Bool

bool is Move’s primitive type for boolean true and false values.

Literals for bool are either true or false.

bool supports three logical operations:

Syntax	Description	Equivalent Expression
&&	short-circuiting logical and	p && q is equivalent to if (p) q else false
||	short-circuiting logical or	p || q is equivalent to if (p) true else q
!	logical negation	!p is equivalent to if (p) false else true

bool values are used in several of Move’s control-flow constructs:

• if (bool) { ... }
• while (bool) { .. }
• assert!(bool, u64)

As with the other scalar values built into the language, boolean values are implicitly copyable, meaning they can be copied without an explicit instruction such as copy.