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Are there any reasons for methods such as |
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Answered by
cdrnet
Nov 9, 2016
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You mean as inplace operations? Mainly because matrices cannot change their dimension after creation. This is by design, but ultimately because even for sparse matrices all of these operations require to allocate and copy to new internal data structures (mostly arrays). If you need to insert and remove rows or columns often, do you really need a full matrix or would a list of vectors maybe be more appropriate? |
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cdrnet
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You mean as inplace operations? Mainly because matrices cannot change their dimension after creation. This is by design, but ultimately because even for sparse matrices all of these operations require to allocate and copy to new internal data structures (mostly arrays).
If you need to insert and remove rows or columns often, do you really need a full matrix or would a list of vectors maybe be more appropriate?