07_method_isinstanceof.md

isinstanceof method

The isinstanceof method is a general method for all of classes. this method can check that an object is in instanceof a class.

For example:

class Hi
endclass

$a = Hi()

println($a->isinstanceof(Hi))

output:

True

the above output(True) means that the $a object is a instance from class Hi.

Another example:

class Father
endclass

# class Child is child of class Father
class Child < Father
endclass

$a = Child()

println($a->isinstanceof(Father))

output:

True

The above output means that the $a object is instance of class Father.

But in this example:

class Foo
endclass

class Bar
endclass

$a = Bar()

println($a->isinstanceof(Foo))

output:

False

Because class Bar haven't any relation with class Foo.

Also you can pass argument of this method as string:

class Foo
endclass

$foo = Foo()
println($foo->isinstanceof('Foo')) # the `Foo` is a string
#println($foo->isinstanceof(Foo))

Use classes for function typed arguments

For example:

class Person
    func __init__(string $name)
        $this->name = $name
    endfunc
endclass

func hello(Person $person)
    println('Hello ' + $person->name)
endfunc

hello(Person('parsa'))