If Statement
if
statements follow C syntax.
if foo(x) {
print("It's true!");
} else if bar == baz {
print("It's true again!");
} else if baz.is_foo() {
print("Yet again true.");
} else if foo(bar - baz) {
print("True again... this is getting boring.");
} else {
print("It's finally false!");
}
Unlike C, the condition expression does _not_ need to be enclosed in parentheses `(`...`)`, but all
branches of the `if` statement must be enclosed within braces `{`...`}`, even when there is only
one statement inside the branch.
There is no ambiguity regarding which `if` clause a branch belongs to.
```rust
// Rhai is not C!
if (decision) print(42);
// ^ syntax error, expecting '{'
```
If Expression
if
statements can also be used as expressions, replacing the ? :
conditional operators in
other C-like languages.
// The following is equivalent to C: int x = 1 + (decision ? 42 : 123) / 2;
let x = 1 + if decision { 42 } else { 123 } / 2;
x == 22;
let x = if decision { 42 }; // no else branch defaults to '()'
x == ();