LessMap< M1, M2 > Class Template Reference

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LessMap< M1, M2 > Class Template Reference
Map Adaptors

## Detailed Description

### template<typename M1, typename M2>
class lemon::LessMap< M1, M2 >

This read-only map assigns `true` to the keys for which the corresponding value of the first map is less then the value of the second map. Its `Key` type is inherited from `M1` and its `Value` type is `bool`. `M2::Key` must be convertible to `M1::Key`.

If `m1` is of type `M1` and `m2` is of `M2`, then for

* LessMap<M1,M2> lm(m1,m2);
*

`lm[x]` will be equal to `m1[x]<m2[x]`.

The simplest way of using this map is through the lessMap() function.

See Also
  EqualMap

`#include <lemon/maps.h>`

Inheritance diagram for LessMap< M1, M2 >:
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## Public Types
typedef M1::Key | Key
typedef bool | Value
Public Types inherited from MapBase< M1::Key, bool >
typedef M1::Key | Key
| The key type of the map.
typedef bool | Value
| The value type of the map. (The type of objects associated with the keys).

## Public Member Functions
| LessMap (const M1 &m1, const M2 &m2)
| Constructor.
Value | operator[] (const Key &k) const

## Related Functions
(Note that these are not member functions.)
template<typename M1 , typename M2 >
LessMap< M1, M2 > | lessMap (const M1 &m1, const M2 &m2)
| Returns an `LessMap` class. More...