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addHook(HashTable,Thing,Function) -- add a hook function to an object for later processing

Synopsis

Code

-- ../m2/methods.m2:481
addHook   (HashTable,Thing,Function) := (obj,key,hook) -> (c := obj.cache; c#key = if c#?key then prepend(hook,c#key) else {hook})
-- ../m2/methods.m2:477
addHook   (MutableHashTable,Thing,Function) := (obj,key,hook) -> obj#key = if obj#?key then prepend(hook,obj#key) else {hook}

See also