POD Assignment

POD (assignment)

Sometimes, it's desirable to assign a struct value as just a block of memory.

By default, this is the case, but for structs that have an __assign__ method, the assignment may do something different.

In order to have an assignment always assign values as if they were blocks of memory, the POD (plain-old-data) keyword can be used after the = operator.

Usage Example

import basics
pragma ignore_unused

struct Fancy ()

func main {
    fancy1 Fancy
    fancy2 Fancy = fancy1     // Will call '__assign__(*Fancy, Fancy)' if it exists
    fancy3 Fancy = POD fancy1 // Will copy raw unaltered memory
}

func __assign__(this *Fancy, new_value Fancy) {
    printf("Custom assignment '__assign__()' was called!\n")
}

Custom assignment '__assign__()' was called!