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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
class Callback {
public:
virtual ~Callback() { }
virtual std::string run() { return "Callback::run"; }
};
class Caller {
private:
Callback *callback_;
public:
Caller(): callback_(0) { }
~Caller() { delCallback(); }
void delCallback() { delete callback_; callback_ = 0; }
void setCallback(Callback *cb) { delCallback(); callback_ = cb; }
std::string call();
};
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