I need to split a string and store it in an array. here i used string.gmatch method, and its splitting the characters exactly, but my problem is how to store in an array ? here is my script. my sample string format : touchedSpriteName = Sprite,10,rose
objProp = {}
for key, value in string.gmatch(touchedSpriteName,"%w+") do
objProp[key] = value
print ( objProp[2] )
end
if i print(objProp) its giving exact values.
Your expression returns only one value. Your words will end up in keys, and values will remain empty. You should rewrite the loop to iterate over one item, like this:
objProp = { }
touchedSpriteName = "touchedSpriteName = Sprite,10,rose"
index = 1
for value in string.gmatch(touchedSpriteName, "%w+") do
objProp[index] = value
index = index + 1
end
print(objProp[2])
This prints Sprite (link to demo on ideone).
Here's a nice function that explodes a string into an array. (Arguments are divider and string)
-- Source: http://lua-users.org/wiki/MakingLuaLikePhp
-- Credit: http://richard.warburton.it/
function explode(div,str)
if (div=='') then return false end
local pos,arr = 0,{}
for st,sp in function() return string.find(str,div,pos,true) end do
table.insert(arr,string.sub(str,pos,st-1))
pos = sp + 1
end
table.insert(arr,string.sub(str,pos))
return arr
end
Here is a function that i made:
function split(str, character)
result = {}
index = 1
for s in string.gmatch(str, "[^"..character.."]+") do
result[index] = s
index = index + 1
end
return result
end
And you can call it :
split("dog,cat,rat", ",")
Reworked code of Ricardo:
local function split (string, separator)
local tabl = {}
for str in string.gmatch(string, "[^"..separator.."]+") do
table.insert (tabl, str)
end
return tabl
end
print (unpack(split ("1234#5678#9012", "#")))
-- returns 1234 5678 9012
