In the documentation it is being used as a wildcard to indicate a function that takes an unnamed parameter .
Read moreWhat is _ variable in Swift?
Variables are used to store data in memory so that we can use them in program . Variables are like container that can hold data which can be changed later. Every variable has a unique name called identifier.
Read moreWhat is _ in Swift function parameter?
Omitting Argument Labels If you don’t want an argument label for a parameter, write an underscore ( _ ) instead of an explicit argument label for that parameter. // refer to the argument values for the first and second parameters.
Read moreWhy 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 moreWhat 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 moreIs not operator in Swift?
Swift NOT Operator ! is used to perform logical NOT operation on a boolean operand . ! symbol is used for Logical NOT Operator in Swift. NOT Operator takes one boolean value as operands on its right and returns the logical NOT of the operand.
Read moreWhat does ~= mean in Swift?
Discussion. The pattern-matching operator ( ~= ) is used internally in case statements for pattern matching. When you match against an Equatable value in a case statement, this operator is called behind the scenes.
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