import std.stdio;
class carry(TResult, TParams...) {
public this(TResult delegate(TParams) _f) {
f = _f;
}
public auto opCall(TParams[0] para) {
static if (TParams.length > 1) {
return new carry!(TResult, TParams[1 .. $])( (TParams[1 .. $] args) { return f(para, args); } );
} else {
return f(para);
}
}
public TResult delegate(TParams) f;
}
void main() {
auto f = new carry!(int, int, int, int, int)( (int a, int b, int c, int d) { return a+b+c+d; } );
writeln(f(1)(2)(3)(4));
}
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