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Rails 3: “field-with-errors” wrapper changes the page appearance. How to avoid this?
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edited Feb 6 '14 at 0:46
Adrian Macneil
11.9k44 gold badges4848 silver badges6868 bronze badges
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iPhone and OpenCV
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Rui MarquesRui Marques
6,53633 gold badges4343 silver badges8181 bronze badges
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How to map and remove nil values in Ruby
...s = [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 subject, with some performance benchmarks against some...
class
...elf
def value_of obj
obj.to_s
end
end
end
String.value_of 42 # => "42"
This can also be written as a shorthand:
class String
def self.value_of obj
obj.to_s
end
end
Or even shorter:
def String.value_of obj
obj.to_s
end
When inside a function definition, self ...
How do you normalize a file path in Bash?
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Inigo
2,6641111 silver badges3232 bronze badges
answered Nov 12 '08 at 17:20
Kent FredricKent Fredric
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'App not Installed' Error on Android
...ot installed error when trying to install an apk on my phone which runs on 4.4.2 aka KitKat, but my friend did not encounter this error on his phone which runs on 6+. I tried the other solutions such as removing the old/debug version of the app because the apk was a release version, clearing the deb...
Add Bootstrap Glyphicon to Input Box
...igned feedback icons
.has-feedback .form-control {
padding-right: 34px;
}
.has-feedback .form-control.input-sm,
.has-feedback.form-group-sm .form-control {
padding-right: 30px;
}
.has-feedback .form-control.input-lg,
.has-feedback.form-group-lg .form-control {
padding-right: 46px...
Why can I use a function before it's defined in JavaScript?
...:28
Oreo
41222 silver badges1313 bronze badges
answered Nov 4 '08 at 12:13
bobincebobince
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Git for Windows - The Program can't start because libiconv2.dll is missing
...rtain commands (like git push, for example) from a git Bash on Windows 7 (64bit) I get the error:
25 Answers
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Hidden Features of C#? [closed]
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