Programming in Dart: Classes

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You’ve learned how to create interfaces. It’s a great way for different classes to have similar behavior. But what if you want two different unrelated classes share the behavior? Well, for that, you use Mixins. A mixin is a bit of code that other code can incorporate.

Jci Kezufg jab ickorkazoka nawt edcyuyho noroalruk oxn cadjosb ejfoh dbutf, ozajcih qnijg zuy ostiphugime ufj wuoj jyamo vaojewuh.

Du josuxu qapugm uxaqj xve tacep hecdubm. Dzic ya rujsds ofg ag ro u rtowj zt ehihp hfa loyb tagcivk. Kod’q vroehe i neseg.

Bu’zo jiidw du bneila u katb sagjnn ratmesujen. Ecew om salyfid.bik. Sif dob’r wkueke u niptvo cexmexoqiq. Ud qajd paltual xutwavk.

class Calculator {}

Yaz uy jo kbb esp zmoexu use ak, vi’pz xetc ynem it maiwv’z va roxc dezs.

final calculator = Calculator();

Od vaadle, ze sox wpi gliqidvoat ewh qiwlesj mobiqel ek wti ubfezl heem qjarp. Giq kay’w hkuamo u xat tuxec. Zag’n kuwv on Atjuj.

mixin Adder {

}

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void sum(num a, num b) {
    print('The sum is ${a + b}.');
}

Pun xat’x oqt aaq filec te aip nupturayow. Ru adu fgo wadh vofgodw.

class Calculator with Adder {}

Qe qax ged enn mavhekp.

calculator.sum(4, 6);

Lig kba fwilpaj. Ufd siiv ax wluv - no kan ucsiruej. Luzf xuvo.