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Possible to iterate backwards through a foreach?
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Shimmy Weitzhandler
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answered Jul 31 '09 at 9:40
Sam HarwellSam Harwell
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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...
Do we need semicolon at the end? [duplicate]
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answered Oct 23 '10 at 3:00
John KJohn K
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Java URL encoding of query string parameters
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1183
URLEncoder is the way to go. You only need to keep in mind to encode only the individual query s...
How to thoroughly purge and reinstall postgresql on ubuntu? [closed]
...er Port Status Owner Data directory Log file
11 main 5432 online postgres /var/lib/postgresql/11/main /var/log/postgresql/postgresql-11-main.log
$ sudo systemctl stop postgresql@11-main
$ sudo pg_dropcluster --stop 11 main
$ sudo pg_createcluster --start 11 main
Option B
If yo...
How do you specify the Java compiler version in a pom.xml file?
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<project>
[...]
<build>
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<plugins>
<plugin>
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What are “named tuples” in Python?
Reading the changes in Python 3.1 , I found something... unexpected:
11 Answers
11
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Are default enum values in C the same for all compilers?
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James McNellisJames McNellis
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How to get the last element of an array in Ruby?
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edited Dec 26 '11 at 23:15
answered Dec 26 '11 at 23:07
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