How to Convert a Set of Strings to a Set of Floats in Swift - Step by Step Examples

How to Convert a Set of Strings to a Set of Floats in Swift ?

Answer

To convert a set of strings to a set of floats in Swift, you can use the compactMap method to transform each string into a float and filter out any nil values, and then create a new set from the resulting array.


✐ Examples

1 Convert Set of Strings to Set of Floats Example 1

In this example,

  1. First, we create a set named stringSet1 using the Set constructor, which contains the string values "1.1", "2.2", and "3.3".
  2. Next, we use the compactMap method on stringSet1 to transform each string into a float using the closure Float($0). This closure returns an optional float, so compactMap filters out any nil values.
  3. We convert the resulting array to a set using the Set constructor, resulting in a set of floats named floatSet1.
  4. Finally, we print the set of floats using print.

Swift Program

let stringSet1: Set<String> = ["1.1", "2.2", "3.3"]
let floatSet1 = Set(stringSet1.compactMap { Float($0) })
print(floatSet1)

Output

Set(3.3, 2.2, 1.1)

2 Convert Set of Strings to Set of Floats Example 2

In this example,

  1. We create a set named stringSet2 using the Set constructor, which contains the string values "1.1", "hello", "2.2", "3.3", and "world".
  2. We use the compactMap method on stringSet2 to transform each string into a float using the closure Float($0). This closure returns an optional float, so compactMap filters out any nil values.
  3. We convert the resulting array to a set using the Set constructor, resulting in a set of floats named floatSet2.
  4. Finally, we print the set of floats using print.

Swift Program

let stringSet2: Set<String> = ["1.1", "hello", "2.2", "3.3", "world"]
let floatSet2 = Set(stringSet2.compactMap { Float($0) })
print(floatSet2)

Output

Set(3.3, 2.2, 1.1)

Summary

In this tutorial, we learned How to Convert a Set of Strings to a Set of Floats in Swift language with well detailed examples.


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