The language is explained here
http://www.sagemath.org/doc/tutorial/tour_coercion.html#conversion-versus-coercion
On Tuesday, October 28, 2014 8:06:44 PM UTC, Erik Massop wrote:
>
> sage: s = Sequence([], QQ)
> sage: s.append(QQ(3)) # no coercion or conversion
> sage: s.extend([int(1), ZZ(2)]) # 2 conversions
>
> sage: s = Sequence([QQ(3)]) # no coercion or conversion
> sage: s.extend([int(1), ZZ(2)]) # 2 coercions
>
I guess so. The Sequence has a fixed universe once its created afair, so
extending it is somewhat of a special case though.
int main () {
> float foo[2];
> foo[0] = 1.00; /* no coercion or conversion */
> foo[1] = 2L; /* conversion */
> return 0;
> }
>
Of course in Python assignment can never be a type conversion since there
are no types. The closest analog to coercion in C++ would be type promotion
rules like
auto x = 1 + 0.5;
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