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(Built-in-Functions) What is the difference on "pairs", "ipairs" and "next" and where to use them?
What is the difference on "pairs", "ipairs" and "next"? The ROBLOX Wiki is not precise on this subject, someone could explain me the difference and where to use them?
for index, value in pairs(game.Players:GetChildren()) do
print(index, value)
end
for index, value in ipairs(game.Players:GetChildren()) do
print(index, value)
end
for index, value in next, game.Players:GetChildren() do
print(index, value)
end
1
pairs could be compared to next, as pairs returns next User#19524 175 — 5y
1
In a sense they're kind of the same thing User#19524 175 — 5y
2
ipairs stops at nil piRadians 297 — 5y
1 answer
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pairs vs next
pairs returns next, t, nil. t being the table passed to pairs, nil being the first key to next. They are kinda the same thing, so I won't go into detail about this.
pairs vs ipairs
They're similar, but ipairs is a bit different. When a nil value is reached, it stops, as pellm said in the comments. Take this for example:
local array = {"hello", "how", nil, "you"}
for _, v in ipairs(array) do
print(v)
end
Should print:
hello
how
Because nil was reached, it didn't print nil, and "you" wasn't even reached.