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-- # luafun integration
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space = box.schema.space.create('tweedledum')
index = space:create_index('primary', { type = 'hash' })
for i = 1,5,1 do space:replace({i, i}) end
fun = require('fun')
env = require('test_run')
test_run = env.new()
-- print all methods from metatable
methods = fun.iter(getmetatable(fun.range(5)).__index):totable()
table.sort(methods)
methods
-- iter on arrays
fun.iter({1, 2, 3}):totable()
fun.iter({2, 4, 6, 8}):all(function(x) return x % 2 == 1 end)
-- iter on hashes
fun.iter({a = 1, b = 2, c = 3}):tomap()
-- iter on tuple
fun.iter(box.tuple.new({1, 2, 3}):pairs()):totable()
-- iter on space (using __ipairs)
function pred(t) return t[1] % 2 == 0 end
fun.iter(space):totable()
fun.iter(space:pairs()):totable()
space:pairs():filter(pred):drop(2):take(3):totable()
-- iter on index (using __ipairs)
fun.iter(space.index[0]):totable()
fun.iter(space.index[0]:pairs()):totable()
space.index[0]:pairs():drop(2):take(3):totable()
-- test global functions
test_run:cmd("setopt delimiter ';'")
fun.reduce(function(acc, val) return acc + val end, 0,
fun.filter(function(x) return x % 11 == 0 end,
fun.map(function(x) return 2 * x end, fun.range(1000))));
test_run:cmd("setopt delimiter ''");
t = {}
fun.foreach(function(x) table.insert(t, x) end, "abcde")
t
space:drop()
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