golang if no elements in array code example

Example 1: how to check an array for a value in python

s = set(a)
if 7 in s:
  # do stuff

Example 2: check if all array elements match closure swift

let names = ["Sofia", "Camilla", "Martina", "Mateo", "Nicolás"]
let allHaveAtLeastFive = names.allSatisfy({ $0.count >= 5 })
// allHaveAtLeastFive == true