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What is meaning of _ in Swift func ?

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The _ is used to define that the parameter is not named
If you have multiple _ it states that you do not need to name the parameters in your function call
func myFunc(name:String, _ age:String){       }

myFunc(Milo", "I'm a really old wizard")
If you do not use the underscore you would use 
myFunc(Milo, age: "I'm a really old wizard")
The _ is not necessary in function calls. It is just used to indicate that something does not to have a name.



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