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57 lines
1.1 KiB
57 lines
1.1 KiB
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include <iostream>
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#include <map>
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struct A {
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int a;
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};
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const A& get_a_ref() {
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static A a;
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return a;
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}
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A get_a() {
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A a;
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return a;
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}
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int test_a() {
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static auto x = get_a_ref();
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auto y = get_a_ref();
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auto copy_y = get_a_ref();
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auto z = get_a();
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return 0;
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}
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auto global_a = get_a_ref();
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void test_map() {
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std::map<int, int> intMap{{1, 2}, {3, 4}};
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for (auto p : intMap) {
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std::cout << p.first << "->" << p.second << std::endl;
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}
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for (auto copy_p : intMap) {
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std::cout << copy_p.first << "->" << copy_p.second << std::endl;
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}
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for (const auto& p : intMap) {
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std::cout << p.first << "->" << p.second << std::endl;
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}
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}
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int helper_ce(int x) { return 2 * x; }
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int test_const_exp(int x) {
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int i = helper_ce(x); // notconst exp
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int j = helper_ce(2); // not const exp
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int k = 2 * 3; // const exp
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int y = x + x; // not const exp
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return 0;
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}
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