Changing String to Int Value, but it's not what you think

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#1

So, let’s say I have a string value, this string value being the image id of something (this is a random number but whatever)
“rbxassetid://89803213”
Now, what if I wanted to convert only the number part to an int value?

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#2

I don’t believe you can :confused: But I might be wrong

#3

Use string.sub?

string.sub(idString, 14, -1)
#4

im afraid i have
no idea
what you just did lol

#5

string.sub just returns a string between the given characters. Lets take an example.

local gamerString = "engineer"

string.sub(gamerString, 1, 4)
would return a string starting with the first character of the string, ending with the 4th character of the string.

#6

so it would return engi?

is the third parameter defaulted to the last part of the string? if so, since rbxassetid:// will always be the same amount of characters, could i just say string.sub(imageid, 14)?

#7

his works but doesn’t convert to a number. you can use tonumber.

tonumber(string.sub(idString, 14, -1))

you might also find this way more convenient

tonumber(string.match(idString, "%d+"))
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#8

I’m not sure if string ids have a fix length, but I wouldn’t bet on that being the case.

#9

the third paramater of string.sub() will default to -1, which indeed means that it will go till the end of the string

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#10

yeah, i thought about doing that eventually with the tonumber

now, what does the %d+ mean?

#11

Oh this post here might help

#12

https://developer.roblox.com/en-us/articles/string-patterns-reference

%d means number. + means one or more.

#13

%d will match a number and the + is there to let you match multiple characters of numbers

#14

so then in theory tonumber(string.sub(myString, 14)) should work?

#15

Yes. It should yea yea, it will work