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[] and {} vs list() and dict(), which is better?
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198
In terms of speed, it's no competition for empty lists/dicts:
>>> from timeit import...
How do I match any character across multiple lines in a regular expression?
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answered Oct 1 '08 at 18:52
Jeremy RutenJeremy Ruten
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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...
I change the capitalization of a directory and Git doesn't seem to pick up on it
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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...
Disable Maven warning message - “Selected war files include a WEB-INF/web.xml which will be ignored”
When building WAR package using Maven 2.1.1, I get this warning message:
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How to make rounded percentages add up to 100%
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Setting EditText imeOptions to actionNext has no effect
...omplex (not really) xml layout file. One of the views is a LinearLayout ( v1 ) with two children: an EditText( v2 ) and another LinearLayout( v3 ). The child LinearLayout in turn has an EditText( v4 ) and an ImageView( v5 ).
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