return
statement
Syntax
ReturnStatement :
return
Expression?
The return statement is denoted with the keyword return
. A return
statement leaves the current function call with a return value which is either the value of the evaluated expression (if present) or ()
(unit type) if return
is not followed by an expression explicitly.
An example of a return
statement without explicit use of an expression:
contract Foo:
fn transfer(self, to: address, value: u256):
if not self.in_whitelist(to):
return
fn in_whitelist(self, to: address) -> bool:
# revert used as placeholder for actual logic
revert
The above can also be written in a slightly more verbose form:
contract Foo:
fn transfer(self, to: address, value: u256) -> ():
if not self.in_whitelist(to):
return ()
fn in_whitelist(self, to: address) -> bool:
# revert used as placeholder for actual logic
revert