Keywords and Reserved Words

Keywords are reserved words that have special meaning in the language.

Keywords

The following words are keywords and cannot be used as identifiers:

Keyword	Description
`borrow`	Borrow parameter mode
`fn`	Function declaration
`inout`	Inout parameter mode
`let`	Variable binding
`linear`	Linear struct modifier
`mut`	Mutable binding modifier
`if`	Conditional expression
`else`	Alternative branch
`while`	While loop expression
`loop`	Infinite loop expression
`match`	Pattern matching expression
`return`	Return from function
`break`	Exit loop
`comptime`	Compile-time evaluation
`continue`	Skip to next iteration
`true`	Boolean literal
`false`	Boolean literal
`struct`	Struct definition
`enum`	Enum definition
`impl`	Impl block
`self`	Self parameter in methods
`drop`	Destructor declaration

The following are type names and are reserved: