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 InputDecoration typedOther = other;
return typedOther.icon == icon
&& typedOther.labelText == labelText
&& typedOther.labelStyle == labelStyle
&& typedOther.helperText == helperText
&& typedOther.helperStyle == helperStyle
&& typedOther.hintText == hintText
&& typedOther.hintStyle == hintStyle
&& typedOther.errorText == errorText
&& typedOther.errorStyle == errorStyle
&& typedOther.errorMaxLines == errorMaxLines
&& typedOther.hasFloatingPlaceholder == hasFloatingPlaceholder
&& typedOther.isDense == isDense
&& typedOther.contentPadding == contentPadding
&& typedOther.isCollapsed == isCollapsed
&& typedOther.prefixIcon == prefixIcon
&& typedOther.prefix == prefix
&& typedOther.prefixText == prefixText
&& typedOther.prefixStyle == prefixStyle
&& typedOther.suffixIcon == suffixIcon
&& typedOther.suffix == suffix
&& typedOther.suffixText == suffixText
&& typedOther.suffixStyle == suffixStyle
&& typedOther.counterText == counterText
&& typedOther.counterStyle == counterStyle
&& typedOther.filled == filled
&& typedOther.fillColor == fillColor
&& typedOther.errorBorder == errorBorder
&& typedOther.focusedBorder == focusedBorder
&& typedOther.focusedErrorBorder == focusedErrorBorder
&& typedOther.disabledBorder == disabledBorder
&& typedOther.enabledBorder == enabledBorder
&& typedOther.border == border
&& typedOther.enabled == enabled
&& typedOther.semanticCounterText == semanticCounterText;
}