getfirst


Purpose
Get the first element of a range set or a list.
Synopsis
function getfirst(r:range):integer
function getfirst(l:list):type_of_l
Arguments
A range set
A list
Return value
The first element of the set or list.
Example
In this example the range set r is defined before its first and last elements are retrieved and displayed:
declarations
 r=2..8
end-declarations
  ...
writeln("First element of r: ", getfirst(r), 
        "\nLast element of r: ", getlast(r))
Further information
When applied to a list, the type of the function is the type of the list. An error is generated if the argument of the function is empty.
Related topics
getlast.


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