增加ramda目录

Author: navono

basicSyntaxSample/ramda.js Ramda/ramda.js

@@ -0,0 +1,55 @@
+const R = require('ramda');
+
+// 测试输出
+const out = i => console.log(i);
+
+// let sub = R.reduce(R.subtract, 0);
+// R.compose(out, sub)([1, 2, 3]);
+
+// 在不增加函数的情况，使用 isEven 查找第一个奇数
+// complement 可以对函数返回值取反，接受一个函数 f ，返回一个新函数 g
+// const isEven = x => x % 2 === 0;
+// let find = R.find(R.complement(isEven));
+// R.compose(out, find)([1, 2, 3, 4]);
+
+
+// const gt10 = x => x > 10;
+// const even = x => x % 2 === 0;
+// const gt20 = x => x > 20;
+// var f = R.either(even, gt20, gt10);
+// R.compose(out, f)(17);
+
+
+const multiply = (a, b) => a * b
+const addOne = x => x + 1
+const square = x => x * x
+ 
+// const operate = (x, y) => {
+//   const product = multiply(x, y)
+//   const incremented = addOne(product)
+//   const squared = square(incremented)
+ 
+//   return squared
+// }
+
+// also like
+// cosnt operate = (x, y) => square(addOne(multiply(x, y)));
+
+// from left to right
+// const operate = R.pipe(
+//   multiply,
+//   addOne,
+//   square
+// )
+
+// from right to left
+const operate = R.compose(
+  square,
+  addOne,
+  multiply
+);
+
+// 有个用法是，定义函数的时候，使用 pipe，调用函数的时候，使用 compose
+ 
+R.compose(out, operate)(3, 4) ;
+

Ramda/start.js

@@ -9,7 +9,8 @@ module.exports = {
   devtool: 'source-map',
   // entry: path.resolve(__dirname, './react/components/HOC/index.js'),
   // entry: path.resolve(__dirname, './echarts/twoGrid.js'),
-  entry: path.resolve(__dirname, './echarts/dynamicData.js'),
+  entry: path.resolve(__dirname, './echarts/multipleX.js'),
+  // entry: path.resolve(__dirname, './echarts/dynamicData.js'),
   output: {
     filename: '[name].js',
     path: path.resolve(__dirname, './build')