swapnilmishra

function getCardType(cardNum) {

    if(!luhnCheck(cardNum)){
	return "";
    }
    var payCardType = "";
    var regexMap = [
      {regEx: /^4[0-9]{5}/ig,cardType: "VISA"},
      {regEx: /^5[1-5][0-9]{4}/ig,cardType: "MASTERCARD"},
      {regEx: /^3[47][0-9]{3}/ig,cardType: "AMEX"},

Zyzle

import { Injectable } from '@angular/core';
import { CanActivate, Router } from '@angular/router';

import { FirebaseAuth, FirebaseAuthState } from 'angularfire2';
import { Observable } from 'rxjs/Observable';

@Injectable()
export class AuthGuard implements CanActivate {

  constructor(private auth: FirebaseAuth, private router: Router) { }

odigity

    There is no way to store an empty object/array/null value.
    There are also no actual arrays.  Array values get stored as objects with integer keys.
        (If all keys are integers, it will be returned as an array.)

    Basically, it's one giant tree of hashes with string keys.
    Simply write a value to any location, and the intermediary locations will automatically come into existance.

 ── Classes ──

    DataSnapshot  : Container for a subtree of data at a particular location.

ckimrie

import { Component, OnInit, OnDestroy } from '@angular/core';
import {Http} from "@angular/http";
import { LocalCacheService } from "./local-cache.service";

@Component({
  selector: 'app-example',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class ExampleComponent implements OnInit, OnDestroy {

Nikolaj-K

import math

ICO_SUPPLY = 10**9
DECIMALS = 8
FLOAT_FACTOR = 10**DECIMALS

IMUSIFY_OPERATION_STACK = (3-1) * ICO_SUPPLY * FLOAT_FACTOR
SOME_USER_ADDRESS = 'ASsudg...poor soul'
IMUSIFY_MAIN_IMU_ADDRESS = "AXjsdb...much IMU here"
IMUSIFY_OPERATION_IMU_ADDRESS = "AKjsdb...less IMU here"

AliYusuf95

import { ModuleMetadata, Type } from '@nestjs/common/interfaces'

/**
 * Options that ultimately need to be provided to create a MongoDB connection
 */
export interface MongoModuleOptions {
    connectionName?: string
    uri: string
    dbName: string
    clientOptions?: any

sandeepsuvit

import { ModuleMetadata, Type } from '@nestjs/common/interfaces'

/**
 * Options that ultimately need to be provided to create a MongoDB connection
 */
export interface MongoModuleOptions {
    connectionName?: string
    uri: string
    dbName: string
    clientOptions?: any

nhudinhtuan

Day 1

• Read How to answer a coding interview.
• Read Using sliding window technique to solve coding interview questions.
• Practice coding Array 1 Two Sum
• Practice coding Array 2 Three Sum
• Practice coding Array 3 Max Consecutive Ones III
• Practice coding Array 4 Maximum Product Subarray

Day 2

• Read Using state machine to solve complex coding interview questions.

nathanhleung

Fix macOS Hanging Issue

Problem

Hey Apple users:

If you're now experiencing hangs launching apps on the Mac, I figured out the problem using Little Snitch.

It's trustd connecting to http://ocsp.apple.com >

Luccasoli

import { useFocusEffect } from '@react-navigation/core';
import { useCallback } from 'react';
import {
  QueryFunction,
  QueryKey,
  useQuery,
  UseQueryOptions,
  UseQueryResult,
} from 'react-query';