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| author | Björn-Egil Dahlberg <[email protected]> | 2016-04-10 23:09:54 +0200 |
|---|---|---|
| committer | Björn-Egil Dahlberg <[email protected]> | 2016-04-27 15:26:54 +0200 |
| commit | f3c55529dbc9cb3bf8801bea9b64da78b9b73d5a (patch) | |
| tree | cc278d922716aebea54d43baddc2630c487aa32e /lib/stdlib/doc/src/maps.xml | |
| parent | 65bd8ade865eebe0d8a3c3210a4e2e9f334e229f (diff) | |
| download | otp-f3c55529dbc9cb3bf8801bea9b64da78b9b73d5a.tar.gz otp-f3c55529dbc9cb3bf8801bea9b64da78b9b73d5a.tar.bz2 otp-f3c55529dbc9cb3bf8801bea9b64da78b9b73d5a.zip | |
stdlib: Document maps:take/2
Diffstat (limited to 'lib/stdlib/doc/src/maps.xml')
| -rw-r--r-- | lib/stdlib/doc/src/maps.xml | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/lib/stdlib/doc/src/maps.xml b/lib/stdlib/doc/src/maps.xml index 0f58f19421..97a7438890 100644 --- a/lib/stdlib/doc/src/maps.xml +++ b/lib/stdlib/doc/src/maps.xml @@ -301,6 +301,30 @@ false</code> </func> <func> + <name name="take" arity="2"/> + <fsummary></fsummary> + <desc> + <p> + The function removes the <c><anno>Key</anno></c>, if it exists, and its associated value from + <c><anno>Map1</anno></c> and returns a tuple with the removed <c><anno>Value</anno></c> and + the new map <c><anno>Map2</anno></c> without key <c><anno>Key</anno></c>. + If the key does not exist <c>error</c> is returned. + </p> + <p> + The call will fail with a <c>{badmap,Map}</c> exception if <c><anno>Map1</anno></c> is not a map. + </p> + <p>Example:</p> + <code type="none"> +> Map = #{"a" => "hello", "b" => "world"}. +#{"a" => "hello", "b" => "world"} +> maps:take("a",Map). +{"hello",#{"b" => "world"}} +> maps:take("does not exist",Map). +error</code> + </desc> + </func> + + <func> <name name="size" arity="1"/> <fsummary></fsummary> <desc> |