ios - Having only one element of array to be sorted in my case -
i have list of string:
var namelist = ["apple", "watermelon", "orange", ...] the list returned backend, order not garanteed.
i want have orange 1st element in array, no need care other elements' order.
i try use namelist.sort { $0 // do}, stuck, because want 1 element first element.
how achieve it?
====== update ======
a followup question. if have list of fruit objects, each fruit custom struct object:
struct fruit { public let name; public let weight; init(_ name: string, _ weight: double) { self.name = name self.weight = weight } } now, got list of fruit:
var fruitlist:[fruit] = getdatafrombackend() i have fruit name "orange" first item, how now?
you can find index of "orange", , swap 0-th index:
if let indexoforange = namelist.index(of: "orange") { if indexoforange != 0 { swap(&namelist[0], &namelist[indexoforange]) } } if list can have multiple oranges, use snippet instead:
let sorted = namelist.filter {$0 == "orange"} + namelist.filter {$0 != "orange"} it concatenates list of oranges list of non-oranges.
Comments
Post a Comment