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ruby

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begin
do_something do
something
end
rescue
something
end
true
end
end
# good
class Foo
def foo
begin
do_something do
something
end
rescue
something
end
end
end
----
=== Trailing Comma in Method Arguments [[no-trailing-params-comma]]
Avoid comma after the last parameter in a method call, especially when the parameters are not on separate lines.
[source,ruby]
----
# bad - easier to move/add/remove parameters, but still not preferred
some_method(
size,
count,
color,
)
# bad
some_method(size, count, color, )
# good
some_method(size, count, color)
----
=== Spaces around Equals [[spaces-around-equals]]
Use spaces around the `=` operator when assigning default values to method parameters:
[source,ruby]
----
# bad
def some_method(arg1=:default, arg2=nil, arg3=[])
# do something...
end
# good
def some_method(arg1 = :default, arg2 = nil, arg3 = [])
# do something...
end
----
While several Ruby books suggest the first style, the second is much more
prominent in practice (and arguably a bit more readable).
=== Line Continuation in Expressions [[no-trailing-backslash]]
Avoid line continuation with `\` where not required.
In practice, avoid using line continuations for anything but string concatenation.
[source,ruby]
----
# bad (\ is not needed here)
result = 1 - \
2
# bad (\ is required, but still ugly as hell)
result = 1 \
- 2
# good
result = 1 -
2
long_string = 'First part of the long string' \
' and second part of the long string'
----
=== Multi-line Method Chains [[consistent-multi-line-chains]]