Policeman examines a list (9)

I believe the answer is:

constable

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'policeman' is the definition.
(I know that constable is a type of policeman)

'examines a list' is the wordplay.
'examines' becomes 'cons' (I can't explain this - if you can you should give a lot more credence to this answer).
'a list' becomes 'table' (I've seen this in other clues).
'cons'+'table'='CONSTABLE'

Can you help me to learn more?

(Other definitions for constable that I've seen before include "Policeman - landscape artist" , "He painted" , "Copper - artist" , "Force member" , "Flatford Mill painter" .)

I've seen this clue in The Globe and Mail.

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