Errors when printing Unicode Grapheme Clusters by a for loop

Question

I would like to print out the grapheme clusters of which the code point from U+0021 to U+0100 in the Unicode table

for i in 21...100 {
    print("\u{i} ", terminator: "")
}

The compiler presented me the following error

Question: I guess I can't use the index from the for loop array as the Unicode Scalar indicator in the string interpretation. If so, what steps should I change to use the loop correctly

Many thanks

I don't know swift so this could be totally wrong but do you need to cast from int to char. — Casey, Aug 20 '16 at 13:01
See http://stackoverflow.com/questions/25799413/converting-to-char-string-from-ascii-int-in-swift or even http://stackoverflow.com/questions/34259425/how-to-convert-an-int-to-a-character-in-swift — Wiktor Stribiżew, Aug 20 '16 at 13:06

Martin R · Accepted Answer · 2016-08-20T13:35:12.867

1

The \u{n} special character works only with a literal hexadecimal number n. But you can create a unicode scalar from its numerical value:

for i in 0x21...0x100 {
    print(UnicodeScalar(i), terminator: "")
}

edited Aug 20 '16 at 13:35

answered Aug 20 '16 at 13:04

Martin R

529,903
94
1,240
1,382

Thanks a lot Martin – SLN Aug 20 '16 at 14:25

Errors when printing Unicode Grapheme Clusters by a for loop

1 Answers1