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How can I convert an RGB image into grayscale in Python?
I'm trying to use matplotlib to read in an RGB image and convert it to grayscale.
12 Answers
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Quick Way to Implement Dictionary in C
One of the things which I miss while writing programs in C is a dictionary data structure. What's the most convenient way to implement one in C? I am not looking for performance, but ease of coding it from scratch. I don't want it to be generic either -- something like string->int will do. But I do ...
Ignoring accented letters in string comparison
I need to compare 2 strings in C# and treat accented letters the same as non-accented letters. For example:
6 Answers
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Splitting String with delimiter
I am currently trying to split a string 1128-2 so that I can have two separate values. For example, value1: 1128 and value2: 2, so that I can then use each value separately. I have tried split() but with no success. Is there a specific way Grails handles this, or a better way of doing it?
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How to upper case every first letter of word in a string? [duplicate]
I have a string: "hello good old world" and i want to upper case every first letter of every word, not the whole string with .toUpperCase(). Is there an existing java helper which does the job?
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python numpy ValueError: operands could not be broadcast together with shapes
In numpy, I have two "arrays", X is (m,n) and y is a vector (n,1)
6 Answers
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MIN/MAX vs ORDER BY and LIMIT
...f the following queries, which method would you consider the better one? What are your reasons (code efficiency, better maintainability, less WTFery)...
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How do I change the color of radio buttons?
I mean, a radio button itself consists of a round shape and a dot at the center (when the button is selected). What I want to change is the color of both. Can this be done using CSS?
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How to pass an ArrayList to a varargs method parameter?
Basically I have an ArrayList of locations:
5 Answers
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How can I generate a diff for a single file between two branches in github
I need to generate a diff for a single file that will show the differences between two versions, which are actually tags in github. I then want to send this diff to someone via email so a github URL for the diff would be ideal. The github compare view will allow me to do this for all changed files, ...