CODEWITHSUNDEEP
lua
aoiee
aoiee

Reputation: 355

Lua - unpack then pack an array

If I unpack then pack an array:

arr = {1, 2, 3, 4, 5}
arr = table.pack(table.unpack(arr))

Will I guarantee that the resulting arr is the same as the initial arr?

In the documentation it states:

Note that the resulting table may not be a sequence.

What does this mean?

Upvotes: 1

Views: 6366

Answers (1)

lhf
lhf

Reputation: 72312

The documentation you cite is talking about nils as in table.pack(1,nil,3).

Your table is a sequence and so table.unpack(arr) outputs no nils and table.pack(table.unpack(arr)) is a sequence.

However, table.pack(table.unpack(arr)) differs from the original arr because it contains a field n with value 5. This is the only difference.

Upvotes: 4

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