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Diffstat (limited to 'lib/stdlib/doc/src/dict.xml')
| -rw-r--r-- | lib/stdlib/doc/src/dict.xml | 212 |
1 files changed, 65 insertions, 147 deletions
diff --git a/lib/stdlib/doc/src/dict.xml b/lib/stdlib/doc/src/dict.xml index 0cc76e0c78..b01acd02bf 100644 --- a/lib/stdlib/doc/src/dict.xml +++ b/lib/stdlib/doc/src/dict.xml @@ -39,174 +39,120 @@ they do not compare equal (<c>==</c>).</p> </description> - <section> - <title>DATA TYPES</title> - <code type="none"> -dictionary() - as returned by new/0</code> - </section> + <datatypes> + <datatype> + <name><marker id="type-dict">dict()</marker></name> + <desc><p>Dictionary as returned by <c>new/0</c>.</p></desc> + </datatype> + </datatypes> <funcs> <func> - <name>append(Key, Value, Dict1) -> Dict2</name> + <name name="append" arity="3"/> <fsummary>Append a value to keys in a dictionary</fsummary> - <type> - <v>Key = Value = term()</v> - <v>Dict1 = Dict2 = dictionary()</v> - </type> <desc> - <p>This function appends a new <c>Value</c> to the current list - of values associated with <c>Key</c>.</p> - </desc> + <p>This function appends a new <c><anno>Value</anno></c> to the current list + of values associated with <c><anno>Key</anno></c>.</p> + </desc> </func> <func> - <name>append_list(Key, ValList, Dict1) -> Dict2</name> + <name name="append_list" arity="3"/> <fsummary>Append new values to keys in a dictionary</fsummary> - <type> - <v>ValList = [Value]</v> - <v>Key = Value = term()</v> - <v>Dict1 = Dict2 = dictionary()</v> - </type> <desc> - <p>This function appends a list of values <c>ValList</c> to - the current list of values associated with <c>Key</c>. An + <p>This function appends a list of values <c><anno>ValList</anno></c> to + the current list of values associated with <c><anno>Key</anno></c>. An exception is generated if the initial value associated with - <c>Key</c> is not a list of values.</p> + <c><anno>Key</anno></c> is not a list of values.</p> </desc> </func> <func> - <name>erase(Key, Dict1) -> Dict2</name> + <name name="erase" arity="2"/> <fsummary>Erase a key from a dictionary</fsummary> - <type> - <v>Key = term()</v> - <v>Dict1 = Dict2 = dictionary()</v> - </type> <desc> <p>This function erases all items with a given key from a dictionary.</p> </desc> </func> <func> - <name>fetch(Key, Dict) -> Value</name> + <name name="fetch" arity="2"/> <fsummary>Look-up values in a dictionary</fsummary> - <type> - <v>Key = Value = term()</v> - <v>Dict = dictionary()</v> - </type> <desc> - <p>This function returns the value associated with <c>Key</c> - in the dictionary <c>Dict</c>. <c>fetch</c> assumes that - the <c>Key</c> is present in the dictionary and an exception - is generated if <c>Key</c> is not in the dictionary.</p> + <p>This function returns the value associated with <c><anno>Key</anno></c> + in the dictionary <c><anno>Dict</anno></c>. <c>fetch</c> assumes that + the <c><anno>Key</anno></c> is present in the dictionary and an exception + is generated if <c><anno>Key</anno></c> is not in the dictionary.</p> </desc> </func> <func> - <name>fetch_keys(Dict) -> Keys</name> + <name name="fetch_keys" arity="1"/> <fsummary>Return all keys in a dictionary</fsummary> - <type> - <v>Dict = dictionary()</v> - <v>Keys = [term()]</v> - </type> <desc> <p>This function returns a list of all keys in the dictionary.</p> </desc> </func> <func> - <name>filter(Pred, Dict1) -> Dict2</name> + <name name="filter" arity="2"/> <fsummary>Choose elements which satisfy a predicate</fsummary> - <type> - <v>Pred = fun(Key, Value) -> bool()</v> - <v> Key = Value = term()</v> - <v>Dict1 = Dict2 = dictionary()</v> - </type> <desc> - <p><c>Dict2</c> is a dictionary of all keys and values in - <c>Dict1</c> for which <c>Pred(Key, Value)</c> is <c>true</c>.</p> + <p><c><anno>Dict2</anno></c> is a dictionary of all keys and values in + <c><anno>Dict1</anno></c> for which <c><anno>Pred</anno>(<anno>Key</anno>, <anno>Value</anno>)</c> is <c>true</c>.</p> </desc> </func> <func> - <name>find(Key, Dict) -> {ok, Value} | error</name> + <name name="find" arity="2"/> <fsummary>Search for a key in a dictionary</fsummary> - <type> - <v>Key = Value = term()</v> - <v>Dict = dictionary()</v> - </type> <desc> <p>This function searches for a key in a dictionary. Returns - <c>{ok, Value}</c> where <c>Value</c> is the value associated - with <c>Key</c>, or <c>error</c> if the key is not present in + <c>{ok, <anno>Value</anno>}</c> where <c><anno>Value</anno></c> is the value associated + with <c><anno>Key</anno></c>, or <c>error</c> if the key is not present in the dictionary.</p> </desc> </func> <func> - <name>fold(Fun, Acc0, Dict) -> Acc1</name> + <name name="fold" arity="3"/> <fsummary>Fold a function over a dictionary</fsummary> - <type> - <v>Fun = fun(Key, Value, AccIn) -> AccOut</v> - <v>Key = Value = term()</v> - <v>Acc0 = Acc1 = AccIn = AccOut = term()</v> - <v>Dict = dictionary()</v> - </type> <desc> - <p>Calls <c>Fun</c> on successive keys and values of - <c>Dict</c> together with an extra argument <c>Acc</c> - (short for accumulator). <c>Fun</c> must return a new - accumulator which is passed to the next call. <c>Acc0</c> is + <p>Calls <c><anno>Fun</anno></c> on successive keys and values of + <c><anno>Dict</anno></c> together with an extra argument <c>Acc</c> + (short for accumulator). <c><anno>Fun</anno></c> must return a new + accumulator which is passed to the next call. <c><anno>Acc0</anno></c> is returned if the list is empty. The evaluation order is undefined.</p> </desc> </func> <func> - <name>from_list(List) -> Dict</name> + <name name="from_list" arity="1"/> <fsummary>Convert a list of pairs to a dictionary</fsummary> - <type> - <v>List = [{Key, Value}]</v> - <v>Dict = dictionary()</v> - </type> <desc> - <p>This function converts the <c>Key</c> - <c>Value</c> list - <c>List</c> to a dictionary.</p> + <p>This function converts the <c><anno>Key</anno></c> - <c><anno>Value</anno></c> list + <c><anno>List</anno></c> to a dictionary.</p> </desc> </func> <func> - <name>is_key(Key, Dict) -> bool()</name> + <name name="is_key" arity="2"/> <fsummary>Test if a key is in a dictionary</fsummary> - <type> - <v>Key = term()</v> - <v>Dict = dictionary()</v> - </type> <desc> - <p>This function tests if <c>Key</c> is contained in - the dictionary <c>Dict</c>.</p> + <p>This function tests if <c><anno>Key</anno></c> is contained in + the dictionary <c><anno>Dict</anno></c>.</p> </desc> </func> <func> - <name>map(Fun, Dict1) -> Dict2</name> + <name name="map" arity="2"/> <fsummary>Map a function over a dictionary</fsummary> - <type> - <v>Fun = fun(Key, Value1) -> Value2</v> - <v> Key = Value1 = Value2 = term()</v> - <v>Dict1 = Dict2 = dictionary()</v> - </type> <desc> - <p><c>map</c> calls <c>Func</c> on successive keys and values - of <c>Dict</c> to return a new value for each key. + <p><c>map</c> calls <c><anno>Fun</anno></c> on successive keys and values + of <c><anno>Dict1</anno></c> to return a new value for each key. The evaluation order is undefined.</p> </desc> </func> <func> - <name>merge(Fun, Dict1, Dict2) -> Dict3</name> + <name name="merge" arity="3"/> <fsummary>Merge two dictionaries</fsummary> - <type> - <v>Fun = fun(Key, Value1, Value2) -> Value</v> - <v> Key = Value1 = Value2 = Value3 = term()</v> - <v>Dict1 = Dict2 = Dict3 = dictionary()</v> - </type> <desc> - <p><c>merge</c> merges two dictionaries, <c>Dict1</c> and - <c>Dict2</c>, to create a new dictionary. All the <c>Key</c> - - <c>Value</c> pairs from both dictionaries are included in + <p><c>merge</c> merges two dictionaries, <c><anno>Dict1</anno></c> and + <c><anno>Dict2</anno></c>, to create a new dictionary. All the <c><anno>Key</anno></c> + - <c><anno>Value</anno></c> pairs from both dictionaries are included in the new dictionary. If a key occurs in both dictionaries then - <c>Fun</c> is called with the key and both values to return a + <c><anno>Fun</anno></c> is called with the key and both values to return a new value. <c>merge</c> could be defined as:</p> <code type="none"> merge(Fun, D1, D2) -> @@ -217,75 +163,52 @@ merge(Fun, D1, D2) -> </desc> </func> <func> - <name>new() -> dictionary()</name> + <name name="new" arity="0"/> <fsummary>Create a dictionary</fsummary> <desc> <p>This function creates a new dictionary.</p> </desc> </func> <func> - <name>size(Dict) -> int()</name> + <name name="size" arity="1"/> <fsummary>Return the number of elements in a dictionary</fsummary> - <type> - <v>Dict = dictionary()</v> - </type> <desc> - <p>Returns the number of elements in a <c>Dict</c>.</p> + <p>Returns the number of elements in a <c><anno>Dict</anno></c>.</p> </desc> </func> <func> - <name>store(Key, Value, Dict1) -> Dict2</name> + <name name="store" arity="3"/> <fsummary>Store a value in a dictionary</fsummary> - <type> - <v>Key = Value = term()</v> - <v>Dict1 = Dict2 = dictionary()</v> - </type> <desc> - <p>This function stores a <c>Key</c> - <c>Value</c> pair in a - dictionary. If the <c>Key</c> already exists in <c>Dict1</c>, - the associated value is replaced by <c>Value</c>.</p> + <p>This function stores a <c><anno>Key</anno></c> - <c><anno>Value</anno></c> pair in a + dictionary. If the <c><anno>Key</anno></c> already exists in <c><anno>Dict1</anno></c>, + the associated value is replaced by <c><anno>Value</anno></c>.</p> </desc> </func> <func> - <name>to_list(Dict) -> List</name> + <name name="to_list" arity="1"/> <fsummary>Convert a dictionary to a list of pairs</fsummary> - <type> - <v>Dict = dictionary()</v> - <v>List = [{Key, Value}]</v> - </type> <desc> <p>This function converts the dictionary to a list representation.</p> </desc> </func> <func> - <name>update(Key, Fun, Dict1) -> Dict2</name> + <name name="update" arity="3"/> <fsummary>Update a value in a dictionary</fsummary> - <type> - <v>Key = term()</v> - <v>Fun = fun(Value1) -> Value2</v> - <v> Value1 = Value2 = term()</v> - <v>Dict1 = Dict2 = dictionary()</v> - </type> <desc> - <p>Update a value in a dictionary by calling <c>Fun</c> on + <p>Update a value in a dictionary by calling <c><anno>Fun</anno></c> on the value to get a new value. An exception is generated if - <c>Key</c> is not present in the dictionary.</p> + <c><anno>Key</anno></c> is not present in the dictionary.</p> </desc> </func> <func> - <name>update(Key, Fun, Initial, Dict1) -> Dict2</name> + <name name="update" arity="4"/> <fsummary>Update a value in a dictionary</fsummary> - <type> - <v>Key = Initial = term()</v> - <v>Fun = fun(Value1) -> Value2</v> - <v> Value1 = Value2 = term()</v> - <v>Dict1 = Dict2 = dictionary()</v> - </type> <desc> - <p>Update a value in a dictionary by calling <c>Fun</c> on - the value to get a new value. If <c>Key</c> is not present - in the dictionary then <c>Initial</c> will be stored as + <p>Update a value in a dictionary by calling <c><anno>Fun</anno></c> on + the value to get a new value. If <c><anno>Key</anno></c> is not present + in the dictionary then <c><anno>Initial</anno></c> will be stored as the first value. For example <c>append/3</c> could be defined as:</p> <code type="none"> @@ -294,17 +217,12 @@ append(Key, Val, D) -> </desc> </func> <func> - <name>update_counter(Key, Increment, Dict1) -> Dict2</name> + <name name="update_counter" arity="3"/> <fsummary>Increment a value in a dictionary</fsummary> - <type> - <v>Key = term()</v> - <v>Increment = number()</v> - <v>Dict1 = Dict2 = dictionary()</v> - </type> <desc> - <p>Add <c>Increment</c> to the value associated with <c>Key</c> - and store this value. If <c>Key</c> is not present in - the dictionary then <c>Increment</c> will be stored as + <p>Add <c><anno>Increment</anno></c> to the value associated with <c><anno>Key</anno></c> + and store this value. If <c><anno>Key</anno></c> is not present in + the dictionary then <c><anno>Increment</anno></c> will be stored as the first value.</p> <p>This could be defined as:</p> <code type="none"> |