Swift Tutorial - Tutorialspoint

class division {

var count: Int = 0

func incrementBy(no1: Int, no2: Int) {

count = no1 / no2

println(count)

}

}

let counter = division()

counter.incrementBy( 1800 , no2: 3 )

counter.incrementBy( 1600 , no2: 5 )

counter.incrementBy( 11000 , no2: 3 )

When we run the above program using playground, we get the following result:

600

320

3666

External Parameter Name with # and _ Symbol

Even though Swift methods provide first parameter names for local declarations, the user
has the provision to modify the parameter names from local to global declarations. This
can be done by prefixing '#' symbol with the first parameter name. By doing so, the first
parameter can be accessed globally throughout the modules.

When the user needs to access the subsequent parameter names with an external name,
the methods name is overridden with the help of '_' symbol.

class multiplication {

var count: Int = 0

func incrementBy(#no1: Int, no2: Int) {

count = no1 * no2

println(count)

}

}

let counter = multiplication()

counter.incrementBy(no1: 800 , no2: 3 )