I've been a professional C, Perl, PHP and Python developer.
I'm an ex-sysadmin from the late 20th century.
These days I do more Javascript and CSS and whatnot, and promote UX and accessibility.
But I imagine that the whole primitive values are immutable thing was established much, much earlier—leading to a situation where creating a "constant binding" was easy and relatively cheap in terms of run-time performance.
Facilities for creating immutable objects exist (Object.freeze() which is only shallow) but come with run-time overhead.
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Wasn't
constadded waaaay later though, like in ~2010 or something?ES2015 (ES6) actually.
But I imagine that the whole primitive values are immutable thing was established much, much earlier—leading to a situation where creating a "constant binding" was easy and relatively cheap in terms of run-time performance.
Facilities for creating immutable objects exist (
Object.freeze()which is only shallow) but come with run-time overhead.