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Referencing variables with strings?
I was wondering if there was any way to reference a variable with a string, aside from having the string define a value in an array. Additionally, I want to be able to do it without roblox-specific methods, so no "FindFirstChild()" either. Any ideas?
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I'm not sure what you're trying to do. What do arrays have to do with it? Strings cannot define values? 1waffle1 2908 — 8y
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Referencing variables with strings. For example, say var1 is a variable in my script. Is there any way I can use a string to reference it with the corresponding string, being "var1"? aquathorn321 858 — 8y
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What do you mean by "reference it?" do you mean like having a string which contains the name of a variable and have it replace it with the actual variable? or just access the variable through its string name like indexing it from the function environment? 1waffle1 2908 — 8y
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The second of the two. aquathorn321 858 — 8y
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It sounds like you might be using Lua 5.2 (which is not Roblox). In that case, your solution would look like this:
test=5 print(_ENV["test"])
which you can test here.
otherwise adark's Lua 5.1 solution will work in Roblox.
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3
As long as the variable is not declared using the keyword local. You can use getfenv to get a table of all the global variables in the current script:
var1 = 23 local var2 = 57 print(getfenv()["var1"]) -- 23 print(getfenv()["var2"]) -- nil
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I tested it myself, and though all variables are global, when I attempt to reference a variable with getfenv() it returns the error "attempt to call global 'getfenv'(a nil value)." aquathorn321 858 — 8y
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In that case it sounds like you aren't using Roblox and you're in some other program that is running Lua 5.2, which no longer uses getfenv or setfenv and instead uses a new mechanic for handling function environments. 1waffle1 2908 — 8y
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Yeah, I asked for something that isn't roblox-specific. thanks anyways aquathorn321 858 — 8y
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getfenv() isn't ROBLOX-specific, it's Lua 5.1-specific. adark 5487 — 8y