| AngelScript

Auto declarations

It is possible to use 'auto' as the data type of an assignment-style variable declaration.

The appropriate type for the variable(s) will be automatically determined.

    auto i = 18;         // i will be an integer
    auto f = 18 + 5.f;   // the type of f resolves to float
    auto anObject = getLongObjectTypeNameById(id); // avoids redundancy for long type names

Auto can be qualified with const to force a constant value:

    const auto i = 2;  // i will be typed as 'const int'

If receiving object references or objects by value, auto will make a local object copy by default. To force a handle type, add '@'.

    obj getObject() {
        return obj();
    }

    auto value = getObject();    // auto is typed 'obj', and makes a local copy
    auto@ handle = getObject();  // auto is typed 'obj@', and refers to the returned obj

The '@' specifier is not necessary if the value already resolves to a handle:

    obj@ getObject() {
        return obj();
    }

    auto value = getObject();   // auto is already typed 'obj@', because of the return type of getObject()
    auto@ value = getObject();  // this is still allowed if you want to be more explicit, but not needed

Auto handles can not be used to declare class members, since their resolution is dependent on the constructor.