kex docs Standard Library

Truthyable

Truthyable — types that can be checked for boolean truthiness (Crystal semantics). Only false, None, and () (Void) are falsy; everything else is truthy. There is no NaN to consider: a float operation that would produce one raises instead, matching BEAM (see nonFiniteFloatError in src/interpreter/value.cxx).

trait `Truthyable`

Implemented by Bool, Integer, Float, String, Optional<X>, [X], Map<K, V>.

Required methods

An implementor writes these.

`truthy?`

truthy? : Bool

extends `Bool`

More methods of Bool, added by this module.

Implements Truthyable.

`truthy?` Truthyable

truthy? : Bool

extends `Integer`

More methods of Integer, added by this module.

Implements Truthyable.

`truthy?` Truthyable

truthy? : Bool

extends `Float`

More methods of Float, added by this module.

Implements Truthyable.

`truthy?` Truthyable

truthy? : Bool

extends `String`

More methods of String, added by this module.

Implements Truthyable.

`truthy?` Truthyable

truthy? : Bool

extends `Optional<X>`

More methods of Optional, added by this module.

Implements Truthyable.

`truthy?` Truthyable

truthy? : Bool

extends `[X]`

More methods of List, added by this module.

Implements Truthyable.

`truthy?` Truthyable

truthy? : Bool

extends `Map<K, V>`

More methods of Map, added by this module.

Implements Truthyable.

`truthy?` Truthyable

truthy? : Bool