string.find - strange result

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JC
Posts: 16
Joined: Fri Jun 02, 2006 9:30 am

string.find - strange result

Post by JC »

I am getting a 'strange' result using string.find to find a '.' (full stop) in a string. The function always returns 1 regardless of where the full stop is. The code below illustrates the issue. It prints two numbers the top one should be the position of the full stop within the string "abcdef.", but always returns 1.
The second line shows the correct behaviour for the letter e. Am I doing something silly here ?

Code: Select all

screen:print(10,10,string.find("abcdef.","."),Color.new(255,255,255))
screen:print(10,20,string.find("abcdef.","e"),Color.new(255,255,255))


screen:flip()
screen.waitVblankStart()


pad = Controls.read()
while not pad:start() do
  pad = Controls.read()
end
TIA,
JC
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Drakonite
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Posts: 989
Joined: Sat Jan 17, 2004 1:30 am
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Post by Drakonite »

string.find doesn't just search for a string, it searches for a pattern. This page gives more info. If you do something such as string.find("abcdef.",".",1,true) it will disable pattern matching and just search for the string.
Shoot Pixels Not People!
Makeshift Development
JC
Posts: 16
Joined: Fri Jun 02, 2006 9:30 am

Post by JC »

Thanks Drakonite,

Code: Select all

string.find("abcdef.",".",1,true) 


Does the trick.
Regards,
JC
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