Class: Contracts::Builtin::RangeOf

Inherits:
CallableClass show all
Defined in:
lib/contracts/builtin_contracts.rb

Overview

Use this to specify a Range object of a particular datatype. Example: RangeOf[Nat], RangeOf[Date], …

Instance Method Summary collapse

Methods inherited from CallableClass

[]

Constructor Details

#initialize(contract) ⇒ RangeOf

Returns a new instance of RangeOf.


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# File 'lib/contracts/builtin_contracts.rb', line 366

def initialize(contract)
  super()
  @contract = contract
end

Instance Method Details

#to_sObject


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# File 'lib/contracts/builtin_contracts.rb', line 377

def to_s
  "a range of #{@contract}"
end

#valid?(val) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'lib/contracts/builtin_contracts.rb', line 371

def valid?(val)
  val.is_a?(Range) &&
    Contract.valid?(val.first, @contract) &&
    Contract.valid?(val.last,  @contract)
end