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=={{header|Lua}}==
Lua tables are implemented with hash keys, so this task is a bit anti-idiomatic for Lua. That is, if you knew in advance that this would be the primary operation on the data, then you'd likely (re-)structure the data to directly support it. But, to comply with the intent of the task, the data here is initially structured as an indexed (rather than hash-keyed) array, <i>then</i> hashed dynamically. (it's analogous to the Python solution, where a list is immediately converted to a dictionary - but could have <i>began</i> as a dictionary)
<lang lua>local function recA(age, name) return { Age=age, Name=name } end
local tabA = { recA(27,"Jonah"), recA(18,"Alan"), recA(28,"Glory"), recA(18,"Popeye"), recA(28,"Alan") }
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