Agena

agena >> `The Power of Procedural Programming` 7.0.0 Vega, February 24, 2026 - The `with` clause to short-cut functions and the `with` clause to the `if` operator have been extended and allow for more than one assignment statement of local, intermediate variables: they fully evaluate each assignment statement before proceeding to the next so that you can use the newly assigned variables there. Separate the assignment statements with semicolons: > f := <: x, y with t := 1; u := t + 2; v := u + 3 -> print(x, y, t, u, v) :> > f(1, 2): 1 2 1 3 6 > f := <: x, y with t := 1; u, v := t + 1, t + 2 -> print(x, y, t, u, v) :> 1 2 1 2 3 > return with t := 1; u, v := t + 1, t + 2 -> if t > 0 then u + v else u - v fi; 5 - Instead of the `scope`/`epocs` keywords you can now create a scope with `begin` and finish it with `end`: > begin print('I am a scope.'); print('Me, too !') > end; - New `tables.auto` creates Perl-style automagic tables (also called autovivication). An automagic table creates subtables on demand, so that you do not have to set them up manually. Example: > a := tables.auto(); > a.b.c.d := 'a.b and a.b.c are automatically created' This is short for > a := []; > create table a.b; > create table a.b.c; > a.b.c.d := 'a.b and a.b.c are automatically created' - The default number of digits in the _output_ of Agena numbers can now be controlled by the `Digits` environment variable. If set to a non-negative integer by the user, it will always supersede the environ.kernel('digits') setting in the entire session. Note that this does not control the precision of a computation, but only the output created by the pretty-printer. > Pi: 3.1415926535898 > Digits := 17 > Pi: 3.1415926535897931 > Digits := 5 > Pi: 3.1416 - Tweaked `dual.arctan2` and `dual.beta` a bit. - Unused and undocumented `dual` functions have been removed. - This release has been Valgrind-checked on x86 and x64 Linux to ensure there are no internal errors or memory leaks.