Martin v. Löwis <[EMAIL PROTECTED]> wrote:
>> @overloaded
>> def sqrt(value):
>> raise TypeError("Cannot take square root of %s" %
>> type(value).__name__)
>>
>> @sqrt.overload
>> def sqrt_float(value : float):
>> return math.sqrt(value)
>>
>> @sqrt.overload
>> def sqrt_complex(value : complex):
>> return cmath.sqrt(value)
>>
>> @sqrt.overload
>> def sqrt_decimal(value : decimal):
>> return value.sqrt()
>>
>> # Similar overloads can be added for the types in gmpy and numpy.
>
> So where would that sqrt function live? I hope you are not proposing
> it becomes a builtin - I dearly wish there were fewer builtins, not
> more.
"math" would be fine for all builtin types. For other types, imported from
modules, such as numpy, they could add their overload to math.sqrt at
import-time.
Giovanni Bajo
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