25 lines
826 B
Lua
25 lines
826 B
Lua
str = "abcdefghijklmnopqrstuvwxyz"
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n, m = 5, 15
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print( string.sub( str, n, m ) ) -- efghijklmno
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print( string.sub( str, n, -1 ) ) -- efghijklmnopqrstuvwxyz
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print( string.sub( str, 1, -2 ) ) -- abcdefghijklmnopqrstuvwxy
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pos = string.find( str, "i" )
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if pos ~= nil then print( string.sub( str, pos, pos+m ) ) end -- ijklmnopqrstuvwx
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pos = string.find( str, "ijk" )
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if pos ~= nil then print( string.sub( str, pos, pos+m ) ) end-- ijklmnopqrstuvwx
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-- Alternative (more modern) notation
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print ( str:sub(n,m) ) -- efghijklmno
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print ( str:sub(n) ) -- efghijklmnopqrstuvwxyz
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print ( str:sub(1,-2) ) -- abcdefghijklmnopqrstuvwxy
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pos = str:find "i"
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if pos then print (str:sub(pos,pos+m)) end -- ijklmnopqrstuvwx
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pos = str:find "ijk"
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if pos then print (str:sub(pos,pos+m)) end d-- ijklmnopqrstuvwx
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