1Stack(3)                         OCaml library                        Stack(3)
2
3
4

NAME

6       Stack - Last-in first-out stacks.
7

Module

9       Module   Stack
10

Documentation

12       Module Stack
13        : sig end
14
15
16       Last-in first-out stacks.
17
18       This module implements stacks (LIFOs), with in-place modification.
19
20
21
22
23
24       type 'a t
25
26
27       The type of stacks containing elements of type 'a .
28
29
30
31       exception Empty
32
33
34       Raised when Stack.pop or Stack.top is applied to an empty stack.
35
36
37
38       val create : unit -> 'a t
39
40       Return a new stack, initially empty.
41
42
43
44       val push : 'a -> 'a t -> unit
45
46
47       push x s adds the element x at the top of stack s .
48
49
50
51       val pop : 'a t -> 'a
52
53
54       pop  s  removes  and returns the topmost element in stack s , or raises
55       Stack.Empty if the stack is empty.
56
57
58
59       val pop_opt : 'a t -> 'a option
60
61
62       pop_opt s removes and returns the topmost  element  in  stack  s  ,  or
63       returns None if the stack is empty.
64
65
66       Since 4.08
67
68
69
70       val top : 'a t -> 'a
71
72
73       top s returns the topmost element in stack s , or raises Stack.Empty if
74       the stack is empty.
75
76
77
78       val top_opt : 'a t -> 'a option
79
80
81       top_opt s returns the topmost element in stack s , or None if the stack
82       is empty.
83
84
85       Since 4.08
86
87
88
89       val clear : 'a t -> unit
90
91       Discard all elements from a stack.
92
93
94
95       val copy : 'a t -> 'a t
96
97       Return a copy of the given stack.
98
99
100
101       val is_empty : 'a t -> bool
102
103       Return true if the given stack is empty, false otherwise.
104
105
106
107       val length : 'a t -> int
108
109       Return the number of elements in a stack. Time complexity O(1)
110
111
112
113       val iter : ('a -> unit) -> 'a t -> unit
114
115
116       iter  f  s applies f in turn to all elements of s , from the element at
117       the top of the stack to the element at the bottom  of  the  stack.  The
118       stack itself is unchanged.
119
120
121
122       val fold : ('b -> 'a -> 'b) -> 'b -> 'a t -> 'b
123
124
125       fold  f  accu  s is (f (... (f (f accu x1) x2) ...) xn) where x1 is the
126       top of the stack, x2 the second element, and xn the bottom element. The
127       stack is unchanged.
128
129
130       Since 4.03
131
132
133
134
135   Iterators
136       val to_seq : 'a t -> 'a Seq.t
137
138       Iterate  on  the  stack, top to bottom.  It is safe to modify the stack
139       during iteration.
140
141
142       Since 4.07
143
144
145
146       val add_seq : 'a t -> 'a Seq.t -> unit
147
148       Add the elements from the iterator on the top of the stack.
149
150
151       Since 4.07
152
153
154
155       val of_seq : 'a Seq.t -> 'a t
156
157       Create a stack from the iterator
158
159
160       Since 4.07
161
162
163
164
165
166OCamldoc                          2020-09-01                          Stack(3)
Impressum