A function stored now and called later fails at the call site, which can be a training run and several frames away from the argument that was wrong. Checking at the constructor that it is a function, and that it can take the argument it will be given, keeps the complaint next to the mistake.
Arguments
- f
The user's value.
- arg
Name of the argument.
- what
Optional phrase naming the argument the function receives, e.g.
"the number of draws". Shown in parentheses.- n_args
Number of positional arguments
fwill be called with. Defaults to 1.fpasses if it has at leastn_argsformals, or fewer formals plus....