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How to upload a file to directory in S3 bucket using boto
I want to copy a file in s3 bucket using python.
13 Answers
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How to map and remove nil values in Ruby
...t to become the norm very soon.
For example:
numbers = [1, 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.even? }
# => [4, 16, 20]
In your case, as the block evaluates to falsey, simply:
items.filter_map { |x| process_x url }
"Ruby 2.7 adds Enumerable#filter_map" is a good read on the s...
dplyr: “Error in n(): function should not be called directly”
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Michael Bellhouse
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answered Apr 2 '14 at 3:59
mnelmnel
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Approximate cost to access various caches and main memory?
...anyone give me the approximate time (in nanoseconds) to access L1, L2 and L3 caches, as well as main memory on Intel i7 processors?
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Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
...emselves):
: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 pointin...
How to delete a row by reference in data.table?
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edited Nov 23 '18 at 12:47
Henrik
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Error type 3 Error: Activity class {} does not exist
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If list index exists, do X
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edited Dec 12 '16 at 0:03
Dimitris Fasarakis Hilliard
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How many characters can UTF-8 encode?
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136
UTF-8 does not use one byte all the time, it's 1 to 4 bytes.
The first 128 characters (US-A...