Swift Array – Remove Elements based on Condition
To remove elements from an Array in Swift, based on a condition or predicate, call removeAll(where:)
method on the array and pass the condition/predicate to where
parameter.
The syntax to call removeAll()
method on the array is
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arrayName.removeAll(where: condition)
where
parameter accepts a predicate which returns boolean value. The elements that satisfy the condition, meaning which return true
for the condition shall be removed from the array.
Example
In the following program, we will take an array fruits
with five string elements, and remove those elements which contain the letter n
.
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var fruits = ["apple", "banana", "cherry", "mango", "guava"]
fruits.removeAll(where: {$0.contains("n")})
print(fruits)
Output
Elements that contain "n"
have been removed from the array.
Conclusion
In this Swift Tutorial, we learned how to remove elements from an Swift Array based on given condition.