Instance Methodswift-algorithms 1.2.1Algorithms->Swift

    trimmingPrefix(while:)

    Returns a SubSequence formed by discarding all elements at the start of the collection which satisfy the given predicate.

    Trim.swift:31
    func trimmingPrefix(while predicate: (Element) throws -> Bool) rethrows -> SubSequence
    Mangled symbol
    sSl10AlgorithmsE14trimmingPrefix5while11SubSequenceQzSb7ElementQzKXE_tKF What are these?
    FNV24 hash
    9SME6

    Parameters

    predicate

    A closure which determines if the element should be omitted from the resulting slice.

    This example uses trimmingPrefix(while:) to get a substring without the white space at the beginning of the string:

    let myString = "  hello, world  "
print(myString.trimmingPrefix(while: \.isWhitespace)) // "hello, world  "