operator == method
- @override
The equality operator.
The default behavior for all Objects is to return true if and
only if this
and other
are the same object.
Override this method to specify a different equality relation on a class. The overriding method must still be an equivalence relation. That is, it must be:
-
Total: It must return a boolean for all arguments. It should never throw or return
null
. -
Reflexive: For all objects
o
,o == o
must be true. -
Symmetric: For all objects
o1
ando2
,o1 == o2
ando2 == o1
must either both be true, or both be false. -
Transitive: For all objects
o1
,o2
, ando3
, ifo1 == o2
ando2 == o3
are true, theno1 == o3
must be true.
The method should also be consistent over time, so whether two objects are equal should only change if at least one of the objects was modified.
If a subclass overrides the equality operator it should override the hashCode method as well to maintain consistency.
Implementation
@override
bool operator ==(dynamic other) {
if (identical(this, other))
return true;
if (other.runtimeType != runtimeType)
return false;
final TextStyle typedOther = other;
return inherit == typedOther.inherit &&
color == typedOther.color &&
fontFamily == typedOther.fontFamily &&
fontSize == typedOther.fontSize &&
fontWeight == typedOther.fontWeight &&
fontStyle == typedOther.fontStyle &&
letterSpacing == typedOther.letterSpacing &&
wordSpacing == typedOther.wordSpacing &&
textBaseline == typedOther.textBaseline &&
height == typedOther.height &&
locale == typedOther.locale &&
foreground == typedOther.foreground &&
background == typedOther.background &&
decoration == typedOther.decoration &&
decorationColor == typedOther.decorationColor &&
decorationStyle == typedOther.decorationStyle &&
listEquals(shadows, typedOther.shadows);
}