Naming-PredicateName.md

Pattern: Invalid predicate name

Issue: -

Description

This rule makes sure that predicates are named properly.

Examples

# bad
def is_even?(value) ...

# good
def even?(value)

# bad
def has_value? ...

# good
def value? ...

Default configuration

Attribute	Value
NamePrefix	is_, has_, have_
NamePrefixBlacklist	is_, has_, have_
NameWhitelist	is_a?
MethodDefinitionMacros	define_method, define_singleton_method
Exclude	spec/**/*

Further Reading

• RuboCop - Naming/PredicateName
• https://github.com/bbatsov/ruby-style-guide#bool-methods-qmark