in some cases, in particular when invoking methods (try r.is_ascii()). There is no need for an -> operator like in C++. • 이 예에서 r 은 변경 가능하므로 다시 할당할 수있습니다 (r = &b). 이렇게 하면 r 이 다시 바인 딩되어다른 것을 참조합니다. 이는 참조에 inner_width(); // TODO: Change draw_into to return Result<(), std::fmt::Error>. Then use the // ?-operator here instead of .unwrap(). writeln!(buffer, "+-{:-operator ? is used to return errors to the caller. It lets you turn the common match some_expression {

in some cases, in particular when invoking methods (try r.is_ascii()). There is no need for an -> operator like in C++. • 이 예에서 r 은 변경 가능하므로 다시 할당할 수있습니다 (r = &b). 이렇게 하면 r 이 다시 바인 딩되어다른 것을 참조합니다. 이는 참조에 inner_width(); // TODO: Change draw_into to return Result<(), std::fmt::Error>. Then use the // ?-operator here instead of .unwrap(). writeln!(buffer, "+-{:-operator ? is used to return errors to the caller. It lets you turn the common match some_expression {

Addition (Operator: + ) Just adds the numbers. Usage: 50+100 Output: 150 Subtraction (Operator: - ) Just subtracts the last number from the first. Usage: 50-100 Output: 50 Multiplication (Operator: * ) multiplies the numbers. Usage: 50*100 Output: 5000 Division (Operator: / ) Just divides the numbers. Usage: 50/100 Output: 0.5 Exponent (Operator: ^ ) Makes the last number the exponent of the first and calculates the result. Usage: 2^8 Output: 256 Sine (Operator: sin() ) Gives you the sine of the given angle. Usage: sin(50) Output: 0.76 Cosine (Operator: cos() ) Gives you the cosine of the given angle

QA-9702] 20.3.2 Boolean operation and operator [&&, ||, ()] You can use boolean expression, in the test, with : • parenthesis (); • and operator &&; • or operator ||. (See next example, within if test false] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272 20.3.2 Boolean operation and operator [&&, ||, ()] . . . . . . . . . . . . . . . . . . . . . . . . . 272 20.3.3 Boolean builtin functions

QA-9702] 20.3.2 Boolean operation and operator [&&, ||, ()] You can use boolean expression, in the test, with : • parenthesis (); • and operator &&; • or operator ||. (See next example, within if test false] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260 20.3.2 Boolean operation and operator [&&, ||, ()] . . . . . . . . . . . . . . . . . . . . . . . . . 260 20.3.3 Boolean builtin functions

QA-9702] 24.3.2 Boolean operation and operator [&&, ||, ()] You can use boolean expression, in the test, with : • parenthesis (); • and operator &&; • or operator ||. (See next example, within if test false] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340 24.3.2 Boolean operation and operator [&&, ||, ()] . . . . . . . . . . . . . . . . . . . . . . 340 24.3.3 Boolean builtin functions [%false()

QA-9702] 25.3.2 Boolean operation and operator [&&, ||, ()] You can use boolean expression, in the test, with : • parenthesis (); • and operator &&; • or operator ||. (See next example, within if test . . 345 PlantUML 언어참조가이드 (1.2021.2) 389 / 390 CONTENTS CONTENTS 25.3.2 Boolean operation and operator [&&, ||, ()] . . . . . . . . . . . . . . . . . . . . . . 345 25.3.3 Boolean builtin functions [%false()

QA-9702] 25.3.2 Boolean operation and operator [&&, ||, ()] You can use boolean expression, in the test, with : • parenthesis (); • and operator &&; • or operator ||. (See next example, within if test false] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361 25.3.2 Boolean operation and operator [&&, ||, ()] . . . . . . . . . . . . . . . . . . . . . . 361 25.3.3 Boolean builtin functions [%false()

QA-9702] 25.2.2 Boolean operation and operator [&&, ||, ()] You can use boolean expression, in the test, with : • parenthesis (); • and operator &&; • or operator ||. (See next example, within if test false] . . . . . . . . . . . . . . . . . . . . . . . . . . . . 498 25.2.2 Boolean operation and operator [&&, ||, ()] . . . . . . . . . . . . . . . . . . . . . . 498 25.2.3 Boolean builtin functions [%false()