Why do we use _ in Swift?

The _ is a placeholder for the parameter name . In your example, you call them differently, in the second function, you need to write the parameter name a: 1 . Swift’s function name convention is funcName(param1:param2:) , and it needs the _ as a placeholder to create the name of the function.

Read more

What is use of & operator in Swift?

4. Swift Logical Operators OperatorExampleMeaning&&a && bLogical AND: true only if both the operands are true||a || bLogical OR: true if at least one of the operands is true!!aLogical NOT: true if the operand is false and vice-versa.Swift Operators (With Examples) – Programiz www.programiz.com › swift-programming › operators

Read more