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Chapter 28 Performance Issues is a scalar. In the case of an array of scalars, the following code shows what you do to increment a value in an array. This is quite efficient because it is not necessary to generate extra copies of the overall array. Also, the element produced by the Index Array function is a scalar, which can be created and manipulated efficiently. The same is true of an array of clusters, assuming the cluster contains only scalars. In the following diagram, manipulation of elements becomes a little more complicated, because you now must use Unbundle and Bundle. However, because the cluster is probably small (scalars use very little memory), there is no significant overhead involved in accessing the cluster elements and replacing the elements back into the original cluster. If you have an array of clusters where each cluster contains large sub-arrays or strings, indexing and changing the values of elements in the cluster can be more expensive in terms of memory and speed. G Programming Reference Manual 28-30 © National Instruments Corporation
