aboutsummaryrefslogtreecommitdiffstats
path: root/lib/stdlib/doc/src/dict.xml
diff options
context:
space:
mode:
authorMagnus Henoch <[email protected]>2013-09-04 14:08:34 +0100
committerMagnus Henoch <[email protected]>2013-09-13 10:44:23 +0100
commit0e4b0ae7ce57117a561f70fa51026d85b4702aaa (patch)
tree4a0aba55aaeef71d6f2abed3b8aec50cd0018c6a /lib/stdlib/doc/src/dict.xml
parent5b56a49d15d10ad4a35dbc8b2a4b01486f1d5294 (diff)
downloadotp-0e4b0ae7ce57117a561f70fa51026d85b4702aaa.tar.gz
otp-0e4b0ae7ce57117a561f70fa51026d85b4702aaa.tar.bz2
otp-0e4b0ae7ce57117a561f70fa51026d85b4702aaa.zip
Add dict:is_empty/1 and orddict:is_empty/1
dict:size/1 runs in constant time, but orddict:size/1 does not. With this change, the two modules stay API compatible and gain a constant-time function for checking whether a dictionary is empty.
Diffstat (limited to 'lib/stdlib/doc/src/dict.xml')
-rw-r--r--lib/stdlib/doc/src/dict.xml7
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/stdlib/doc/src/dict.xml b/lib/stdlib/doc/src/dict.xml
index b8cf61af80..6ff81b56ee 100644
--- a/lib/stdlib/doc/src/dict.xml
+++ b/lib/stdlib/doc/src/dict.xml
@@ -177,6 +177,13 @@ merge(Fun, D1, D2) ->
</desc>
</func>
<func>
+ <name name="is_empty" arity="1"/>
+ <fsummary>Return true if the dictionary is empty</fsummary>
+ <desc>
+ <p>Returns <c>true</c> if <c><anno>Dict</anno></c> has no elements, <c>false</c> otherwise.</p>
+ </desc>
+ </func>
+ <func>
<name name="store" arity="3"/>
<fsummary>Store a value in a dictionary</fsummary>
<desc>