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How do I iterate through the alphabet?

... addition to string.ascii_lowercase you should also take a look at the ord and chr built-ins. ord('a') will give you the ascii value for 'a' and chr(ord('a')) will give you back the string 'a'. Using these you can increment and decrement through character codes and convert back and forth easily eno...
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Create an array with random values

How can I create an array with 40 elements, with random values from 0 to 39 ? Like 21 Answers ...
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Where does the “flatmap that s***” idiomatic expression in Scala come from?

... a lot of tedious if/then/else code you would write with calls to flatMap (and other higher order functions). This is especially true for Options (see http://tonymorris.github.io/blog/posts/scalaoption-cheat-sheet/) But it applies to other monads as well (although I have to admit, I don't exactly...
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Should I avoid 'async void' event handlers?

I know it is considered generally a bad idea to use fire-and-forget async void methods to start tasks, because there is no track of the pending task and it is tricky to handle exceptions which might be thrown inside such a method. ...
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Is there any way to view the currently mapped keys in Vim?

... You can do that with the :map command. There are also other variants. :nmap for normal mode mappings :vmap for visual mode mappings :imap for insert mode mappings The above list is not complete. Typing :help map in Vim will give you more info. ...
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npm not working after clearing cache

...m was at version 1.3.8 as mentioned in the question. However, in npm 2.8.3 and npm 3.3.0, "clear" is a silent alias for "clean", so it would do the same thing. – Mark Stosberg Aug 20 '15 at 19:59 ...
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Can an input field have two labels?

Mary had a little form, and its fields where labeled just so. Whenever an error crept in, confusion it would sow. 3 Answers...
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Override and reset CSS style: auto or none don't work

...erty should be ignored. In that case, inline-table will still take effect, and as width do not apply to inline elements, that set of properties will not do anything. The second set of properties will simply hide the table, as that's what display: none is for. Try resetting it to table instead: ...
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Setting Corner Radius on UIImageView not working

... you pay the mask creation overhead everyframe. If shouldRasterize is true and your layer changes every frame, you pay the mask overhead and the rasterization overhead. Ideal case is a static (not changing very often) layer with shouldRasterize = true. – jjxtra ...
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How to display double quotes(") Symbol in a TextView?

...racters (eg double quotes) with a backslash : "message \"quote string 1\" and \"quote string 2\" end message" But in views xml (eg layout.xml), you have to use HTML character entities (like ") : "message "quote string 1" and "quote string 2" end messa...