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Function std.checkedint.Warn.hookOpCmp
Called automatically upon a comparison for ordering using one of the
operators <, <=, >, or >=. In case the comparison is erroneous (i.e.
it would make a signed negative value appear greater than or equal to an
unsigned positive value), then a warning message is printed to stderr.
int hookOpCmp(Lhs, Rhs)
(
Lhs lhs,
Rhs rhs
);
Parameters
| Name | Description |
|---|---|
| lhs | The first argument of Checked, e.g. int if the left-hand side of
the operator is Checked!int |
| rhs | The right-hand side type involved in the operator |
Returns
In all cases, returns lhs < rhs ? -1 : lhs > rhs. The result
is not autocorrected in case of an erroneous comparison.
Example
auto x = checked!Warn(-42);
// Passes
assert(x <= -42);
// Passes but prints a warning
// assert(x <= uint(-42));
Authors
License
Copyright © 1999-2024 by the D Language Foundation | Page generated by ddox.