this post was submitted on 24 Feb 2026
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No biggie, I just named an example. Even "real" programmers, whatever definition you want to use for that, don't know all languages.
But yes, many languages do use // as comments and particularly the Javascript environment it originally stems from does. Python (
#) and SQL (--) are the only examples I interact with frequently enough to know off the top of my head (but SQL still recognises/* ... */for delimited comments). XML/HTML also has<!-- -->for comments, but that's not so much a programming and more of a description language.