Professional haXe and Neko

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L. McColl-Sylvester and F. Ponticelli

"Professional haXe and Neko"

The function is used in the conventional way:
var l = [1,2,4,8,16]; // l is of type Array < Int >
trace(indexOf(8, l));
That traces 3 or with another kind of array:
var ls = [???A???,???B???,???C???,???D???]; // ls is of type Array < String >
trace(indexOf(???C???, ls));
It traces 2 .
Constraints on Type Parameters
Being generic can be useful; being too generic can be confusing. For this reason, haXe provides a way to
restrict the class parameters to some types only. Constraint parameters use the syntax illustrated in
Figure 5 - 7 .
class Name
access
modifier
multiple constraints for the
same type parameter are
grouped in parenthesis
Figure 5-7
The use of rounded parentheses is mandatory to disambiguate when more than one class parameter is
used. Multiple constraints are usually the combination of one class and one or more interfaces; the type
T must satisfy all of the listed constraints. The type constraints are not limited to classes and can also be
applied to type parameters for interfaces, enum s, and typedef s.

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L. McColl-Sylvester and F. Ponticelli

"Professional haXe and Neko"