string - Converting Character and CodePoint in Swift -

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can convert directly between swift character , unicode numeric value? is:

var i:int = ...  // plain integer index. var mycodeunit:uint16 = mystring.utf16[i] // mychar = mycodeunit character, or equivalent.

or...

var j:string.index = ... // not integer! var mychar:character = mystring[j] // mycodeunit = mychar uint16

i can say:

mycodeunit = string(mychar).utf16[0]

but means creating new string each character. , doing thousands of times (parsing text) lot of new strings being discarded.

the type character represents "unicode grapheme cluster", can multiple unicode codepoints. if want 1 unicode codepoint, should use type unicodescalar instead.


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