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Understanding repr( ) function in Python
...t;> x
'foo'
So the name x is attached to 'foo' string. When you call for example repr(x) the interpreter puts 'foo' instead of x and then calls repr('foo').
>>> repr(x)
"'foo'"
>>> x.__repr__()
"'foo'"
repr actually calls a magic method __repr__ of x, which gives the string...
How to create a UIView bounce animation?
I have the following CATransition for a UIView called finalScoreView , which makes it enter the screen from the top:
4 Ans...
How does bash tab completion work?
...ot of time in the shell lately and I'm wondering how the tab autocomplete works. What's the mechanism behind it? How does the bash know the contents of every directory?
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How do I lowercase a string in Python?
Is there a way to convert a string from uppercase, or even part uppercase to lowercase?
5 Answers
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Convert Iterable to Stream using Java 8 JDK
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There's a much better answer than using spliteratorUnknownSize directly, which is both easier and gets a better result. Iterable has a spliterator() method, so you should just use that to get your spliterator. In the worst case, it's the same code (the default implementat...
How would you compare jQuery objects?
...w DOM elements, e.g.:
if ($(this).parent().get(0) === $('body').get(0))
or
if ($(this).parent()[0] === $('body')[0])
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What open source C++ static analysis tools are available? [closed]
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Oink is a tool built on top of the Elsa C++ front-end. Mozilla's Pork is a fork of Elsa/Oink.
See: http://danielwilkerson.com/oink/index.html
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Rails: Is there a rails trick to adding commas to large numbers?
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You want the number_with_delimiter method. For example:
<%= number_with_delimiter(@number, :delimiter => ',') %>
Alternatively, you can use the number_with_precision method to ensure that the number is always displayed with two decimal places of precision:
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GitHub: What is a “wip” branch?
When I was browsing GitHub repositories I quite often saw "wip" branches (e.g. 3.1.0-wip ). What does "wip" mean?
3 Answer...
How to sum a variable by group
I have a data frame with two columns. First column contains categories such as "First", "Second", "Third", and the second column has numbers that represent the number of times I saw the specific groups from "Category".
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