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Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
...ents themselves):
:peanut :butter :and :jelly
0 1 2 3 4
4 is still within the array, just barely; if you request 0 elements, you get the empty end of the array. But there is no index 5, so you can't slice from there.
When you do index (like array[4]), you are ...
Adding a new array element to a JSON object
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242
JSON is just a notation; to make the change you want parse it so you can apply the changes to ...
Try/Catch block in PHP not catching Exception
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12 Answers
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How do you update Xcode on OSX to the latest version?
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283
Open up App Store
Look in the top right for the updates section (may also be in lefthand co...
How do I pass an extra parameter to the callback function in Javascript .filter() method?
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edited Oct 13 '11 at 19:29
answered Oct 13 '11 at 19:16
F...
How do I choose grid and block dimensions for CUDA kernels?
...un. They can be roughly summarized as:
Each block cannot have more than 512/1024 threads in total (Compute Capability 1.x or 2.x and later respectively)
The maximum dimensions of each block are limited to
[512,512,64]/[1024,1024,64] (Compute 1.x/2.x or later)
Each block cannot consume more than 8k/...
Apache Spark: map vs mapPartitions?
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122
What's the difference between an RDD's map and mapPartitions method?
The method map conver...
How to iterate through two lists in parallel?
... Python 3, zip
returns an iterator of tuples, like itertools.izip in Python2. To get a list
of tuples, use list(zip(foo, bar)). And to zip until both iterators are
exhausted, you would use
itertools.zip_longest.
Python 2
In Python 2, zip
returns a list of tuples. This is fine when foo and bar are...
How many files can I put in a directory?
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21 Answers
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