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How to insert a value to a set in Swift
Theodore Kelechukwu OnyejiakuOverview
The insert() method inserts a value or an element to a set in Swift.
Syntax
set.insert(element)
The syntax for inserting an element
Parameters
element: This is the element we want to insert into the set.
Return value
It returns a boolean value and also the element we want to insert. The boolean denotes if the insertion was successful.
Example
// create some sets
var evenNumbers : Set = [10, 2, 6, 8, 4]
var oddNumbers : Set = [11, 5, 7, 3, 9]
var first_names : Set = ["john", "jane", "henry", "mark"]
// insert some elements and store results
let ins1 = evenNumbers.insert(45)
let ins2 = oddNumbers.insert(13)
let ins3 = first_names.insert("Theodore")
let ins4 = first_names.insert("")
// print inserted results
print(ins1)
print(ins2)
print(ins3)
print(ins4)
// print sets
print(evenNumbers)
print(oddNumbers)
print(first_names)Inserting an element into a set in Swift
Explanation
- Line 2–4: We create some sets.
- Line 7–10: We use the
insert()method to insert some elements into the sets. We also store the returned results into some variables.
- Line 13–16: We print the returned results.
- Line 19–21: We print the sets and notice that the elements have been inserted.
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swift
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