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ID: ruby-best-practices/loop-with-break
Language: Ruby
Severity: Info
Category: Best Practices
This rule emphasizes the importance of using Kernel#loop
with a break
statement for post-loop tests in Ruby. The Kernel#loop
with break
construct is more idiomatic and readable in Ruby than using begin..end while
or begin..end until
. It also avoids potential confusion about whether the loop will execute at all if the condition is not met initially.
Good readability and clarity are crucial in programming, especially in large codebases where multiple developers are working. It becomes easier for others to understand and maintain the code when it’s written in a more idiomatic way.
To adhere to this rule and improve your coding practices, always use the Kernel#loop
with a break
statement when you need to perform post-loop tests. This way, you can increase the readability of your code and make it more Ruby-like. For example, instead of writing begin..end while
, you can write loop do..break unless..end
.
value = -10
begin
puts value
value += 1
end while value < 0
value = -10
begin
puts value
value += 1
end until value == 0
value = -10
loop do
puts value
value += 1
break unless value < 0
end
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