Dart equivalent syntax-CodePudding

Dart Language

What is the equivalent operator for the "as" operator in type checking during runtime?

var foo = new Teacher();
var bar = new Student();
like (foo as Teacher);

Output

Instance ofTteacher

CodePudding user response：

The equivalent operator is "is" (foo is Teacher) should return true or false accordingly if foo is of type Teacher or otherwise.

CodePudding user response：

Key word as is used for type conversion.

If you want to check foo is Teacher or not:

print(foo is Teacher);
print(bar is Student);

If you just want to get Type of foo:

final fooType = foo.runtimeType;
final barType = bar.runtimeType;
print(fooType == barType);

Both fooType and barType is instance of Type.