cause i want it my way.
fnuc is a library for functional programming in coffeescript (and javascript). The reason for providing the "standard" javascript methods as pure functions is to facilitate functional composition and higher order functions.
npm install -S fnuc
Inject into global
require('fnuc').expose(global);
Or use it library style with a prefix:
F = require('fnuc'); // all functions under F
Use destructuring assignment to pick things you want.
Coffeescript
{split, map} = require 'fnuc'
Javascript
let {split, map} = require('fnuc');
bower install -S fnuc
Tested on IE9+, Chrome 38+, Firefox 34+, Safari 7+.
Design philosophy:
-
fnuc tries to follow the principle of least astonishment. This shows in function argument order which is clearly spelled out in this stack overflow answer.
-
Less is more. fnuc provides the most used basics, not every conceivable utility function. Please suggest functions to add if anything important is missing.
-
Javascript is liberating. Functional programming purists may argue the virtues of immutability and typing whilst I would argue the opposite; the lack of rigour has made programming fun again. fnuc embraces all of javascript and will mutate where appropriate.
We expect a function such as div
to have the following two forms:
div(a, b) # a divided by b
div(b)(a) # right section (`div` b)
div
is curried and div10 = div(10)
can only have the meaning
division by 10. Hence div10 20
should equal 2
.
Other least astonished variants that are not in fnuc:
div(_, b) # left section (a `div`)
a `div` b # infix haskell style
a.div b # infix coffeescript style
Plifting is a strategy for using simple functions (perhaps even pure functions) when dealing with promises.
There is a separate page on plifting.
I
add
all
always
and
any
apply
arity
arityof
at
both
call
clone
comp
compose
concat
cond
contains
converge
curry
div
drop
each
either
eq
eql
evolve
filter
firstfn
flip
fold1
fold
foldr1
foldr
get
gt
gte
has
head
iif
index
indexfn
isdef
isplain
join
keys
keyval
last
lastfn
lcase
len
lt
lte
map
match
max
maybe
merge
min
mixin
mod
mul
not
nth
ofilter
omap
once
or
pall
partial
partialr
pfail
pick
pipe
plift
replace
reverse
search
set
shallow
slice
sort
split
sub
tail
take
tap
trim
type
typeis
ucase
unapply
uniq
uniqfn
values
zip
zipobj
zipwith
The MIT License (MIT)
Copyright © 2015 Martin Algesten
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.