Mutation Operators
From GiderosMobile
Supported platforms: 
Available since: Gideros 2017.11
Description
Operators to mutate a value.
a += b Add 'b' to 'a'.
a -= b Subtract 'b from 'a'.
a *= b Multiply 'a' by 'b', result in 'a'.
a /= b Divide 'a' by 'b', result in 'a'.
a %= b The result of 'a%b' is placed in 'a'.
a ^= b The result of 'a^b' is placed in 'a'. ^ is faster than a=math.pow(a,b)
a ^= 0.5 The result is faster than a=math.sqrt(a)
Examples
Simple larger example
score+=1 -- faster and less typing than score=score+1
"getDistance" function:
--Non-optimized variant (5x slower):
function getDistance( x1, y1, x2, y2 )
return math.sqrt ( math.pow ( x2 - x1, 2 ) + math.pow ( y2 - y1, 2 ) )
end
--Optimized variant (5x faster):
function getDistance2( x1, y1, x2, y2 )
return ((x2 - x1)^2 + (y2 - y1)^2)^0.5
end
Methods |
EventsConstants |
