I hereby claim:
- I am vibhanshuc on github.
- I am vibhanshu (https://keybase.io/vibhanshu) on keybase.
- I have a public key ASCbWudPsa9ONq7cwt_KhxghIKeumsghMVclP6XQkNSfiwo
To claim this, I am signing this object:
I hereby claim:
To claim this, I am signing this object:
function calculateBill(total, tax = 0.15, tip = 0.05){ | |
console.log(total + (total * tax) + (total * tip)); | |
} | |
// usage | |
calculateBill(500); // 600 | |
calculateBill(500, 0.2); // 625 |
While attempting to explain JavaScript's reduce
method on arrays, conceptually, I came up with the following - hopefully it's helpful; happy to tweak it if anyone has suggestions.
JavaScript Arrays have lots of built in methods on their prototype. Some of them mutate - ie, they change the underlying array in-place. Luckily, most of them do not - they instead return an entirely distinct array. Since arrays are conceptually a contiguous list of items, it helps code clarity and maintainability a lot to be able to operate on them in a "functional" way. (I'll also insist on referring to an array as a "list" - although in some languages, List
is a native data type, in JS and this post, I'm referring to the concept. Everywhere I use the word "list" you can assume I'm talking about a JS Array) This means, to perform a single operation on the list as a whole ("atomically"), and to return a new list - thus making it much simpler to think about both the old list and the new one, what they contain, and
from scrapy import cmdline | |
from swishpick.pipelines import * | |
from datetime import datetime | |
import subprocess | |
import time | |
_week_day_relations = { | |
'Monday': 1, | |
'Tuesday': 2, |
// Create a closure | |
var SecretStore = (function() { | |
var data, secret, newSecret; | |
// Emulation of a private variables and functions | |
data = 'secret'; | |
secret = function() { | |
return data; | |
} | |
newSecret = function(newValue) { |
(function () { | |
'use strict'; | |
function Person(name, age, gender) { | |
this.name = name; | |
this.age = age; | |
this.gender = gender; | |
} | |
Person.prototype.getName = function () { |
(function () { | |
'use strict'; | |
function Person(name, age, gender) { | |
this.name = name; | |
this.age = age; | |
this.gender = gender; | |
} | |
Person.prototype.getName = function () { |