47 lines
765 B
C++
47 lines
765 B
C++
#pragma once
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#include <memory>
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class Variable
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{
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public:
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Variable( double value = 0.0 )
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: m_value( std::make_shared< double >(value) )
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{
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}
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Variable( const Variable& v )
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: m_value( v.m_value )
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{
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}
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Variable& operator=( const Variable& v )
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{
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m_value = v.m_value;
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return *this;
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}
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double value() const
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{
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return m_value ? *m_value : 0.0;
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}
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void setValue(double x)
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{
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*m_value = x;
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}
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bool equals( const Variable& other )
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{
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return m_value == other.m_value;
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}
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private:
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std::shared_ptr< double > m_value;
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friend bool operator<( const Variable& lhs, const Variable& rhs )
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{
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return lhs.m_value < rhs.m_value;
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}
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};
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