computer language: mixed list & hashtable

these days, some lang has array/list and hashtable mixed into one. It is popularized by php.

php started that way probably due to a hack. The lang doesn't have arrays, but what it calls array is a mix of hashtable. When used like array, the keys are automatically filled with 0, 1, 2, etc. 〔➤ PHP: Array Basics

JavaScript is a different story, but also hack and incompetence. It did NOT intent to have mixed array/hashtable, but rather, in order to be simple, it's array is implemented as hashtable (which is its object), so it pretent to be array. 〔➤ JavaScript: Understanding JavaScript Array〕.

nobody liked these, because they are even less than a design decision. The JavaScript here is simply fk'd up.

though, i heard lua is also mixed array/hashtable. Anyone know if it's really good?

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