Il 18/09/19 13:16, Jason H ha scritto:
What's the best way to zero-pad a QByteArray?
What I want is QByteArray("%1").arg(6, 10, 10, '0')
Mostly it has to do with the fact that QByteArray is sitting between two worlds; on one side it's just a container of bytes, on the other side it has _some_ manipulation functions for ASCII-like strings. "Some" because, as you've noticed, stuff like the arg() convenience is missing.
If you really need a QByteArray you can work around this by e.g. using a printf-like function, what you're looking for is the "%010d" formatting.
Pseudocode: int n = 123; const char *format = "The number is %010d"; auto size = qsnprintf(nullptr, 0, format, n); QByteArray result(size, Qt::uninitialized); qsnprintf(result.data(), result.size(), format, n); HTH, -- Giuseppe D'Angelo | [email protected] | Senior Software Engineer KDAB (France) S.A.S., a KDAB Group company Tel. France +33 (0)4 90 84 08 53, http://www.kdab.com KDAB - The Qt, C++ and OpenGL Experts
smime.p7s
Description: Firma crittografica S/MIME
_______________________________________________ Interest mailing list [email protected] https://lists.qt-project.org/listinfo/interest
