y labels on this graph please?
1 Answer
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What are the aspect ratios for all Android phone and tablet devices?
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In case anyone wanted more of a visual reference:
Decimal approximations reference table:
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How do I upgrade PHP in Mac OS X?
...y want to check out Marc Liyanage's PHP package. It comes in a nice Mac OS X installer package that you can double-click. He keeps it pretty up to date.
http://php-osx.liip.ch/
Also, although upgrading to Snow Leopard won't help you do PHP updates in the future, it will probably give you a newer v...
How do you get a directory listing sorted by creation date in python?
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files.sort(key=os.path.getctime)
The list of files you could get, for example, using glob as shown in @Jay's answer.
old answer
Here's a more verbose version of @Greg Hewgill's answer. It is the most conforming to the question requirements. It makes a distinction between creation and modifica...
Difference between single and double square brackets in Bash
I'm reading bash examples about if but some examples are written with single square brackets:
6 Answers
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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 to invert an image:
var context = document.getElementById('myCanvas').getContext('2d');
// Get the CanvasPixelArray from the given coordinates and dimensi...
What's the state of the art in email validation for Rails?
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With Rails 3.0 you can use a email validation without regexp using the Mail gem.
Here is my implementation (packaged as a gem).
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