veksha
commented
11 months ago comment on the forum by janAkali:
Converters enable implicit conversion. And combined with templates it causes unexpected results:template inspect(a: typed) =
if a is seq and a.len > 0:
if a[0] is byte:
echo "It is a sequence of bytes!"
elif a[0] is char:
echo "It is a sequence of chars!"
else:
echo "It is something else."
converter `toString`(a: seq[byte]): string = cast[ptr string](a.addr)[]
echo char is byte # false
inspect(@[byte 1, 2, 3]) # compiles and outputs: it is a sequence of chars!
ringabout
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metagn
Description
In my full program i have the following converter
toString. (though this small example i don't even use strings) later in the code i have slice assignmentquery[0..1] = @[byte 8,8].code compiled fine with Nim 1.x
Nim Version
Nim Compiler Version 2.1.1 [Windows: amd64] Compiled at 2023-11-19 Copyright (c) 2006-2023 by Andreas Rumpf
git hash: cecaf9c56b1240a44a4de837e03694a0c55ec379 active boot switches: -d:release
Current Output
Expected Output
Possible Solution
No response
Additional Information
please see forum thread https://forum.nim-lang.org/t/10655 for more info.