groovy Collection Operators Apply transformation to nested collections

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Example

Apply the transformation to non-collection entries, delving into nested collections too and preserving the whole structure.

def lst = ['foo', 'bar', ['inner_foo', 'inner_bar']]

lst.collectNested { it.toUpperCase() } // [FOO, BAR, [INNER_FOO, INNER_BAR]]


Got any groovy Question?