🔥 Poll: Which features of Swift stand out most to you?

Using Swift
35

Indeed, looks ok in C++:

struct Foo {
    const int x = 0;
    int y = 0;
};

struct Bar {
    const int x = 0;
    int y = 0;
    const Foo foo1 = Foo();
    Foo foo2 = Foo();
};

void test() {
    const Foo foo1 = Foo();
    Foo foo2 = Foo();
    const Bar bar1 = Bar();
    Bar bar2 = Bar();
    
    foo1.x = 1; // ❌ Cannot assign to non-static data member 'x' with const-qualified type 'const int'
    foo1.y = 1; // ❌ Cannot assign to variable 'foo1' with const-qualified type 'const Foo'
    foo2.x = 1; // ❌ Cannot assign to non-static data member 'x' with const-qualified type 'const int'
    foo2.y = 1;
    bar1.x = 1; // ❌ Cannot assign to non-static data member 'x' with const-qualified type 'const int'
    bar1.y = 1; // ❌ Cannot assign to variable 'bar1' with const-qualified type 'const Bar'
    bar1.foo1.x = 1; // ❌ Cannot assign to non-static data member 'x' with const-qualified type 'const int'
    bar1.foo1.y = 1; // ❌ Cannot assign to non-static data member 'foo1' with const-qualified type 'const Foo'
    bar1.foo2.x = 1; // ❌ Cannot assign to non-static data member 'x' with const-qualified type 'const int'
    bar1.foo2.y = 1; // ❌ Cannot assign to variable 'bar1' with const-qualified type 'const Bar'
    bar2.x = 1; // ❌ Cannot assign to non-static data member 'x' with const-qualified type 'const int'
    bar2.y = 1;
    bar2.foo1.x = 1; // ❌ Cannot assign to non-static data member 'x' with const-qualified type 'const int'
    bar2.foo1.y = 1; // ❌ Cannot assign to non-static data member 'foo1' with const-qualified type 'const Foo'
    bar2.foo2.x = 1; // ❌ Cannot assign to non-static data member 'x' with const-qualified type 'const int'
    bar2.foo2.y = 1;
}

We can still love it even if it's not unique!

2 Likes