How to check if a range contains a particular value
Overview
With the contains method, we can check if a range in Swift contains a particular value. If it does, a true Boolean value is returned. Otherwise, a false will be returned.
Syntax
range.contains(value)
Parameters
value: This is the value we check to see if the range instance range contains it.
Return value
The value returned is a Boolean. If the value value is contained in the range instance range, then true is returned. Otherwise, false is returned.
Code example
// create a rangelet range1 = 0 ..< 5 // 0 to 4// print each value in the rangeprint("Printing range elements: ")for value in range1 {print(value)}// check if range contains some valueprint("checking if range contains some value")print("1:", range1.contains(1)) // trueprint("5:", range1.contains(5)) // falseprint("10:", range1.contains(10)) // falseprint("3:", range1.contains(3)) // true
Explanation
- Line 2: We create a range called
range1. - Line 5: Using the
for-inloop, we print all the values that are present in the range. - Lines 10 to 13: We check some values to see if they were present in the range that we created using the
contains()method. We then print the results to the console.
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