Mutation Operators

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 <syntaxhighlight lang="lua"> score+=1 -- faster and less typing than score=score+1 </source>

"getDistance" function (see also the new Math.distance function) <syntaxhighlight lang="lua"> --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 </source>

Methods

Events Constants

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