Built-in Aliases

Some built-in type names are themselves compiler-provided aliases — convenient default spellings for a specific underlying type. Like any alias they are transparent, so the alias and its target are the same type.

type float = float64;  // compiler intrinsic alias

Default-Width Aliases

These three names alias the most common width of their family, so unsuffixed code reads naturally:

Alias	Target	Notes
float	float64	Type of an unsuffixed float literal
bool	bool8	The everyday boolean
char	char32	A full Unicode scalar value

Target-Dependent Aliases

These names alias a type whose width follows the platform's pointer size — *32 on a 32-bit target and *64 on a 64-bit target. Use them for sizes, indices, and counts that should match the machine's natural word:

Alias	32-bit target	64-bit target
int	int32	int64
uint	uint32	uint64

See Also

• Type Aliases — how aliasing works in general
• Primitive Data Types — the full table of built-in types and their sizes