swift滤镜数组产生重复(如何去除滤镜重复)

var filters = ["filter1", "filter2", "filter1", "filter3"]
let uniqueFilters = Array(Set(filters))
print(uniqueFilters) // 输出 ["filter2", "filter1", "filter3"]

var filters = ["filter1", "filter2", "filter1", "filter3"]
let uniqueFilters = NSOrderedSet(array: filters)
print(uniqueFilters) // 输出 ["filter1", "filter2", "filter3"]

var filters = ["filter1", "filter2", "filter1", "filter3"]
var uniqueFilters = [String]()

for filter in filters {
    if !uniqueFilters.contains(filter) {
        uniqueFilters.append(filter)
    }
}

print(uniqueFilters) // 输出 ["filter1", "filter2", "filter3"]