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Pandas percentage of total with groupby
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14 Answers
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Array slices in C#
...clude the Linq namespace with using System.Linq;):
byte[] foo = new byte[4096];
var bar = foo.Take(41);
If you really need an array from any IEnumerable<byte> value, you could use the ToArray() method for that. That does not seem to be the case here.
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Understanding how recursive functions work
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edited Sep 5 '14 at 0:49
answered Sep 5 '14 at 0:43
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Different bash prompt for different vi editing mode?
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Fresh bash 4.3 and readline 6.3 have something for you guys.. from the changelog:
4. New Features in Readline
j. New user-settable variable, show-mode-in-prompt, adds a characters to the
beginning of the prompt indicating the cur...
No Persistence provider for EntityManager named
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edited Jun 20 '16 at 3:14
Dave Jarvis
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an...
What is the difference between '/' and '//' when used for division?
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smci
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answered Oct 8 '08 at 17:21
Eli CourtwrightEli ...
Understanding dict.copy() - shallow or deep?
...gt;>> a, b
({1: [1, 2, 3]}, {1: [1, 2, 3]})
>>> a[1].append(4)
>>> a, b
({1: [1, 2, 3, 4]}, {1: [1, 2, 3, 4]})
In contrast, a deep copy will copy all contents by value.
>>> import copy
>>> c = copy.deepcopy(a)
>>> a, c
({1: [1, 2, 3, 4]}, {1: [1,...
Array to Hash Ruby
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a = ["item 1", "item 2", "item 3", "item 4"]
h = Hash[*a] # => { "item 1" => "item 2", "item 3" => "item 4" }
That's it. The * is called the splat operator.
One caveat per @Mike Lewis (in the comments): "Be very careful with this. Ruby expands splats on ...
Undefined reference to static constexpr char[]
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answered Nov 4 '11 at 23:22
Kerrek SBKerrek SB
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Is it possible to get the iOS 5.1 SDK for Xcode 4.2 on Snow Leopard?
I still have Snow Leopard. I have Xcode 4.2 for iOS development. This morning I upgraded my iPhone and iPad to iOS 5.1.
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