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Date: Fri, 26 Jan 2018 15:58:07 -0800 (PST)
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Subject: Ceate a set (type?) of list of integers that varies at run time
From: Mace Ayres <mace.ayres@gmail.com>
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Xref: reader02.eternal-september.org comp.lang.ada:50171
Date: 2018-01-26T15:58:07-08:00
List-Id: <comp.lang.ada>

* Using the word set in mathetical sense.
I have an array 2D_array is Integer 1..9, 1..9 of my_record.  =E2=80=94 my_=
record has a boolean field locked.
Before looping/iteration across 2D_array (r,c), I want to restrict the colu=
mns (c) that I process, to bet something  like
for r in 1..9 loop
 for c (column) in (columns_to_check)

I have to create the enumeration type? list of columns to check and put in =
my columns_to_check container
and then only iterate these, maybe 1,2,3,7,8,9 =E2=80=94 do not check 4,5 o=
r 6

Need a function like get_columns_to_check
that iterates all 1..9 columns=20
if (r,c).locked is true=20
then do not have in final columns_to_check something (range, or enumeration=
 type)
either add to empty columns_to_check or delete from default columns_to_chec=
k that has 1..9;

what kind, type of an object can I use to hold the valid columns to check t=
hing-e columns_to_check
and that I can also iterate across.

Can I have a range that is not a continuous series of integers, NOT 1..9 bu=
t 1,2,5,6,7,9=20
and then some different subset of 1..9 the next time. Recalculating a new s=
et Columns_to_check for each outer loop of rows?

 ...