[Ramada] Build a functional Pipeline with Ramda.js

We ' ll learn how to take advantage of Ramda's automatic function currying and data-last argument order to combine a series of pure functions into a left-to-right composition, or pipeline, with RAMDA ' s pipe function.

A Simple example would take ' teams ' array and output of the best score team ' s name. We use the ' r.sort ', ' r.head ' and ' r.prop ' to get job done:

Const TEAMS = [  ' Lions ', Score:5},  ' Tigers  ', score:4}, ' Bears ', Score:6},   ' Monkeys ', score:2function(teams) {  = R.sort (A, b) = B.score > A.score, teams);   = R.head (sorted);   = R.prop (' name ', bestteam);   return  = gettopname (teams) console.log (Result)

One thing in Ramda which are really cool that, for example, ' R.sort ' takes the arguements of the If you don ' t passin the second A Rguement which is ' teams ', it'll then return a function, so that it enable you currying function and take second Argueme NT as Param.

Const TEAMS =[{name:' Lions ', score:5}, {name:' Tigers ', score:4}, {name:' Bears ', score:6}, {name:' Monkeys ', score:2},];const Getbestteam= R.sort (A, b) = B.score >a.score); Const Getteamname= R.prop (' name '); Const Gettopname=function(teams) {const sorted=Getbestteam (teams); Const Bestteam=R.head (sorted); Const name=Getteamname (Bestteam); returnname;} Const result=Gettopname (teams) console.log (Result)

We'll still get the same result.

Use the ' r.pipe ' to chain function together

In functional programming or Lodash (_.chain), we get used to write chain methods, in Ramda, we can use R.pipe ():

 Const teams = [{name:  ' Lions ', Score:5 ' Tigers ', Score:4 ' Bears ', Score:6 ' Monkeys ', Score:2},];const getbestteam  = R.sort ((b) and B. Score > A.score); Const Getteamname  = R.prop (' name '  = R.pipe (Getbestteam, R.head , getteamname);  /*   const gettopname = function (teams) {Const SORTED = Getbestteam (teams);  Const Bestteam = r.head (sorted);  Const NAME = Getteamname (Bestteam); return name;}  */ const result  = Gettopname (teams) Console.log ( Result)  

[Ramada] Build a functional Pipeline with Ramda.js