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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...
Code Golf: Lasers
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Perl, 166 160 characters
Perl, 251 248 246 222 214 208 203 201 193 190 180 176 173 170 166 --> 160 chars.
Solution had 166 strokes when this contest ended, but A. Rex has found a couple ways to shave off 6 more characters:
s!.!$t{$s++}=$&!ge,$s=$r+=99for<>;%d='>....
Hidden Features of Visual Studio (2005-2010)?
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Java URL encoding of query string parameters
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URLEncoder is the way to go. You only need to keep in mind to encode only the individual query s...
Are default enum values in C the same for all compilers?
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James McNellisJames McNellis
319k7070 gold badges865865 silver badges944944 bronze badges
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What is the difference between children and childNodes in JavaScript?
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Understand that .children is a property of an Element. 1 Only Elements have .children, and the...
Why does Environment.Exit() not terminate the program any more?
...fender, wdboot.sys, wdfilter.sys, tcpip.sys, rpcrt4.dll, uxtheme.dll, crypt32.dll and wintrust.dll
Uxtheme.dll is the odd-duck out. It implements the Visual Styles theming API and is used by this test program. I can't be sure, but my money is on that one as the source of the problem. The copy in ...
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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Xcode 4 and Core Data: How to enable SQL Debugging
... SQL logging for iOS Core Data development. The given example is for Xcode 3 and it's just not clear to me how to enable this in Xcode 4.
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