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love.filesystem:setIdenity() error
Posted: Sun Mar 27, 2011 8:54 pm
by LuaWeaver
Whenever I use this code to try and understand love.filesystem, it creates an error.
Code: Select all
local text="If this shows, it did not work."
function love.load()
love.filesystem:setIdentity("TEST") --Right here! It says "main.lua:4: Calling 'setIdentity' on bad self. (string expected, got table)" "TEST" is a table I guess?
local h=love.filesystem:newFile("text.txt")
h:open("w")
h:write("If this shows, it worked")
h:close()
h:open("r")
text=h:read()
end
function love.draw()
love.graphics:print(text, 20, 20)
end
This is all the code. Again, here is the error. main.lua:4: Calling 'setIdentity' on bad self. (string expected, got table)
Re: love.filesystem:setIdenity() error
Posted: Sun Mar 27, 2011 8:57 pm
by Taehl
You're calling it wrong. It should be love.filesystem.setIdentity(name). Note how it uses only periods, not colons. Colons, in Lua, mean something completely different. Likewise, don't use a colon for love.graphics.print().
Re: love.filesystem:setIdenity() error
Posted: Sun Mar 27, 2011 9:00 pm
by LuaWeaver
Oh, thanks.
. I am using it ROBLOX STYLE. Still, never go there. They locked up like %25 percent of Lua!
Re: love.filesystem:setIdenity() error
Posted: Sun Mar 27, 2011 9:19 pm
by leiradel
Just to help LuaWeaver better understand the difference.
This code calls the setIdentity function which lives in the filesystem table which in turn lives in the love table which is a global variable (meaning it lives in the globals table):
This code calls the setIdentity function the same way as described before, but adds the value in the left of the colon as an automatic first parameter to the call:
which is identical to
Code: Select all
love.filesystem.setIdentity(filesystem, name)
That's way the error says it was expecting a string for the first parameter but found a table instead.
Re: love.filesystem:setIdenity() error
Posted: Sun Mar 27, 2011 11:15 pm
by BlackBulletIV
Rule of thumb: If it's under love.*, use a dot. If it's something created via love.*.new*, use a colon.
leiradel wrote:Code: Select all
love.filesystem.setIdentity(filesystem, name)
More precisely:
Code: Select all
love.filesystem.setIdentity(love.filesystem, name)