Question

State a fundamental benefit of using iterators. Justify your answer.

Answer 1

`Hey,

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Use of an iterator simplifies the code and makes it general.

Benefits of using this iterator API include:

• treats variables of all types, sizes, and shapes uniformly, whether they fit in memory or not, even if a single row won't fit in memory
• makes recursion unnecessary in handling arrays of arbitrary dimensionality
• accesses data efficiently, using largest blocks that will fit in memory buffer of designated size
• takes care of pesky leftovers, when smaller pieces are needed at the end of a loop to finish what's left
• works for either netCDF-3 or netCDF-4 enabled libraries
• takes advantage of chunking when present, reading a chunk-at-a-time rather than along dimension axes
• supports iterating over multiple variables concurrently, because each variable's iteration state is maintained in its own iterator structure

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