On Tuesday, 26 January 2016 at 01:09:50 UTC, Igor wrote:
Is there any examples that shows how to properly allocate an object of a class type with the new allocators and then release it when desired?

There's an example of class object allocation in the std.experimental.allocator docs:

// Dynamically allocate a class object
static class Customer
{
    uint id = uint.max;
    this() {}
    this(uint id) { this.id = id; }
    // ...
}
Customer cust = theAllocator.make!Customer;
assert(cust.id == uint.max); // default initialized
cust = theAllocator.make!Customer(42);
assert(cust.id == 42);

To release the object (call the destructor and free the memory), call dispose():
theAllocator.dispose(cust);

You'll need to replace "theAllocator" with the allocator you want.

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