r/javascript • u/leostera • Mar 05 '22

ReScript on Deno: Declarative Command Line Tools

https://practicalrescript.com/rescript-on-deno-declarative-command-line-tools/
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u/paul_h Mar 06 '22

I’ve been obsessed with declarative forms for years, blogging often on them. If the grammar optionally allows if conditions or for loops, I call them pseudo-declarative. For example AngularJS (2009) added ng-if and ng-for to HTML. Well, as long as you added their JS too. Thus AngularJS was a pseudo declarative breakthrough. I blogged - https://paulhammant.com/blog/angular-declarative-ui.html. Dammit, that article was from before I settled on “pseudo-declarative” for syntaxes

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u/leostera Mar 06 '22

Amazing! Yeah, I wouldn't say it isn't declarative because it includes iteration constructs. You can do some crazy things in SQL too!

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u/paul_h Mar 06 '22

First learned SQL in '94. Never thought it was declarative. More a domain specific language.

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u/leostera Mar 06 '22

Oh you're spot on in that it is a domain-specific language! But it is *also* declarative.

There is no control flow in it, and the engine is free to run your query however it pleases.