An ordered map is a type of associative array that maps keys to values, maintaining an order to the keys. The concept is similar to an indexed file with a single variable length key and a single variable length data structure (either a simple string or a multi-member structure), with no duplicate keys allowed.

History

2015 July, A-Shell 6.1.1414, compiler edit 742:  Add ordmap(varstr;varx) and .ISNULL(var)

2013 June, A-Shell 6.1.1354, compiler edit 638:  .CLEAR function added

2012 June, A-Shell 6.1.1300:  Ordered maps introduced; (varstr;varstr) only