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-rw-r--r--third_party/immer/example/vector/gc.cpp37
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diff --git a/third_party/immer/example/vector/gc.cpp b/third_party/immer/example/vector/gc.cpp
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--- a/third_party/immer/example/vector/gc.cpp
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-//
-// immer: immutable data structures for C++
-// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
-//
-// This software is distributed under the Boost Software License, Version 1.0.
-// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
-//
-
-// include:example/start
-#include <immer/heap/gc_heap.hpp>
-#include <immer/heap/heap_policy.hpp>
-#include <immer/memory_policy.hpp>
-#include <immer/refcount/no_refcount_policy.hpp>
-#include <immer/vector.hpp>
-
-#include <iostream>
-
-// declare a memory policy for using a tracing garbage collector
-using gc_policy = immer::memory_policy<immer::heap_policy<immer::gc_heap>,
-                                       immer::no_refcount_policy,
-                                       immer::gc_transience_policy,
-                                       false>;
-
-// alias the vector type so we are not concerned about memory policies
-// in the places where we actually use it
-template <typename T>
-using my_vector = immer::vector<T, gc_policy>;
-
-int main()
-{
-    auto v =
-        my_vector<const char*>().push_back("hello, ").push_back("world!\n");
-
-    for (auto s : v)
-        std::cout << s;
-}
-// include:example/end