Class: Conditionz::PreCondition

Inherits:

Object

• Object
• Conditionz::PreCondition

Defined in:

lib/conditionz/pre_condition.rb

Overview

Raise precondition error when predicate is false

Class Method Summary

• .require(predicate, message = 'Precondition not met') ⇒ Object

  Raise precondition error if predicate is false.

Class Method Details

.require(predicate, message = 'Precondition not met') ⇒ Object

Raise precondition error if predicate is false. Otherwise do nothing

Attributes

• predicate - a boolean expression to eval

• message - Error message to raise

Examples

PreCondition.require age > 0, “Age must be positive” PreCondition.require age > 0

# File 'lib/conditionz/pre_condition.rb', line 20

def self.require predicate, message = 'Precondition not met'
  ConditionBase.verify predicate, PreConditionNotMetError, message
end