In this article I’ll explain about the relationship between callbacks, promises and observable streams (AKA reactive programming).
Some of the examples in this document are written in this jsbin for you to try.
This document was written using the wonderful Markdown editor classeur.io.
Common code statements in different languages for quick reference and comparison: Java, JavaScript, Kotlin, Objective-C, Python, Ruby, Scala, Swift.
| import static com.mongodb.QueryOperators.*; | |
| @Override | |
| public List<Coupon> findBuyersByMktc(String mktc, Date start, Date end) | |
| { | |
| final DBCursor cursor = coupons.find(obj() | |
| .append(FIELD_MKTC, mktc) | |
| .append(FIELD_PURCHASED_ON, obj(GTE, start).append(LT, end))); |
| title: Sample Lesson | |
| author: Ferran Maylinch | |
| # Minimum app version needed for this lesson | |
| minAppVersion: "1.0" | |
| exercises: | |
| - title: Sample Exercise |
| import java.util.*; | |
| public class Example { | |
| public static void main(String[] args) { | |
| System.out.println("I'm an example"); | |
| } | |
| } |
| title: "Intro to Jess and JavaScript" | |
| author: "Ferran Maylinch" | |
| lessonVersion: "1.0" | |
| minAppVersion: "1.4" | |
| exercises: | |
| - title: "Intro to Jess" |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <style> | |
| #map { | |
| height: 400px; | |
| width: 100%; | |
| } | |
| #searchTextField { |
| package sample; | |
| import java.util.*; // Allow us to use classes from java.util package (List, Map, etc.) without their full name | |
| /** | |
| * Summary of the building blocks of a programming language. | |
| * (Note: this is a class comment) | |
| */ | |
| public class ProgrammingBuildingBlocks { |
| package tech.bts.javaexamples; | |
| /** | |
| * Basic exercises to practice variable declarations and assignments. | |
| */ | |
| public class BasicsExercises { | |
| public static void main(String[] args) { | |
| /* |
