Re: bigint implicit cast to bool breaks code

[Paul D. Anderson]

On Thursday, 30 May 2013 at 22:32:08 UTC, Paul D. Anderson wrote:
Issue 4120 added an implicit cast for BigInt to a boolean value.
This used to work:

/// Returns a mutable copy of a BigInt
public BigInt mutable(const BigInt num)
{
        BigInt big = cast(BigInt)num;
        return big;
}

But it now generates an error:

Error: template instance opCast!(BigInt) does not match 
template declaration opCast(T : bool)()

Is there another way to make a mutable copy of a BigInt?

This doesn't work either, by the way:

    BigInt big = BigInt(num);

Error: template std.bigint.BigInt._ctor does not match any 
function template declaration. Candidates are:
... std.bigint.BigInt.__ctor(T : const(char)[](T s)
... std.bigint.BigInt.__ctor(T x) if (isIntegral!(T))