mirror of
https://github.com/1bardesign/batteries.git
synced 2024-11-10 02:31:48 +00:00
[fixed] regressions in functional.lua
This commit is contained in:
parent
a810bf4ce5
commit
b45f606cdf
@ -83,7 +83,8 @@ functional.remap = functional.map_inplace
|
||||
function functional.filter(t, f)
|
||||
local result = {}
|
||||
for i = 1, #t do
|
||||
if f(t[i], i) then
|
||||
local v = t[i]
|
||||
if f(v, i) then
|
||||
table.insert(result, v)
|
||||
end
|
||||
end
|
||||
@ -113,7 +114,8 @@ end
|
||||
function functional.remove_if(t, f)
|
||||
local result = {}
|
||||
for i = 1, #t do
|
||||
if not f(t[i], i) then
|
||||
local v = t[i]
|
||||
if not f(v, i) then
|
||||
table.insert(result, v)
|
||||
end
|
||||
end
|
||||
@ -126,7 +128,8 @@ function functional.partition(t, f)
|
||||
local a = {}
|
||||
local b = {}
|
||||
for i = 1, #t do
|
||||
if f(t[i], i) then
|
||||
local v = t[i]
|
||||
if f(v, i) then
|
||||
table.insert(a, v)
|
||||
else
|
||||
table.insert(b, v)
|
||||
@ -141,7 +144,8 @@ end
|
||||
function functional.group_by(t, f)
|
||||
local result = {}
|
||||
for i = 1, #t do
|
||||
local group = f(t[i], i)
|
||||
local v = t[i]
|
||||
local group = f(v, i)
|
||||
if result[group] == nil then
|
||||
result[group] = {}
|
||||
end
|
||||
@ -287,6 +291,7 @@ function functional.minmax(t)
|
||||
local max = t[1]
|
||||
local min = t[1]
|
||||
for i = 2, n do
|
||||
local v = t[i]
|
||||
min = math.min(min, v)
|
||||
max = math.max(max, v)
|
||||
end
|
||||
@ -342,10 +347,21 @@ functional.find_best = functional.find_max
|
||||
|
||||
--return the element of the table that results in the value nearest to the passed value
|
||||
--todo: optimise, inline as this generates a closure each time
|
||||
function functional.find_nearest(t, f, v)
|
||||
return functional.find_min(t, function(e)
|
||||
return math.abs(f(e) - v)
|
||||
end)
|
||||
function functional.find_nearest(t, f, target)
|
||||
local current = nil
|
||||
local current_min = math.huge
|
||||
for i = 1, #t do
|
||||
local e = t[i]
|
||||
local v = math.abs(f(e, i) - target)
|
||||
if v and v < current_min then
|
||||
current_min = v
|
||||
current = e
|
||||
if v == 0 then
|
||||
break
|
||||
end
|
||||
end
|
||||
end
|
||||
return current
|
||||
end
|
||||
|
||||
--return the first element of the table that results in a true filter
|
||||
|
Loading…
Reference in New Issue
Block a user