Typecasting
Sometimes you need to convert between data types.
uint8 a = 5;
uint b = 6;
// throws an error because a * b returns a uint, not uint8:
uint8 c = a * b;
// we have to typecast b as a uint8 to make it work:
uint8 c = a * uint8(b);
In the above, a * b
returns a uint
, but we were trying to store it as a uint8
, which could cause potential problems. By casting it as a uint8
, it works and the compiler won't throw an error.
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