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How do calls such as math.random(min, max) work without passing itself as first argument?
From my knowledge,
obj:method(...)
is syntax sugar (a nicer way to write something else) for this code:
obj.method(obj, ...)
So then how do function calls such as math.random(min, max) not fail even if math isn't passed as first argument?
And when calling random as a method it fails with the error:
wrong number of arguments
If someone can explain to me how it works it would be appreciated.
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Question
So then how do function calls such as math.random(min, max) not fail even if math isn't passed as first argument?
Whats happening.
Because when you call the method, its passing self as the first argument to the random function in the math class. So you're essentially trying to call math.random(math, min) when you do math:random(min, max)
Example
local a = {}
function a.b(x, y)
print(x, y)
end
a.b(1, 2)
a:b(1, 2)
This will output
1 2
table: 0x199f490 1