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How to map and remove nil values in Ruby
... and I'd expect it 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 g...
Consistency of hashCode() on a Java string
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102
I can see that documentation as far back as Java 1.2.
While it's true that in general you sho...
Batch file include external file for variables
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133
Note: I'm assuming Windows batch files as most people seem to be unaware that there are signif...
Difference between Big-O and Little-O Notation
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edited Dec 16 '17 at 18:37
Mohamed El-Nakib
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I change the capitalization of a directory and Git doesn't seem to pick up on it
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11 Answers
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How to initialize all members of an array to the same value?
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1276
Unless that value is 0 (in which case you can omit some part of the initializer
and the corre...
Multi-line commands in GHCi
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187
Most of the time, you can rely on type inference to work out a signature for you. In your exam...