供参考
在调试@replace Head时,我注意到自定义函数计算的返回值与标准函数相比是+1x :
myFunction = function({}, return(Expr(3*5)));
add custom functions (newcustom function("my custom", "function", function({}, return(Expr(3*5)))));
Show(myfunction());
Show(my custom:function())因此也许添加另一个Expr() ...
add custom functions (newcustom function("my custom", "function", function({}, return(Expr(Expr(3*5))))));
Show(my custom:function())