terbary de fléchette
int minVal = (a < b) ? a : b; // if(a < b) {minVal = a;} else {minVal = b;}
var x = y ?? z; // assign y to x if y is not null, else z
var x ??= y; // assign y to x only if x is null
myObject?.myProp // (myObject != null) ? myObject.myProp : null
myObject?.myProp?.someMethod() // chainable
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