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'print' does not call 'tostring' to format its arguments

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Roberto Ierusalimschy
2019-04-10 12:58:14 -03:00
parent 979ad95eb1
commit 8ba4523ccc
3 changed files with 16 additions and 28 deletions
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13
manual/manual.of
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@@ -6143,8 +6143,10 @@ In case of any error, @id{pcall} returns @false plus the error object.
@LibEntry{print (@Cdots)|
Receives any number of arguments
and prints their values to @id{stdout},
using the @Lid{tostring} function to convert each argument to a string.
@id{print} is not intended for formatted output,
converting each argument to a string
following the same rules of @Lid{tostring}.
The function @id{print} is not intended for formatted output,
but only as a quick way to show a value,
for instance for debugging.
For complete control over the output,
@@ -8772,6 +8774,13 @@ like any other error when calling a finalizer.)
@sect2{@title{Incompatibilities in the Libraries}
@itemize{
@item{
The function @Lid{print} does not call @Lid{tostring}
to format its arguments;
instead, it has this functionality hardwired.
You should use @id{__tostring} to modify how values are printed.
}
@item{
The pseudo-random number generator used by the function @Lid{math.random}
now starts with a somewhat random seed.