flatten
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flatten
flatten collapses a nested array of arrays into a single flat array, recursively by default. Passing a depth argument, like flatten(1), limits how many levels of nesting are collapsed. This is commonly needed after operations like map that can produce arrays-of-arrays.
Note: flatten(1) flattens only one level deep, useful when you want to preserve some nested structure.
Example: flatten
nested = [1, [2, 3, [4, 5]], 6]
puts nested.flatten.inspect
puts nested.flatten(1).inspectLogin to try C/C++/Java/PHP code in the editor
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