unsigned NxsCharactersBlock::ApplyExset ( NxsUnsignedSet &  exset  )  [virtual]

excludes all of the indices in exset.

Excludes characters whose indices are contained in the set `exset'.

indices should be in the range [0, nchar)

number of characters actually excluded (some may have already been excluded).

Implements NxsCharactersBlockAPI.

Definition at line 3501 of file nxscharactersblock.cpp.

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