[cpp][szablony] no match for ‘operator=’

#include <iostream>
using namespace std;
template < typename T >
T minimum( const T & lhs, const T & rhs ) {
    return lhs < rhs ? lhs: rhs;
}
template < typename T >
class myClass {
public:
    myClass( int t ) {
        x = t;
    }
    T x;
    bool operator <( const myClass & Obj ) const {
        return this->x < Obj.x;
    }
    myClass & operator =( const myClass & k ) {
        if( this == & k ) return * this;
       
        this->x = k->x;
       
        return * this;
    }
};

int main() {
    int a = 4;
    int b = 3;
    int i = minimum( a, b );
    cout << i << endl;
   
    double a2 = 40.5;
    double b2 = 30.5;
    double i2 = minimum( a2, b2 );
    cout << i2 << endl;
   
    myClass < int > a3( 66 );
    myClass < int > b3( 99 );
    myClass < int > i3 = minimum( a3, b3 );
    cout << i3.x << endl;
   
    myClass < double > a4( 0.5 );
    myClass < double > b4( 0.1 );
    myClass < double > i4( 0 );
    i4 = minimum( a3, b3 );
    cout << i4.x << endl;
   
}

template < typename T >
class myClass {
public:
    myClass( int t ) {
        x = t;
    }
    T x;
    bool operator <( const myClass & Obj ) const {
        return this->x < Obj.x;
    }
    template < typename T2 > // <- tutaj nowy template ?
    myClass & operator =( const myClass & k ) {
        if( this == & k ) return * this;
       
        this->x = k->x;
       
        return * this;
    }
};