dart constructor assert
NonNegativePoint(this.x, this.y)
: assert(x >= 0),
assert(y >= 0) {
print('I just made a NonNegativePoint: ($x, $y)');
}dart constructor assert
NonNegativePoint(this.x, this.y)
: assert(x >= 0),
assert(y >= 0) {
print('I just made a NonNegativePoint: ($x, $y)');
}Copyright © 2021 Codeinu
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