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| author | Björn Gustavsson <[email protected]> | 2019-02-13 08:29:51 +0100 |
|---|---|---|
| committer | Björn Gustavsson <[email protected]> | 2019-02-14 06:52:26 +0100 |
| commit | 0ab6149067a82d89e584f862604c1c63578fd5fa (patch) | |
| tree | 32c887276074c1aa758fe655fab8219427e1e81a /erts/doc | |
| parent | 485713afa0d2481e93882bc386aebb06a49c04bc (diff) | |
| download | otp-0ab6149067a82d89e584f862604c1c63578fd5fa.tar.gz otp-0ab6149067a82d89e584f862604c1c63578fd5fa.tar.bz2 otp-0ab6149067a82d89e584f862604c1c63578fd5fa.zip | |
Add persistent_term:get(Key, DefaultValue)
https://bugs.erlang.org/browse/ERL-843
Diffstat (limited to 'erts/doc')
| -rw-r--r-- | erts/doc/src/persistent_term.xml | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/erts/doc/src/persistent_term.xml b/erts/doc/src/persistent_term.xml index 1eda7f8d76..9d3c9afd80 100644 --- a/erts/doc/src/persistent_term.xml +++ b/erts/doc/src/persistent_term.xml @@ -256,6 +256,22 @@ will be slower as the number of persistent terms increases.</pre> </func> <func> + <name name="get" arity="2" since="OTP 21.3"/> + <fsummary>Get the value for a persistent term.</fsummary> + <desc> + <p>Retrieve the value for the persistent term associated with + the key <c><anno>Key</anno></c>. The lookup will be made in + constant time and the value will not be copied to the heap + of the calling process.</p> + <p>This function returns <c><anno>Default</anno></c> if no + term has been stored with the key <c><anno>Key</anno></c>.</p> + <p>If the calling process holds on to the value of the + persistent term and the persistent term is deleted in the future, + the term will be copied to the process.</p> + </desc> + </func> + + <func> <name name="info" arity="0" since="OTP 21.2"/> <fsummary>Get information about persistent terms.</fsummary> <desc> |