如何在 OCAML 类中声明记录
我想在类中声明一条记录，如下所示：
class player (x, y)=
object(self)
type gun = {x:int; y:int; active:bool}
val guns = Array.create 5 {x=0; y=0; active=false}
....
但编译器声称这一行是语法错误： typegun = {x:in ....
当在类外部声明时，
type : gun = {x:int; y:int; active:bool}
class player (x, y)=
object(self)
val guns = Array.create 5 {x=0; y=0; active=false}
....
错误是：unbound valuegun。
那么有人知道如何用另一种方式达到相同的功能吗？ 谢谢你！
********** 解决了***
奇怪的是，现在当类型在外部声明时它就可以工作了，谢谢
I wanna declare a record inside a class as follows:
class player (x, y)=
object(self)
type gun = {x:int; y:int; active:bool}
val guns = Array.create 5 {x=0; y=0; active=false}
....
but the compiler claim that this line is syntax error : type gun = {x:in ....
when declared outside the class like this
type : gun = {x:int; y:int; active:bool}
class player (x, y)=
object(self)
val guns = Array.create 5 {x=0; y=0; active=false}
....
the error is : unbound value gun.
so anyone know how to reach the same functionality with another way?
thank you!
********* solved***
Bizare now it's working when the type is declared outside, thank you
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为什么不在类定义之外定义类型枪？
Why don't you define the type gun outside of the class definition?