549 B
549 B
Constants
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Constants can be defined using the const keyword and are immutable.
Constants follow the same naming rules as [variables].
const x = 42;
print(x * 2); // prints 84
x = 123; // <- syntax error: cannot assign to constant
Unlike variables which need not have initial values (default to [()]),
constants must be assigned one, and it must be a constant value, not an expression.
const x = 40 + 2; // <- syntax error: cannot assign expression to constant