chickadee » sparse-vectors » sparse-vector-ref

sparse-vector-ref SPARSE-VECTOR INDEXprocedure
*sparse-vector-ref SPARSE-VECTOR INDEXprocedure

Returns the element at INDEX. If the element at INDEX has not been set, (sparse-vector-ref INDEX) returns the DEFAULT. The *sparse-vector-ref variant does not perform argument checking.

INDEX ; uinteger ; integer in [0 ...).

An O(m) operation where m is ((log/base storage-node-size) INDEX).