Dijkstra on Ada

27 cpeterso 5 5/22/2025, 12:56:11 AM craftofcoding.wordpress.com ↗

Comments (5)

zombot · 58m ago
I can't make heads or tails of this.
erk__ · 39m ago
A better article that is actually about the competition is this one which was on HN the other day: https://iment.com/maida/computer/redref/

https://news.ycombinator.com/item?id=44048775

f1shy · 38m ago
Does somebody have more context about it? What were the other colors? This says absolutely nothing to me.
amszmidt · 31m ago
> What were the other colors?

ADA was designed around a competition between four companies, to make it unbiased the proposals got named by colour.

Honeywell was Green, Intermetrics was Red, SofTech was Blue, and SRI was Yellow. There where no other colors.

ggm · 4h ago
I have it in my mind that Wirth floated modula/modula-2 variants into the early round of Ada candidates but I can find nothing evident.

My back reasoning to it's truth is threefold:

1) He did a residency at York university relating to pascal and modula in teaching CS. That's why my first uni language was pascal. (He'd just left)

2) York used pascal and modula heavily across the Ada specification window

3) York got an SERC or other funding contract to implement a multi pass Ada compiler on BSD Unix.

Which would mean (if true) Dijkstra's comments basically slated all of the candidate languages, and by implication Wirths language views, given he'd worked on the IFIP programming language specification process and was so strongly associated with pascal variants of imperative programming languages.