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3
How to 'slice' a string?
I know in python you can use the index of characters to 'slice' your string using square brackets, eg:
string = "This is my string" print (string[0:5])
Which would print 'This'.
I've tried doing this with Lua in the same way:
1 | local my_string = "This is a string" |
2 | print(my_string[:1]) |
Though I just get an error "unexpected symbol near ':'"
Any guidance on this would be appreciated =)
0
That would be acceptable in Python. However, as Blue has shown, getting different ranges of text is a bit different. DigitalVeer 1473 — 9y
1 answer
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4
Strings don't support [] in Lua (which is sort of a shame). Lua also doesn't support indexing by a "range" like Python.
For strings, you use string.sub to get a substring.
01 | local str = "abcdef" |
02 |
03 | -- everything from 3rd character on |
04 | print(str:sub(3) ) -- cdef |
05 |
06 | -- last three characters: |
07 | print(str:sub(-3) ) -- def |
08 |
09 | -- third to fifth characters: |
10 | print(str:sub(3, 5)) -- cde |
Note that string.sub(str, ...) and str:sub(...) are the same thing. You can use either.
0
Thank you =-) PredNova 130 — 9y