Take advantage of raw strings in Swift 5

Swift 5 comes with enhancement in string literals delimiters to support Raw Text.

Let’s go with examples

Use of # delimiter

We can use # delimiter with start and end of the strings to use less escape sequences.

fileprivate func useOfHashDelimiter() {
    let stringSwift4 = "This is \"Swift 4.x\"."
    print(stringSwift4)
    
    let stringSwift5 = #"This is "Swift 5.x"."#
    print(stringSwift5)
}

Output:

This is “Swift 4.x”.
This is “Swift 5.x”.

Use of variables with # delimiter

We can use variable with string like \#(variableName)

fileprivate func useOfVariableWithString() {
    var intSwift = 4
    let stringSwift4 = "This is \"Swift \(intSwift).x\" with variable."
    print(stringSwift4)
    
    intSwift = 5
    let stringSwift5 = #"This is "Swift \#(intSwift).x" with variable."#
    print(stringSwift5)
}

Output:

This is “Swift 4.x” with variable.
This is “Swift 5.x” with variable.

Multiline String with # delimiter

We can use # delimiter in multiline strings too.

fileprivate func withMultilineString() {
    let intSwift = 5
    let multiline = #"""
    This is
    Swift \#(intSwift).
    """#
    print(multiline)
}

Output:

This is
Swift 5.

Conclusion

Swift is getting more stable day by day!

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Happy Coding 🙂

References

Behind the Proposal — SE-0200 Enhancing String Literals Delimiters to Support Raw Text

Originally published at ashishkakkad.com on April 9, 2019.