Basic Examples (2) 

Drop elements from the back that are odd:

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Use a pure function to drop elements from the back while they are larger than 100:

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Scope (2) 

Elements of the list can be any expression:

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Create an operator of DropTrailingWhile that drops trailing even numbers:

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Use the operator:

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Generalizations & Extensions (2) 

Use on an expression with head f:

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DropTrailingWhile also works on SparseArray:

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Applications (1) 

Drop trailing zeros:

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Properties and Relations (2) 

DropTrailingWhile is equivalent to a combination of Drop, Reverse and LengthWhile:

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DropTrailingWhile gives an empty list if crit[e_i] is True for all elements:

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Possible Issues (1) 

The list terminates for any value of crit[e_i] that is not True:

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