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- Subject: Re: Floats and %d
- From: Daurnimator <quae@...>
- Date: Wed, 15 Jul 2015 11:05:37 +1000
On 15 July 2015 at 10:58, Rena <firstname.lastname@example.org> wrote:
> This is something I've been stubbing my toe on a lot lately and it's
> rather annoying:
> Lua 5.3.1 Copyright (C) 1994-2015 Lua.org, PUC-Rio
> ; print(string.format('%d', 1.1))
> stdin:1: bad argument #2 to 'format' (number has no integer representation)
> stack traceback:
> [C]: in function 'string.format'
> stdin:1: in main chunk
> [C]: in ?
> In previous versions - and in C - it would just silently truncate the
> number (drop the fractional part). Why was this changed?
Truncation is undefined and a surprising source of errors.
See the subthread starting at