gawk: Array Manipulation
16.4.11 Array Manipulation
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The primary data structure(1) in 'awk' is the associative array (
Arrays). Extensions need to be able to manipulate 'awk' arrays. The
API provides a number of data structures for working with arrays,
functions for working with individual elements, and functions for
working with arrays as a whole. This includes the ability to "flatten"
an array so that it is easy for C code to traverse every element in an
array. The array data structures integrate nicely with the data
structures for values to make it easy to both work with and create true
arrays of arrays (General Data Types).
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