Lua：函數和用戶輸入？

Question

我想在lua中做一個簡單的程序，目的是根據用戶輸入返回一個具有某些值的字符串，但是我遇到了腳本編寫問題。

例如，如果我編譯

person1 = { 
name = "bob" , 
age = 70 , 
hair = "black" , 
}; 
person2 = { 
name = "dan", 
age = 40 , 
hair = "blonde" , 
}; 
describe = function(parent) 
print ("hello " .. parent.name .. " your are " .. parent.age .. " years old 
and your hair color is " .. parent.hair) 
end 
print ("who are you") ; 
answer = io.read(); 
describe (answer) 

我希望，如果我寫person1作爲輸入腳本會返回一個字符串，上面寫着：

你好鮑勃你是70歲以上並且你的頭髮顏色是黑色

但是它反而會返回一個錯誤。

問題是，我能做些什麼來解決這個問題？在Lua中使用用戶輸入的正確方法是什麼？

Answer 1

您將不得不通過object函數，而不是名稱。或在全球範圍內搜索對象：

person1 = { 
    name = "bob" , 
    age = 70 , 
    hair = "black" , 
}; 
person2 = { 
    name = "dan", 
    age = 40 , 
    hair = "blonde" , 
}; 
describe = function(parent) 
    parent = _G[parent] 
    print ("hello " .. parent.name .. " your are " .. parent.age .. " years old and your hair color is " .. parent.hair) 
end 
print ("who are you") ; 
answer = io.read(); 
describe (answer) 

工作例如：http://ideone.com/UJxnpx