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Keep only first n characters in a string?
Is there a way in JavaScript to remove the end of a string?
7 Answers
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parseInt vs unary plus, when to use which?
What are the differences between this line:
5 Answers
5
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How to get the first element of an array?
How do you get the first element from an array like this:
31 Answers
31
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leading zeros in rails
I have fields hr and min , both integers in my application. For hr field, if the user enters "1" I would like Rails to automatically pad it to "01" before saving it to the database. Also for the min field if the user enter "0" it should put in as "00".
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Does opacity:0 have exactly the same effect as visibility:hidden
If so, does it effectively deprecate the visibility property?
9 Answers
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Paging UICollectionView by cells, not screen
I have UICollectionView with horizontal scrolling and there are always 2 cells side-by-side per the entire screen. I need the scrolling to stop at the begining of a cell. With paging enabled, the collection view scrolls the whole page, which is 2 cells at once, and then it stops.
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How to make rounded percentages add up to 100%
Consider the four percentages below, represented as float numbers:
17 Answers
17
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How to change colors of a Drawable in Android?
I'm working on an android application, and I have a drawable that I'm loading up from a source image. On this image, I'd like to convert all of the white pixels to a different color, say blue, and then cache the resultant Drawable object so I can use it later.
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What's the algorithm to calculate aspect ratio?
I plan to use it with JavaScript to crop an image to fit the entire window.
18 Answers
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Reading an Excel file in python using pandas
I am trying to read an excel file this way :
8 Answers
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