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How can I convert an RGB image into grayscale in Python?
...ther reason, he should be able to use the builtin colorsys.rgb_to_yiq() to transform plus a slice to get just the luma channel.
– Silas Ray
Aug 30 '12 at 16:53
36
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How do I calculate percentiles with python/numpy?
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The lambda function lets you transform the data in N before calculating a percentile. Say you actually have a list of tuples N = [(1, 2), (3, 1), ..., (5, 1)] and you want to get the percentile of the first element of the tuples, then you choose key=lamb...
Using sphinx with Markdown instead of RST
...o the RST parser :-).
You can use an existing markdown->XML parser and transform the result (using XSLT?) to the docutils schema.
You could take some existing python markdown parser that lets you define a custom renderer and make it build docutils node tree.
You could fork the existing RST rea...
How can I make XSLT work in chrome?
...an XML document here that is served with a corresponding XSL file . The transformation is left to be executed client-side, without JavaScript.
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Can every recursion be converted into iteration?
... And the bs about semantics??? Really? This is a question on syntactic transformations, and somehow it's became a great way to name drop Dijkstra and imply you know something about the pi-calculus? Let me make this clear: whether one looks at the denotational semantics of a language or some oth...
How to get orientation-dependent height and width of the screen?
...imensions in both portrait and landscape except it reports having a rotate transform:
(gdb) po [[[[UIApplication sharedApplication] keyWindow]
rootViewController] view]
<UILayoutContainerView: 0xf7296f0; frame =
(0 0; 320 480); transform = [0, -1, 1, 0, 0, 0]; autoresize = W+H;
lay...
How do I concatenate or merge arrays in Swift?
... Returns an array containing the concatenated results of calling the given transformation with each element of this sequence.
func flatMap<SegmentOfResult>(_ transform: (Self.Element) throws -> SegmentOfResult) rethrows -> [SegmentOfResult.Element] where SegmentOfResult : Sequence
Th...
Hibernate Criteria returns children multiple times with FetchType.EAGER
... over the place. Then I run around and fix all my DAOs by appending result transformers and whatnot. User experience == very negative. I understand that some people absolutely love having duplicates for bizarre reasons, but why can't I say "fetch these objects FASTER but do not bug me with duplicate...
How is null + true a string?
...d, the following code:
string b = null + true;
Console.WriteLine(b);
is transformed into this by the compiler:
Console.WriteLine(true);
The reasoning behind this "optimization" is a bit weird I must say, and does not rhyme with the operator selection I would expect.
Also, the following code:...
Using success/error/finally/catch with Promises in AngularJS
...4 maybe it is better to use the regular promise methods then and catch and transform the response within those methods and return the promise of that transformed response.
I am showing the same example with both approaches and a third in-between approach:
success and error approach (success and er...