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Constants in dynamic languages

2 points by avrmav ↗ HN
Javascript's constants are not const Ruby's constants are not const Python needs no "setter function" to achieve something close to constants. Lua needs tables + metatables to achieve it Only PHP seems to get it right Wondering if there is a reason that dynamic languages are struggling on having a mechanism for "real" constants.

Anyone knows if there are deeper reasons or it is just how these languages were designed?

1 comment

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davelnewton
Define "real" constants (and define how the ones you list are not constant). Without understanding your definition(s) it's harder to have a meaningful reply.