Foam::HashSetOps Namespace Reference

Various operations for HashSet. More...

Classes
struct	plusEqOp
	Combine HashSet operation. Equivalent to 'a |= b'. More...

Functions
labelHashSet	used (const bitSet &select)
	Convert a bitset to a labelHashSet of the indices used.
labelHashSet	used (const UList< bool > &select)
	Convert a list of bools to a labelHashSet of the indices used.
bitSet	bitset (const labelHashSet &locations)
	Transform the on locations to a bitSet.
List< bool >	bools (const labelHashSet &locations)
	Transform the on locations to a boolList, with true for each non-negative location and false for all others.

Detailed Description

Various operations for HashSet.

Function Documentation

used() [1/2]

Foam::labelHashSet used

(

const bitSet &

select

)

Convert a bitset to a labelHashSet of the indices used.

Parameters

select

the bitset for which an on entry corresponds to an index in the output labelHashSet

Returns

a labelHashSet of the selected indices

This is equivalent of the following code, but more efficiently implemented.

bitSet select = ...;
return labelHashSet(select.toc());

Definition at line 26 of file HashOps.C.

References UList< T >::any(), HashSet< Key, Hash >::insert(), and HashTable< T, Key, Hash >::reserve().

Referenced by polyTopoChange::changeMesh(), dynamicRefineFvMesh::init(), and polyTopoChange::makeMesh().

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used() [2/2]

Foam::labelHashSet used

(

const UList< bool > &

select

)

Convert a list of bools to a labelHashSet of the indices used.

Parameters

select

the boolList for which a true entry corresponds to an index in the output labelHashSet

Returns

a labelHashSet of the selected indices

Definition at line 44 of file HashOps.C.

References HashSet< Key, Hash >::insert(), and UList< T >::size().

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bitset()

Foam::bitSet bitset

(

const labelHashSet &

locations

)

Transform the on locations to a bitSet.

Ignored any negative values (invalid positions in a bitset).

Parameters

locations

the list of positions corresponding to an on bit.

Returns

a bitset

See also

BitSetOps::create for other possibilities

Definition at line 63 of file HashOps.C.

References HashSet< Key, Hash >::begin(), HashSet< Key, Hash >::end(), and bitSet::setMany().

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bools()

Foam::List< bool > bools

(

const labelHashSet &

locations

)

Transform the on locations to a boolList, with true for each non-negative location and false for all others.

Parameters

locations

the list of positions corresponding to an on bit.

Returns

a boolList

Note

The operation necessarily discards any negative values since these are invalid positions in a boolList.

Definition at line 72 of file HashOps.C.

References HashSet< Key, Hash >::begin(), HashSet< Key, Hash >::end(), and Foam::max().

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