Use const instead of let

Author: tshemsedinov

.eslintrc.yml

@@ -0,0 +1,140 @@
+parserOptions:
+  ecmaVersion: 6
+env:
+  node: true
+extends: 'eslint:recommended'
+globals:
+rules:
+  indent:
+    - error
+    - 2
+    - SwitchCase: 1
+      VariableDeclarator:
+        var: 2
+        let: 2
+        const: 3
+      MemberExpression: 1
+  linebreak-style:
+    - error
+    - unix
+  quotes:
+    - error
+    - single
+  semi:
+    - error
+    - always
+  eqeqeq:
+    - error
+    - always
+  no-loop-func:
+    - error
+  strict:
+    - error
+    - global
+  block-spacing:
+    - error
+    - always
+  brace-style:
+    - error
+    - 1tbs
+    - allowSingleLine: true
+  camelcase:
+    - error
+  comma-style:
+    - error
+    - last
+  comma-spacing:
+    - error
+    - before: false
+      after: true
+  eol-last:
+    - error
+  func-call-spacing:
+    - error
+    - never
+  key-spacing:
+    - error
+    - beforeColon: false
+      afterColon: true
+      mode: minimum
+  keyword-spacing:
+    - error
+    - before: true
+      after: true
+      overrides:
+        function:
+          after: false
+  max-len:
+    - error
+    - code: 80
+      ignoreUrls: true
+  max-nested-callbacks:
+    - error
+    - max: 5
+  new-cap:
+    - error
+    - newIsCap: true
+      capIsNew: true
+      properties: true
+  new-parens:
+    - error
+  no-lonely-if:
+    - error
+  no-trailing-spaces:
+    - error
+  no-unneeded-ternary:
+    - error
+  no-whitespace-before-property:
+    - error
+  object-curly-spacing:
+    - error
+    - always
+  operator-assignment:
+    - error
+    - always
+  operator-linebreak:
+    - error
+    - after
+  semi-spacing:
+    - error
+    - before: false
+      after: true
+  space-before-blocks:
+    - error
+    - always
+  space-before-function-paren:
+    - error
+    - never
+  space-in-parens:
+    - error
+    - never
+  space-infix-ops:
+    - error
+  space-unary-ops:
+    - error
+    - words: true
+      nonwords: false
+      overrides:
+        typeof: false
+  no-unreachable:
+    - error
+  no-global-assign:
+    - error
+  no-self-compare:
+    - error
+  no-unmodified-loop-condition:
+    - error
+  no-constant-condition:
+    - error
+    - checkLoops: false
+  no-console:
+    - off
+  no-useless-concat:
+    - error
+  no-useless-escape:
+    - error
+  no-shadow-restricted-names:
+    - error
+  no-use-before-define:
+    - error
+    - functions: false

.jshintrc

@@ -0,0 +1,4 @@
+{
+  "esversion": 6,
+  "node": true
+}

JavaScript/1-closure.js

@@ -1,14 +1,14 @@
 'use strict';
 
-let log = function(base, n) {
+const log = function(base, n) {
   return Math.log(n) / Math.log(base);
 };
 
 function createLog(base) {
-  return function (n) {
+  return function(n) {
     return log(base, n);
   };
 }
 
-let lg = createLog(10);
-let ln = createLog(Math.E);
+const lg = createLog(10);
+const ln = createLog(Math.E);

JavaScript/2-lambda.js

@@ -1,8 +1,8 @@
 'use strict';
 
-let log = function(base, n) {
+const log = function(base, n) {
   return Math.log(n) / Math.log(base);
 };
 
-let lg = n => log(10, n);
-let ln = n => log(Math.E, n);
+const lg = n => log(10, n);
+const ln = n => log(Math.E, n);

JavaScript/3-bind.js

@@ -1,8 +1,8 @@
 'use strict';
 
-let log = function(base, n) {
+const log = function(base, n) {
   return Math.log(n) / Math.log(base);
 };
 
-let lg = log.bind(null, 10);
-let ln = log.bind(null, Math.E);
+const lg = log.bind(null, 10);
+const ln = log.bind(null, Math.E);

JavaScript/4-curry.js

@@ -0,0 +1,17 @@
+'use strict';
+
+const sum3 = function(a, b, c) {
+  return a + b + c;
+};
+
+function curry(fn, x) {
+  return function(...args) {
+    args.push(x);
+    return fn(...args);
+  };
+}
+
+const f1 = curry(sum3, 10);
+const f2 = curry(f1, 5);
+const y = f2(1);
+console.log(y);