Control Flow

NAME wyzer-control-flow - Branching and iteration constructs

DESCRIPTION Wyzer provides if expressions and while/for loops. Control flow constructs evaluate to values.

SYNOPSIS: CONDITIONALS

let number = if condition { 5 } else { 6 };

if ptr != null && ptr.val > 0 {
    // ...
}

CONDITIONAL DETAILS

• if expressions: Evaluates to the last expression of the executed block. Both branches must return identical types.
• Short-circuiting: Logical AND (&&) and OR (||) evaluate left-to-right and short-circuit.

SYNOPSIS: LOOPS

var count = 0;
while count < 3 {
    count = count + 1;
}

for item in collection {
    io::println(f"Item: {item}");
}

LOOP DETAILS

• while: Executes block while condition evaluates to true.
• for ... in: Iterates over an iterator or collection.

SYNOPSIS: EARLY RETURNS

fn find_early(x: u32) -> bool {
    if x == 5 {
        return true;
    }
    false
}

RETURN DETAILS

• return: Immediately halts function execution and returns the specified value.
• Implicit return: If a block has no trailing semicolon, the final expression is implicitly returned.