Class: RuboCop::Cop::Performance::MethodObjectAsBlock

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain: self, Base
Instance Chain: self, Base
Inherits:	Base Object Base RuboCop::Cop::Performance::MethodObjectAsBlock
Defined in:	lib/rubocop/cop/performance/method_object_as_block.rb

Overview

Identifies places where methods are converted to blocks, with the use of &method, and passed as arguments to method calls. It is faster to replace those with explicit blocks, calling those methods inside.

Examples:

# bad
array.map(&method(:do_something))
[1, 2, 3].each(&out.method(:puts))

# good
array.map { |x| do_something(x) }
[1, 2, 3].each { |x| out.puts(x) }

Constant Summary

MSG =
# File 'lib/rubocop/cop/performance/method_object_as_block.rb', line 20
```
'Use block explicitly instead of block-passing a method object.'
```

Instance Method Summary

#on_block_pass(node)

Instance Method Details

#on_block_pass(node)

[ GitHub ]

# File 'lib/rubocop/cop/performance/method_object_as_block.rb', line 26


def on_block_pass(node)
  add_offense(node) if method_object_as_argument?(node)
end