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Lua I/O question No.2: specific line index?

 
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Dr.Disrespect
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PostPosted: Fri Apr 15, 2016 6:20 pm    Post subject: Lua I/O question No.2: specific line index? Reply with quote
Is there a way to get the specific line index? or something can return the line index that shows at which line the program is. For example, I want to read the third line in a txt file, is there a function for that?
Thanks in advance.
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Zanzer
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PostPosted: Fri Apr 15, 2016 8:35 pm    Post subject: Reply with quote
Code:
local file = io.open("myfile.txt", "r")
local option = {}
for line in file:lines() do
  table.insert(option, line)
end

Code:
print(option[3])
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Dark Byte
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PostPosted: Sat Apr 16, 2016 1:50 am    Post subject: Reply with quote
Alternatively use a stringlist, load the textfile and then get line 2
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Redouane
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PostPosted: Sat Apr 16, 2016 5:26 am    Post subject: Reply with quote
Zanzer wrote:
Code:
local file = io.open("myfile.txt", "r")
local option = {}
for line in file:lines() do
  table.insert(option, line)
end

Code:
print(option[3])


Or this (because the 3rd line isn't too far from the beginning):
Code:

local file = io.open('myfile.txt','r');
local content = file:read'a'; -- read all the content of file
print(s:match'^.-\n.-\n([^\n]+)'); -- that is, skip first and second line, and print the 3rd one.
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Dr.Disrespect
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PostPosted: Sat Apr 16, 2016 1:15 pm    Post subject: Reply with quote
Sorry for the late reply, guys. Thanks a lot for all the help. Very Happy
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