[swift-users] range(of:options:range:locale:) with partial ranges

[Martin R via swift-users]

The range(of:options:range:locale:) method of StringProtocol does not accept a 
partial range as search range. Example (Xcode 9, Swift 4):

    let str = "foo"
    let pos = str.startIndex
    let r = str.range(of: "f", range: pos...)
    // error: cannot convert value of type 'PartialRangeFrom<String.Index>'
    // to expected argument type 'Range<String.Index>?'

Is that because it is an NSString method imported to Swift? Would it make sense 
to file an enhancement request?

Regards, Martin


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