122 lines
3.0 KiB
C++
122 lines
3.0 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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// Date: Sun Sep 20 12:25:11 CST 2015
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#ifndef BVAR_VECTOR_H
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#define BVAR_VECTOR_H
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#include <ostream>
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#include <gflags/gflags_declare.h>
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namespace bvar {
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DECLARE_bool(quote_vector);
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// Data inside a Vector will be plotted in a same graph.
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template <typename T, size_t N>
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class Vector {
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public:
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static const size_t WIDTH = N;
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Vector() {
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for (size_t i = 0; i < N; ++i) {
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_data[i] = T();
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}
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}
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Vector(const T& initial_value) {
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for (size_t i = 0; i < N; ++i) {
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_data[i] = initial_value;
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}
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}
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void operator+=(const Vector& rhs) {
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for (size_t i = 0; i < N; ++i) {
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_data[i] += rhs._data[i];
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}
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}
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void operator-=(const Vector& rhs) {
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for (size_t i = 0; i < N; ++i) {
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_data[i] -= rhs._data[i];
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}
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}
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template <typename S>
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void operator*=(const S& scalar) {
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for (size_t i = 0; i < N; ++i) {
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_data[i] *= scalar;
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}
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}
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template <typename S>
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void operator/=(const S& scalar) {
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for (size_t i = 0; i < N; ++i) {
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_data[i] /= scalar;
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}
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}
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bool operator==(const Vector& rhs) const {
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for (size_t i = 0; i < N; ++i) {
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if (!(_data[i] == rhs._data[i])) {
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return false;
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}
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}
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return true;
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}
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bool operator!=(const Vector& rhs) const {
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return !operator==(rhs);
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}
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T& operator[](int index) { return _data[index]; }
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const T& operator[](int index) const { return _data[index]; }
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private:
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T _data[N];
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};
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template <typename T, size_t N>
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std::ostream& operator<<(std::ostream& os, const Vector<T, N>& vec) {
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if (FLAGS_quote_vector) {
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os << '"';
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}
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os << '[';
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if (N != 0) {
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os << vec[0];
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for (size_t i = 1; i < N; ++i) {
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os << ',' << vec[i];
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}
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}
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os << ']';
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if (FLAGS_quote_vector) {
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os << '"';
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}
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return os;
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}
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template <typename T>
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struct is_vector : public butil::false_type {};
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template <typename T, size_t N>
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struct is_vector<Vector<T,N> > : public butil::true_type {};
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} // namespace bvar
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#endif //BVAR_VECTOR_H
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