e3b54c8023
Additionally, simplify the syntax for contracts specified in a
type parameter list: It is now not possible to provide explicit
type parameters to a contract in a type parameter list - they
are always implicit. For instance
func f(type P1, P2 C(P1, P2)) ...
must be written as
func f(type P1, P2 C) ...
If a different order or different types are desired for C,
a new "intermediate" contract must be declared, as in
contract C'(A, B) {
C(B, int) // here we allow type parameters
}
func f(type P1, P2 C')
This simplification will remove confusion if we decide to
allow individual contracts in type parameter lists, such as
func f(type P C, P1, P2 C') ...
In this case, C accepts one type parameter (and applies to P),
and C' accepts two type parameters and applies to P1 and P2.
The simplification avoids questions such as whether this code
should be permitted:
func f(type P C(P2), P1, P2 C'(P, P1)) ...
(i.e., can pass P2 to C, or P1 to C', etc.)
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README.md
The Go Programming Language
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