SWIFT

swift modify dictionary

var someDict:[Int:String] = [1:"One", 2:"Two", 3:"Three"]
var oldVal = someDict.updateValue("New value of one", forKey: 1)
var someVar = someDict[1]

print( "Old value of key = 1 is (oldVal)" )
print( "Value of key = 1 is (someVar)" )
print( "Value of key = 2 is (someDict[2])" )
print( "Value of key = 3 is (someDict[3])" )

Swift Change Value of Dictionary

var studentID = [111: "Eric", 112: "Kyle", 113: "Butters"]
print("Initial Dictionary: ", studentID)

studentID[112] = "Stan"

print("Updated Dictionary: ", studentID)