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require ("xxx") problem

require ("xxx") problem

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Posted by Tkl1129 Hong Kong (43 posts) bio

Date Tue 10 Jan 2012 07:13 AM (UTC)

Message

While I'm writing a code...
The case I have to access 2 .lua files..

1. db_map.lua (Contain the Map data in Lua table format)
2. f_path.lua (Contain the function code for path function)

normally when I write a code, I will start with require


function path_gen(a,b)
require("db_map")

local x = a
local y = b
local x1 = string.gsub(x,"%d+","")
local y1 = string.gsub(y,"%d+","")

local p_back = Map[x1][x].Back
local p_a1 = Map[x1][x].Path
local p_a2 = Map[y1][y].Path
local p_go = Map[y1][y].Go

print(p_back)
print(p_a1)
print(p_a2)
print(p_go)

end

This works...but what if I want to add other function into this code , the code was store inside the "f_path.lua"

When I add


function path_gen(a,b)
require("db_map")
require("f_path")

local x = a
local y = b
local x1 = string.gsub(x,"%d+","")
local y1 = string.gsub(y,"%d+","")

.......
............
local z = path_mix(x,y)

The function "path_mix" was store inside f_path, when I run this code, it occur error said f_path.lua not found...

so strange, cannot run 2 x lua file at the same time?
how it solve or write code in otherway? Thanks.

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Posted by

Nick Gammon Australia (22,989 posts)

bio Forum Administrator

Date

Reply #1 on Tue 10 Jan 2012 07:21 PM (UTC)

Message

Where are these two .lua files stored? In the same place as each other? What is that place?

- Nick Gammon

www.gammon.com.au, www.mushclient.com

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Posted by Tkl1129 Hong Kong (43 posts) bio

Date Reply #2 on Wed 11 Jan 2012 01:05 AM (UTC)

Message

inside the lua folder

when I run "db_map"...inside are Lua table data...
it's work

or I seperate run the "f_path"...inside are functions...
it's work too

but when I run


require("db_map")
require("f_path")

the code when run the function which inside "f_path", it return "nil"....

so wanna ask is that not appropriate to run 2 lua together? or have another method like "module"

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Posted by

Fiendish USA (2,514 posts)

bio Global Moderator

Date

Reply #3 on Wed 11 Jan 2012 01:53 AM (UTC)

Message

I do multiple requires all the time. Does one of your required files change the working directory?

https://github.com/fiendish/aardwolfclientpackage

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Posted by

Tkl1129 Hong Kong (43 posts)

bio

Date

Reply #4 on Wed 11 Jan 2012 02:00 AM (UTC)

Message

so strange,
maybe I try to do more testing first.

By the way, do all functions keep in *.lua good?
or maybe use "module" function is more easy to manage?

just want to share and learn you guys's preference..thanks.

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