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concatenate

Merges two lists.

concatenate(xs:list, ys:list) -> list

The concatenate function returns a list containing all elements from the lists xs and ys in order. The expression concatenate(xs, ys) is equivalent to [...xs, ...ys].

from {xs: [1, 2], ys: [3, 4]}
zs = concatenate(xs, ys)
{
xs: [1, 2],
ys: [3, 4],
zs: [1, 2, 3, 4]
}

append, prepend