Improve __bool__ #1354
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Improve __bool__ #1354
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youknowone
reviewed
Sep 8, 2019
| Some(int_obj) => !int_obj.as_bigint().is_zero(), | ||
| Some(int_obj) => { | ||
| let len_val = int_obj.as_bigint(); | ||
| if len_val.sign() == Sign::Minus { |
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Do we prefer to have if-else block than this pattern?
if len_val.sign() == Sign::Minus {
Err(
vm.new_value_error("__len__() should return >= 0".to_string())
)
} else {
!len_val.is_zero()
}There was a problem hiding this comment.
It would still have to return the error, as the result of that expression is a bool and not a Result.
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Oh, it must escape from the function, i got it.
youknowone
approved these changes
Sep 8, 2019
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issue founded by @youknowone