Hi. On syntactic sugar (which is what it's called when things are replace with the $ sign, I believe).
What's the long version of this (meaning what does $0 and $1 represent)?
var numbers = [29, 19, 7, 12]
let sortedNumbers = numbers.sorted()
{ $0 > $1 }
Thank you in advance.
God bless, Genesis 1:3
Before going on to long version, first, short version.
let sortedNumbers0 = numbers.sorted{ $0 > $1 }A little long version:
let sortedNumbers2 = numbers.sorted(by: { $0 > $1 })Long version:
let sortedNumbers3 = numbers.sorted(by: { (left: Int, right: Int)->Bool in left > right })In a closure expression, `$0` represents the first argument passed to the closure and `$1` represents the second.
(See Shorthand Argument Names in the linked article.)
(Seems this is a topic for the Swfit area.)
Before going on to long version, first, short version.
let sortedNumbers0 = numbers.sorted{ $0 > $1 }A little long version:
let sortedNumbers2 = numbers.sorted(by: { $0 > $1 })Long version:
let sortedNumbers3 = numbers.sorted(by: { (left: Int, right: Int)->Bool in left > right })In a closure expression, `$0` represents the first argument passed to the closure and `$1` represents the second.
(See Shorthand Argument Names in the linked article.)
(Seems this is a topic for the Swfit area.)