String case: Difference between revisions

=={{header|Stata}}==

Use '''[https://www.stata.com/help.cgi?f_strupper strupper]''' and '''strlower''' to change case of ASCII characters. Use '''[https://www.stata.com/help.cgi?f_ustrupper ustrupper]''' and '''ustrlower''' to change case of all Unicode letters.

<lang stata>. scalar s="alphaBETA"

. di strupper(s)

ALPHABETA

. di strlower(s)

alphabeta</lang>

Notice there may be some difficulties with Unicode characters. In the following, the uppercase '''[https://en.wikipedia.org/wiki/Sigma sigma]''' is correctly converted back to the lowercase variant, but the '''[https://en.wikipedia.org/wiki/Iota_subscript]''' is not.

<lang stata>. scalar a="Ἐν ἀρχῇ ἐποίησεν ὁ θεὸς τὸν οὐρανὸν καὶ τὴν γῆν"

. scalar b=ustrupper(a)

. di b

ἘΝ ἈΡΧΗ͂Ι ἘΠΟΊΗΣΕΝ Ὁ ΘΕῸΣ ΤῸΝ ΟΥ̓ΡΑΝῸΝ ΚΑῚ ΤῊΝ ΓΗ͂Ν

. di ustrlower(b)

ἐν ἀρχῆι ἐποίησεν ὁ θεὸς τὸν οὐρανὸν καὶ τὴν γῆν</lang>