clear removes all key-values from a hash.
clear removes (
rm) the key-value pairs on
the hash. For large hashes it might be faster to reinitialize the
hash, though this might cause memory leaks.
None. Method clear exists entirely for its side effects.
clear should be called prior to removing a hash. This ensures
that the memory from the environment is freed.
del to remove specific key-values
from the hash.
h <- hash( letters, 1:26 ) h # An object of type 'hash' containing 26 key-value pairs. clear(h) h # An object of type 'hash' containing 0 key-value pairs.
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