Class Poco::Util::Units::Value

Library: Util
Package: Units
Header: Poco/Util/Units.h

Description

A Value with a unit.

V is the type you are storing
U is the unit of the Value

This class is usually not used directly; client code should use the typedef'd instantiations defined in the Values and Constants namespace.

Example:

using namespace Poco::Util::Units::Values;

std::cout << "One mile is " << km(mile(1)) << std::endl;
    // Output: One mile is 1.60934 km

std::cout << "Flow rate is " << m3(mile(1)*inch(80)*foot(9))/s(minute(5));
    // Output: Flow rate is 29.9026 (m)^3.(s)^-1

hours h;
h = cm(3);   // Compile-time error: incompatible units
h = 4;       // Compile-time error: 4 of what?
h = days(4); // Ok: h is 96 hours

Member Summary

Member Functions: get, operator !=, operator *, operator *=, operator +, operator ++, operator +=, operator -, operator --, operator -=, operator /, operator /=, operator <, operator <=, operator =, operator ==, operator >, operator >=

Types

Unit

typedef U Unit;

ValueType

typedef V ValueType;

Constructors

Value

Value

explicit Value(
const ValueType & v
);

Value

template < typename OV, typename OU > Value(
const Value < OV, OU > & v
);

Member Functions

get

const ValueType & get() const;

operator !=

template < typename OV, typename OU > bool operator != (
const Value < OV, OU > & other
) const;

operator *

template < typename OV, typename OU > Value < V, Compose < U, OU > > operator * (
const Value < OV, OU > & other
) const;

operator *

Value operator * (
const ValueType & v
) const;

operator *=

Value & operator *= (
const ValueType & v
);

operator +

template < typename OV, typename OU > Value operator + (
const Value < OV, OU > & other
) const;

operator ++

Value & operator ++ ();

operator ++

Value operator ++ (
int
);

operator +=

template < typename OV, typename OU > Value & operator += (
const Value < OV, OU > & other
);

operator -

template < typename OV, typename OU > Value operator - (
const Value < OV, OU > & other
) const;

operator -

Value operator - () const;

operator --

Value & operator -- ();

operator --

Value operator -- (
int
);

operator -=

template < typename OV, typename OU > Value & operator -= (
const Value < OV, OU > & other
);

operator /

template < typename OV, typename OU > Value < V, Compose < U, Power < OU, - 1 > > > operator / (
const Value < OV, OU > & other
) const;

operator /

Value operator / (
const ValueType & v
) const;

operator /=

Value & operator /= (
const ValueType & v
);

operator <

template < typename OV, typename OU > bool operator < (
const Value < OV, OU > & other
) const;

operator <=

template < typename OV, typename OU > bool operator <= (
const Value < OV, OU > & other
) const;

operator =

template < typename OV, typename OU > Value & operator = (
const Value < OV, OU > & other
);

operator ==

template < typename OV, typename OU > bool operator == (
const Value < OV, OU > & other
) const;

operator >

template < typename OV, typename OU > bool operator > (
const Value < OV, OU > & other
) const;

operator >=

template < typename OV, typename OU > bool operator >= (
const Value < OV, OU > & other
) const;