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Use local variables for function examples

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Currently, the example functions create variables in global
scope.
This commit is contained in:
Rob Hoelz 2013-09-04 11:43:09 +02:00
parent 57e0ac7e95
commit edea434d89
1 changed files with 4 additions and 4 deletions
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8
lua.html.markdown
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@ -210,7 +210,7 @@ f2 = {a = 2, b = 3}
metafraction = {} metafraction = {}
function metafraction.__add(f1, f2) function metafraction.__add(f1, f2)
sum = {} local sum = {}
sum.b = f1.b * f2.b sum.b = f1.b * f2.b
sum.a = f1.a * f2.b + f2.a * f1.b sum.a = f1.a * f2.b + f2.a * f1.b
return sum return sum
@ -273,7 +273,7 @@ eatenBy = myFavs.animal -- works! thanks, metatable
Dog = {} -- 1. Dog = {} -- 1.
function Dog:new() -- 2. function Dog:new() -- 2.
newObj = {sound = 'woof'} -- 3. local newObj = {sound = 'woof'} -- 3.
self.__index = self -- 4. self.__index = self -- 4.
return setmetatable(newObj, self) -- 5. return setmetatable(newObj, self) -- 5.
end end
@ -308,7 +308,7 @@ mrDog:makeSound() -- 'I say woof' -- 8.
LoudDog = Dog:new() -- 1. LoudDog = Dog:new() -- 1.
function LoudDog:makeSound() function LoudDog:makeSound()
s = self.sound .. ' ' -- 2. local s = self.sound .. ' ' -- 2.
print(s .. s .. s) print(s .. s .. s)
end end
@ -329,7 +329,7 @@ seymour:makeSound() -- 'woof woof woof' -- 4.
-- If needed, a subclass's new() is like the base's: -- If needed, a subclass's new() is like the base's:
function LoudDog:new() function LoudDog:new()
newObj = {} local newObj = {}
-- set up newObj -- set up newObj
self.__index = self self.__index = self
return setmetatable(newObj, self) return setmetatable(newObj, self)