2,875
edits
Module:FunList: Difference between revisions
From Melvor Idle
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local num = tonumber(v) | local num = tonumber(v) | ||
if num == nil then error('Value is NaN') end | if num == nil then error('Value is NaN') end | ||
if | if num > h then h = num end | ||
end | end | ||
return h | return h | ||
| Line 161: | Line 161: | ||
local num = tonumber(v) | local num = tonumber(v) | ||
if num == nil then error('Value is NaN') end | if num == nil then error('Value is NaN') end | ||
if | if num < l then l = num end | ||
end | end | ||
return l | return l | ||
end | |||
function funlist:sum() | |||
local total = 0 | |||
for _, v in pairs(self.mytable) do | |||
local num = tonumber(v) | |||
if num == nil then error('Value is NaN') end | |||
total = total + num | |||
end | |||
return total | |||
end | end | ||
| Line 210: | Line 220: | ||
table.sort(self.mytable, sortFunc) | table.sort(self.mytable, sortFunc) | ||
return self | return self | ||
end | |||
-- Projects each element of a sequence into a new form. | |||
function funlist:select(selector) | |||
assert(selector) | |||
local result = {} | |||
for _, v in pairs(self.mytable) do | |||
local val = selector(v) | |||
assert(val) | |||
table.insert(result, selector(v)) | |||
end | |||
self.mytable = result | |||
return self | |||
end | |||
-- Projects each element of a sequence into a new form and flattens the result. | |||
function funlist:selectMany(selector) | |||
assert(selector) | |||
local result = {} | |||
for _, item in pairs(self.mytable) do | |||
local tbl = selector(item) | |||
-- Resulting object must be a table here! | |||
assert(typeof(tbl) == 'table') | |||
for _, value in pairs(tbl) do | |||
table.insert(result, value) | |||
end | |||
end | |||
end | |||
-- Filters a sequence of values based on a predicate. | |||
function funlist:where(predicate) | |||
assert(predicate) | |||
local result = {} | |||
for k, v in pairs(tbl) do | |||
if predicate(v) then | |||
result[k] = v | |||
end | |||
end | |||
self.mytable = result | |||
return self | |||
end | |||
function funlist:toDictionary(keySelector, valueSelector) | |||
assert(keySelector) | |||
assert(valueSelector) | |||
local dict = {} | |||
for _, item in pairs(self.mytable) do | |||
local key = keyselector(item) | |||
local val = valueSelector(item) | |||
dict[key] = val | |||
end | |||
-- Create and return a new FL so we can chain more functions if needed. | |||
local newFL = funlist.new(dict) | |||
return newFL | |||
end | |||
function funlist:toLookup() | |||
end | |||
function funlist:getTable() | |||
return self.mytable | |||
end | end | ||
