あけおめ． import std.stdio; int f(alias F)(int x) { return F(x); } int g(int delegate(int) dg, int x) { return dg(x); } int h(int function(int) dg, int x) { return dg(x); } void main() { writeln(f!(x => x + 1)(1)); writeln(g(x => x + 1, 1…