View Source Mail.Proplist (mail v0.4.0)

A hybrid of Erlang's proplists and lists keystores.

It acts as a Set for key-value pairs, but still maintains it's order like a List.

Summary

Types

t()

Functions

delete(list, key)

Removes a key-value pair by the given key and returns the remaining list

drop(list, keys)

Drops the specified keys from the list, returning the remaining.

filter(list, func)

Filters the proplist, i.e. returns only those elements for which fun returns a truthy value.

get(list, key)

Retrieves a value from the list

has_key?(list, key)

Detects if the list contains the specified key.

keys(list)

Retrieves all keys from the key value pairs present in the list, unlike :proplists.get_keys which will return non-kv pairs as keys

merge(a, b)

Concatenates the given lists.

normalize(list)

Merges duplicate pairs with the latest value.

prepend(list, key, value)

Prepends the key-value pair to the list if it doesn't already exist, otherwise it will replace the existing pair

put(list, key, value)

Stores a key-value pair in the list, will replace an existing pair with the same key.

take(list, keys)

Takes the specified keys from the list, returning the remaining.

Types

t()

@type t() :: [{term(), term()} | term()]

Functions

delete(list, key)

@spec delete(list :: t(), key :: term()) :: t()

Removes a key-value pair by the given key and returns the remaining list

Args:

list - the list to remove the pair from
key - the key to remove

drop(list, keys)

@spec drop(list :: t(), keys :: list()) :: t()

Drops the specified keys from the list, returning the remaining.

Args:

list - the list
keys - the keys to remove

filter(list, func)

@spec filter(list :: t(), func :: any()) :: t()

Filters the proplist, i.e. returns only those elements for which fun returns a truthy value.

Args:

list - the list to filter
func - the function to execute

get(list, key)

Retrieves a value from the list

Args:

list - the list to look in
key - the key of the pair to retrieve it's value

has_key?(list, key)

@spec has_key?(list :: t(), key :: term()) :: [term()] | false

Detects if the list contains the specified key.

Args:

list - the list to look in
key - the key to look for

keys(list)

@spec keys(list :: t()) :: [term()]

Retrieves all keys from the key value pairs present in the list, unlike :proplists.get_keys which will return non-kv pairs as keys

Args:

list - a list to retrieve all the keys from

merge(a, b)

@spec merge(a :: t(), b :: t()) :: t()

Concatenates the given lists.

Args:

a - base list to merge unto
b - list to merge with

normalize(list)

@spec normalize(list :: t()) :: t()

Merges duplicate pairs with the latest value.

Args:

list - the list to normalize

prepend(list, key, value)

@spec prepend(list :: t(), key :: term(), value :: term()) :: t()

Prepends the key-value pair to the list if it doesn't already exist, otherwise it will replace the existing pair

Args:

list - the list to store in
key - the key of the pair
value - the value of the pair

put(list, key, value)

@spec put(list :: t(), key :: term(), value :: term()) :: t()

Stores a key-value pair in the list, will replace an existing pair with the same key.

Args:

list - the list to store in
key - the key of the pair
value - the value of the pair

take(list, keys)

@spec take(list :: t(), keys :: list()) :: t()

Takes the specified keys from the list, returning the remaining.

Args:

list - the list
keys - the keys to keep