if then else in Ada

[philippekruchten]

Not an issue, just a comment...

The programming language Ada tried to refine the if-then-else:

• with an end if

• with an elsif (as a single word)
  https://www.adaic.org/resources/add_content/standards/05rm/html/RM-4-4.html#S0115

• and this combined with Boolean expressions having and then and or else.
  https://www.adaic.org/resources/add_content/standards/05rm/html/RM-4-4.html#S0115

provided quite sophisticated, and unambiguous forms of this statement.
:-)

Thanks for the slides, Erica.

Philippe

[ericfischer]

Thanks! That is a nice syntax for distinguishing short-circuit booleans from those where the whole expression is always evaluated.

I have used elsif many times thanks to its appearance in Perl, and elif in shell scripts.