2.6. Operator precedence🔗

Higher rows bind more tightly.

Precedence	Operators and forms	Associativity
1000	`{ ... }`, `{ ... } label`	atomic
95	call `f(...)`, field `x#f`	left, chaining
90	postfix `x++`, `x--`	postfix
80	`!x`, `-x`, `++x`, `--x`, `new C`	prefix
70	`*`, `/`, `%`, `/t`, `%t`	left
60	`+`, `-`, `^`	left
40	`==`, `!=`, `<`, `<=`, `>`, `>=`, `is`, `as`	non-associative
30	eager `&`, short-circuit `&&`	left
20	eager `\|`, short-circuit `\|\|`, `if`	left
15	`==>`	right
10	`:=`, `+=`, `-=`, `*=`, `/=`, `%=`, `^=`	compound forms right-associate

Because if sits at precedence 20, an if used as an operand of a comparison or an arithmetic operator needs parentheses: write (if c then 1 else 2) == y. Parenthesise freely when mixing comparison, type-test, implication, and assignment forms.