prosody
6940d6db970b
util/iterators.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

util/iterators.lua @ 7939:6940d6db970b

mod_saslauth: Log SASL failure reason
author Kim Alvefur <zash@zash.se>
date Thu, 02 Mar 2017 15:17:32 +0100
parent 5468:2660407c3b73
child 5581:167c1da54606
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1522
569d58d21612 Add copyright header to those files missing one
Matthew Wild <mwild1@gmail.com>
parents: 919
diff changeset
1 -- Prosody IM
2923
b7049746bd29 Update copyright headers for 2010
Matthew Wild <mwild1@gmail.com>
parents: 1660
diff changeset
2 -- Copyright (C) 2008-2010 Matthew Wild
b7049746bd29 Update copyright headers for 2010
Matthew Wild <mwild1@gmail.com>
parents: 1660
diff changeset
3 -- Copyright (C) 2008-2010 Waqas Hussain
1522
569d58d21612 Add copyright header to those files missing one
Matthew Wild <mwild1@gmail.com>
parents: 919
diff changeset
4 --
569d58d21612 Add copyright header to those files missing one
Matthew Wild <mwild1@gmail.com>
parents: 919
diff changeset
5 -- This project is MIT/X11 licensed. Please see the
569d58d21612 Add copyright header to those files missing one
Matthew Wild <mwild1@gmail.com>
parents: 919
diff changeset
6 -- COPYING file in the source package for more information.
569d58d21612 Add copyright header to those files missing one
Matthew Wild <mwild1@gmail.com>
parents: 919
diff changeset
7 --
569d58d21612 Add copyright header to those files missing one
Matthew Wild <mwild1@gmail.com>
parents: 919
diff changeset
8
919
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
9 --[[ Iterators ]]--
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
10
4545
c9b91ddc9c11 util.iterators: Make a standard library (no longer injects into global namespace)
Matthew Wild <mwild1@gmail.com>
parents: 4441
diff changeset
11 local it = {};
c9b91ddc9c11 util.iterators: Make a standard library (no longer injects into global namespace)
Matthew Wild <mwild1@gmail.com>
parents: 4441
diff changeset
12
919
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
13 -- Reverse an iterator
4545
c9b91ddc9c11 util.iterators: Make a standard library (no longer injects into global namespace)
Matthew Wild <mwild1@gmail.com>
parents: 4441
diff changeset
14 function it.reverse(f, s, var)
919
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
15 local results = {};
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
16
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
17 -- First call the normal iterator
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
18 while true do
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
19 local ret = { f(s, var) };
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
20 var = ret[1];
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
21 if var == nil then break; end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
22 table.insert(results, 1, ret);
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
23 end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
24
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
25 -- Then return our reverse one
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
26 local i,max = 0, #results;
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
27 return function (results)
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
28 if i<max then
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
29 i = i + 1;
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
30 return unpack(results[i]);
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
31 end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
32 end, results;
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
33 end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
34
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
35 -- Iterate only over keys in a table
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
36 local function _keys_it(t, key)
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
37 return (next(t, key));
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
38 end
4545
c9b91ddc9c11 util.iterators: Make a standard library (no longer injects into global namespace)
Matthew Wild <mwild1@gmail.com>
parents: 4441
diff changeset
39 function it.keys(t)
919
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
40 return _keys_it, t;
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
41 end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
42
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
43 -- Iterate only over values in a table
4545
c9b91ddc9c11 util.iterators: Make a standard library (no longer injects into global namespace)
Matthew Wild <mwild1@gmail.com>
parents: 4441
diff changeset
44 function it.values(t)
919
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
45 local key, val;
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
46 return function (t)
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
47 key, val = next(t, key);
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
48 return val;
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
49 end, t;
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
50 end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
51
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
52 -- Given an iterator, iterate only over unique items
4545
c9b91ddc9c11 util.iterators: Make a standard library (no longer injects into global namespace)
Matthew Wild <mwild1@gmail.com>
parents: 4441
diff changeset
53 function it.unique(f, s, var)
919
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
54 local set = {};
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
55
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
56 return function ()
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
57 while true do
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
58 local ret = { f(s, var) };
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
59 var = ret[1];
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
60 if var == nil then break; end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
61 if not set[var] then
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
62 set[var] = true;
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
63 return var;
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
64 end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
65 end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
66 end;
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
67 end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
68
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
69 --[[ Return the number of items an iterator returns ]]--
4545
c9b91ddc9c11 util.iterators: Make a standard library (no longer injects into global namespace)
Matthew Wild <mwild1@gmail.com>
parents: 4441
diff changeset
70 function it.count(f, s, var)
919
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
71 local x = 0;
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
72
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
73 while true do
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
74 local ret = { f(s, var) };
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
75 var = ret[1];
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
76 if var == nil then break; end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
77 x = x + 1;
3540
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3392
diff changeset
78 end
919
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
79
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
80 return x;
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
81 end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
82
1659
6092fc9b078b util.iterators: Add head() iterator, to return the first n items
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
83 -- Return the first n items an iterator returns
4545
c9b91ddc9c11 util.iterators: Make a standard library (no longer injects into global namespace)
Matthew Wild <mwild1@gmail.com>
parents: 4441
diff changeset
84 function it.head(n, f, s, var)
1659
6092fc9b078b util.iterators: Add head() iterator, to return the first n items
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
85 local c = 0;
6092fc9b078b util.iterators: Add head() iterator, to return the first n items
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
86 return function (s, var)
6092fc9b078b util.iterators: Add head() iterator, to return the first n items
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
87 if c >= n then
6092fc9b078b util.iterators: Add head() iterator, to return the first n items
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
88 return nil;
6092fc9b078b util.iterators: Add head() iterator, to return the first n items
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
89 end
6092fc9b078b util.iterators: Add head() iterator, to return the first n items
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
90 c = c + 1;
6092fc9b078b util.iterators: Add head() iterator, to return the first n items
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
91 return f(s, var);
6092fc9b078b util.iterators: Add head() iterator, to return the first n items
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
92 end, s;
6092fc9b078b util.iterators: Add head() iterator, to return the first n items
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
93 end
6092fc9b078b util.iterators: Add head() iterator, to return the first n items
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
94
3392
6e31b49c4ab8 util.iterators: Add skip() to skip the first n items of an iterator
Matthew Wild <mwild1@gmail.com>
parents: 2923
diff changeset
95 -- Skip the first n items an iterator returns
4545
c9b91ddc9c11 util.iterators: Make a standard library (no longer injects into global namespace)
Matthew Wild <mwild1@gmail.com>
parents: 4441
diff changeset
96 function it.skip(n, f, s, var)
3392
6e31b49c4ab8 util.iterators: Add skip() to skip the first n items of an iterator
Matthew Wild <mwild1@gmail.com>
parents: 2923
diff changeset
97 for i=1,n do
6e31b49c4ab8 util.iterators: Add skip() to skip the first n items of an iterator
Matthew Wild <mwild1@gmail.com>
parents: 2923
diff changeset
98 var = f(s, var);
6e31b49c4ab8 util.iterators: Add skip() to skip the first n items of an iterator
Matthew Wild <mwild1@gmail.com>
parents: 2923
diff changeset
99 end
6e31b49c4ab8 util.iterators: Add skip() to skip the first n items of an iterator
Matthew Wild <mwild1@gmail.com>
parents: 2923
diff changeset
100 return f, s, var;
6e31b49c4ab8 util.iterators: Add skip() to skip the first n items of an iterator
Matthew Wild <mwild1@gmail.com>
parents: 2923
diff changeset
101 end
6e31b49c4ab8 util.iterators: Add skip() to skip the first n items of an iterator
Matthew Wild <mwild1@gmail.com>
parents: 2923
diff changeset
102
6e31b49c4ab8 util.iterators: Add skip() to skip the first n items of an iterator
Matthew Wild <mwild1@gmail.com>
parents: 2923
diff changeset
103 -- Return the last n items an iterator returns
4545
c9b91ddc9c11 util.iterators: Make a standard library (no longer injects into global namespace)
Matthew Wild <mwild1@gmail.com>
parents: 4441
diff changeset
104 function it.tail(n, f, s, var)
1660
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
105 local results, count = {}, 0;
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
106 while true do
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
107 local ret = { f(s, var) };
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
108 var = ret[1];
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
109 if var == nil then break; end
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
110 results[(count%n)+1] = ret;
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
111 count = count + 1;
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
112 end
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
113
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
114 if n > count then n = count; end
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
115
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
116 local pos = 0;
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
117 return function ()
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
118 pos = pos + 1;
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
119 if pos > n then return nil; end
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
120 return unpack(results[((count-1+pos)%n)+1]);
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
121 end
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
122 --return reverse(head(n, reverse(f, s, var)));
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
123 end
ae2f60a20428 util.iterators: Add tail() iterator, to return the last n items
Matthew Wild <mwild1@gmail.com>
parents: 1659
diff changeset
124
5468
2660407c3b73 util.iterators: Add ripairs() (ipairs() in reverse) (thanks Maranda)
Matthew Wild <mwild1@gmail.com>
parents: 4545
diff changeset
125 local function _ripairs_iter(t, key) if key > 1 then return key-1, t[key-1]; end end
2660407c3b73 util.iterators: Add ripairs() (ipairs() in reverse) (thanks Maranda)
Matthew Wild <mwild1@gmail.com>
parents: 4545
diff changeset
126 function it.ripairs(t)
2660407c3b73 util.iterators: Add ripairs() (ipairs() in reverse) (thanks Maranda)
Matthew Wild <mwild1@gmail.com>
parents: 4545
diff changeset
127 return _ripairs_iter, t, #t+1;
2660407c3b73 util.iterators: Add ripairs() (ipairs() in reverse) (thanks Maranda)
Matthew Wild <mwild1@gmail.com>
parents: 4545
diff changeset
128 end
2660407c3b73 util.iterators: Add ripairs() (ipairs() in reverse) (thanks Maranda)
Matthew Wild <mwild1@gmail.com>
parents: 4545
diff changeset
129
4386
ce769240f8ec util.iterators: Add range(from, to)
Matthew Wild <mwild1@gmail.com>
parents: 3540
diff changeset
130 local function _range_iter(max, curr) if curr < max then return curr + 1; end end
4545
c9b91ddc9c11 util.iterators: Make a standard library (no longer injects into global namespace)
Matthew Wild <mwild1@gmail.com>
parents: 4441
diff changeset
131 function it.range(x, y)
4386
ce769240f8ec util.iterators: Add range(from, to)
Matthew Wild <mwild1@gmail.com>
parents: 3540
diff changeset
132 if not y then x, y = 1, x; end -- Default to 1..x if y not given
ce769240f8ec util.iterators: Add range(from, to)
Matthew Wild <mwild1@gmail.com>
parents: 3540
diff changeset
133 return _range_iter, y, x-1;
ce769240f8ec util.iterators: Add range(from, to)
Matthew Wild <mwild1@gmail.com>
parents: 3540
diff changeset
134 end
ce769240f8ec util.iterators: Add range(from, to)
Matthew Wild <mwild1@gmail.com>
parents: 3540
diff changeset
135
919
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
136 -- Convert the values returned by an iterator to an array
4545
c9b91ddc9c11 util.iterators: Make a standard library (no longer injects into global namespace)
Matthew Wild <mwild1@gmail.com>
parents: 4441
diff changeset
137 function it.to_array(f, s, var)
919
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
138 local t, var = {};
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
139 while true do
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
140 var = f(s, var);
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
141 if var == nil then break; end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
142 table.insert(t, var);
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
143 end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
144 return t;
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
145 end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
146
3540
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3392
diff changeset
147 -- Treat the return of an iterator as key,value pairs,
919
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
148 -- and build a table
4545
c9b91ddc9c11 util.iterators: Make a standard library (no longer injects into global namespace)
Matthew Wild <mwild1@gmail.com>
parents: 4441
diff changeset
149 function it.to_table(f, s, var)
4441
a01b7207cb37 util.iterators: it2table: Fix variable name
Matthew Wild <mwild1@gmail.com>
parents: 4386
diff changeset
150 local t, var2 = {};
919
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
151 while true do
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
152 var, var2 = f(s, var);
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
153 if var == nil then break; end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
154 t[var] = var2;
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
155 end
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
156 return t;
75b8afb79143 util.iterators: New iterators library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
157 end
4386
ce769240f8ec util.iterators: Add range(from, to)
Matthew Wild <mwild1@gmail.com>
parents: 3540
diff changeset
158
4545
c9b91ddc9c11 util.iterators: Make a standard library (no longer injects into global namespace)
Matthew Wild <mwild1@gmail.com>
parents: 4441
diff changeset
159 return it;