emit statement

^Syntax
EmitStatement :
   emit EventLiteral ( CallParams^? )

EventLiteral :
   IDENTIFIER^{Name of event defined in current module}

CallParams :
   CallArg ( , CallArg )^* ,^?

CallArg :
   (CallArgLabel :)^? Expression

CallArgLabel :
   IDENTIFIER^{Label must correspond to the name of the event property at the given position. It can be omitted if parameter name and event property name are equal.}

The emit statement is used to create log entries in the blockchain. The emit keyword is followed by a literal that corresponds to a defined event, followed by a parenthesized comma-separated list of expressions.

Examples:

use std::context::Context

contract Foo:
    event Mix:
        num1: u256
        idx addr: address
        num2: u256
        my_bytes: Array<u8, 100>

    pub fn emit_mix(ctx: Context, addr: address, my_bytes: Array<u8, 100>):
        emit Mix(ctx, num1: 26, addr, num2: 42, my_bytes)