icalendar

A library to parse and print the iCalendar (RFC 5545) format
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Library icalendar
Module Icalendar . Params
include Gmap.S with type 'a key = 'a icalparameter
type 'a key = 'a icalparameter

The type for map keys whose lookup value is 'a.

type t

The type of maps from type 'a key to 'a.

Constructors

val empty : t

empty is the empty map.

val singleton : 'a key -> 'a -> t

singleton key value creates a one-element map that contains a binding value for key.

Basic operations

val is_empty : t -> bool

is_empty m returns true if the map m is empty, false otherwise.

val cardinal : t -> int

cardinal m returns the number of bindings of the map m.

Lookup operations

val mem : 'a key -> t -> bool

mem key m returns true if the map m contains a binding for key.

val find : 'a key -> t -> 'a option

find key m returns Some v if the binding of key in m is v, or None if key is not bound m.

val get : 'a key -> t -> 'a

find key m returns v if the binding of key in m is v.

  • raises Not_found

    if m does not contain a binding for key.

Insertion and removal operations

val add_unless_bound : 'a key -> 'a -> t -> t option

add_unless_bound key value m returns Some m', a map containing the same bindings as m, plus a binding of key to value. Or, None if key was already bound in m.

val add : 'a key -> 'a -> t -> t

add key value m returns a map containing the same bindings as m, plus a binding of key to value. If key was already bound in m, the previous binding disappears.

val remove : 'a key -> t -> t

remove key m returns a map containing the same bindings as m, except for key which is not bound in the returned map. If key was not bound in m, m is returned unchanged.

val update : 'a key -> ( 'a option -> 'a option ) -> t -> t

update k f m returns a map containing the same bindings as m, except for the binding v of k. Depending the value of v, which is f (find k m), the binding of k is added, removed, or updated.

Bindings

type b =
| B : 'a key * 'a -> b(*

The type for a binding: a pair containing a key and its value.

*)

Selection of bindings

val min_binding : t -> b option

min_binding m is the minimal binding in m, None if m is empty.

val max_binding : t -> b option

max_binding m is the maximal binding in m, None if m is empty.

val any_binding : t -> b option

any_binding m is any binding in m, None if m is empty.

val bindings : t -> b list

bindings m returns the list of all bindings in the given map m. The list is sorted with respect to the ordering over the type of the keys.

Higher-order functions

type eq = {
f : 'a. 'a key -> 'a -> 'a -> bool;
}

The function type for the equal operation, using a record type for "first-class" semi-explicit polymorphism.

val equal : eq -> t -> t -> bool

equal p m m' tests whether the maps m and m' are equal, that is contain equal keys and associate them with equal data. p is the equality predicate used to compare the data associated with the keys.

type mapper = {
f : 'a. 'a key -> 'a -> 'a;
}

The function type for the map operation, using a record type for "first-class" semi-explicit polymorphism.

val map : mapper -> t -> t

map f m returns a map with the same domain as m, where the associated binding b has been replaced by the result of the application of f to b. The bindings are passed to f in increasing order with respect to the ordering over the type of the keys.

val iter : ( b -> unit ) -> t -> unit

iter f m applies f to all bindings in m. The bindings are passed in increasing order with respect to the ordering over the type of keys.

val fold : ( b -> 'a -> 'a ) -> t -> 'a -> 'a

fold f m acc computes (f bN .. (f b1 acc)), where b1 .. bN are the bindings of m in increasing order with respect to the ordering over the type of the keys.

val for_all : ( b -> bool ) -> t -> bool

for_all p m checks if all bindings of the map m satisfy the predicate p.

val exists : ( b -> bool ) -> t -> bool

exists p m checks if at least one binding of the map m satisfies p.

val filter : ( b -> bool ) -> t -> t

filter p m returns the map with all the bindings in m that satisfy p.

type merger = {
f : 'a. 'a key -> 'a option -> 'a option -> 'a option;
}

The function type for the merge operation, using a record type for "first-class" semi-explicit polymorphism.

val merge : merger -> t -> t -> t

merge f m m' computes a map whose keys is a subset of keys of m and m'. The presence of each such binding, and the corresponding value, is determined with the function f.

type unionee = {
f : 'a. 'a key -> 'a -> 'a -> 'a option;
}

The function type for the union operation, using a record type for "first-class" semi-explicit polymorphism.

val union : unionee -> t -> t -> t

union f m m' computes a map whose keys is the union of the keys of m and m'. When the same binding is defined in both maps, the function f is used to combine them.