ABAP: Converting internal tables to range tables

With the FOR operator you can easily convert an itab to a range table without using an explicit LOOP.

lt_rng_tab = VALUE #( FOR wa IN lt_tab ( sign = |I| option = |EQ| low = wa-field ) ).
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There is also the other way around using the MAPPING Operator.

lt_tab = CORRESPONDING #( lt_rng_tab MAPPING low = field ).
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