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2
string.upper case not detecting when the string is upper case?
01 | function theissue(l) |
02 | --yea basically this wont detect if the string is upper case or lower case i have no idea what im doing wrong here |
03 | local typ = "" |
04 | if string.upper(l) then |
05 | typ = "upper" |
06 | else |
07 | typ = "lower" |
08 | end |
09 | print(typ) |
10 | end |
Basically it wont detect if the string is upper case i dont know what i am doing wrong but apparently im doing something wrong i guess
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else is not necessary DeceptiveCaster 3761 — 6y
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for one, dont make the name of the first parameter "1", the lua parser is going to see that as a number, and a variable name fanofpixels 718 — 6y
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thats actually the letter L User#23365 30 — 6y
2 answers
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1
string.upper() only just returns the string with all the letters in uppercase, it doesnt return if theres uppercase nor lowercase letters inside the string. you'd use string.match() and the %u pattern.
1 | local function theissue(L) -- use local functions |
2 | local typ |
3 |
4 | if string.match(L, "%u") then |
5 | typ = "upper" |
6 | else |
7 | typ = "lower" |
8 | end |
9 | end |
though this would only detect if theres a letter thats uppercase, not the entire string. if you'd want to find out if the entire string is uppercase then you could loop through it.
01 | local function theissue(L) |
02 | local typ = "upper" |
03 |
04 | for letter in string.gmatch(L, "%a") do |
05 | if not string.match(letter,"%u") then -- if it finds a lowercase letter |
06 | typ = "lower" |
07 | break -- breaks the loop |
08 | end |
09 | end |
10 |
11 | print(typ) |
12 | end |
the %a pattern is every letter in a string.
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thank you it works but how do i do the thingy that it says answered tratoi 7 — 6y
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its under the answer? User#23365 30 — 6y
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thanks tratoi 7 — 6y
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1
Here's a function to check if it is uppercase.
1 | function IsUpper(s) |
2 | return (s == string.upper(s)); |
3 | end |
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why the semicolons User#24403 69 — 6y
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It's required to end a statement with it in alot of languages and is good practice to end a statement with it even if the language doesn't require it. bludud1234 40 — 6y
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In Lua it's considered bad practice by some, but it's mostly personal preference, personally I think it looks neater but I don't tend to use it ;p turtle2004 167 — 6y
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Yeah, it's just for neatness and to make the code easier to read, but I'd never say that it's bad practice to use them. bludud1234 40 — 6y