Returns a copy of this datetime with a different time zone, preserving the millisecond instant. Both have plugins that can generate eclipse project files. With more than 250 readytouse recipes and 700 code examples, this comprehensive cookbook covers the most common problems youll encounter when using the scala language, libraries, and tools. Scala helps people solve real problems in an elegant way. This project forked from scalatime since it seems that scalatime is no longer maintained installation. Buy scala for beginners this book provides a stepbystep guide for the complete beginner to learn scala. You can use several different tools to build your scala projects, including ant, maven, gradle, and more.
Things on this page are fragmentary and immature notesthoughts of the author. It explains the basic configuration required to compile, test, and run a project using sbt. It shows how to set up the build definition for a scala project using sample code to explain different scenarios and use cases. Much like scalatests, specs2 works with sbt, but it has some unique selection from testing in scala book. It is particularly useful to programmers, data scientists, big data engineers, students, or just about anyone who wants to get up to speed fast with scala especially within an enterprise context. The trouble is that a big type system is inevitably a complex type system. I woke up this morning june 7, 20 thinking it must be about 200 days to christmas. Foregoing any simple ways to determine that, i decided it would be a good time to use the nscala time library, a scala wrapper around joda time sticking with the time theme, i havent much free time today, so without further ado, here is some scala code that determines the number of days between today. Jan 08, 2015 an introduction on maven, gradle and sbt.
So if your project takes a lot of time to build, and you dont want to. Any type with a getter gettimestamp returning a java. Im having trouble using joda time in my scala project in scala ide. Includes an sbtnativepackager example to produce a docker image. The joda time library is a great replacement for javas date and calendar classes. Scala exercises is a series of lessons and exercises created by 47 degrees. Besides work, i love reading books, learning spanish as i live in. Download getting started with sbt for scala pdf ebook. How to set up bazel build tool for your scala project scala. Jan 01, 20 a practical and fastpaced guide, getting started with sbt for scala walks you through the setup of scala projects in sbt with sample code for common as well as critical scenarios. Much like scalatests, specs2 works with sbt, but it has some unique differences that a. Contribute to shibayu36 joda time fake scala development by creating an account on github. An introduction to maven gradle and sbt slideshare. Grails in action 2014 by peter ledbrook, glen smith.
This project forked from scala time since it seems that scala time is no longer maintained installation. There are a few interactive resources for trying out scala, to get a look and feel of the language. This presentation shows how to setup a project, manage dependencies and build it using automated tools slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Im talking about compilation times and test execution times, in other words, having to wait instead of working. Spark can create distributed datasets from any file stored in the hadoop distributed file system hdfs or other storage systems supported by hadoop including your local file system, amazon s3, hypertable, hbase, etc. Work still needs to be done, but a lot of people have been asking for it, so i released it early. This blog post contains a collection of scala number and date examples.
This will be either standard time or daylight saving time depending on the time of year and whether the location uses daylight saving time. Ive worked in scala for 6 years on projects ranging in size from 100s to 100ks of loc and built with sbt, pants, and maven. Wall time this is what a local clock on the wall reads. Functional programming principles in scala online course principles of reactive programming online course scala. Foregoing any simple ways to determine that, i decided it would be a good time to use the nscala time library, a scala wrapper around joda time. In this tutorial, we will import the popular jodatime library so that we can later alias a. Sbt is a assemble software designed for scala and java duties. Whatever the problem, the type system is bound to be part of the solution.
Annotations in java are optional if they arent found, the class still loads and runs. Feb 25, 2015 create a sbt projectadd a sbt plugin of the idesay eclipse and generate a eclipse projectimport this project in idewrite ur coderun it using sbt from command lineif u are using intellij as ur ide,u can run the program directly from ide. It provides a good balance between conciseness of a language, extensibility and performance. This site uses cookies to offer you a better browsing experience. For a quick start, have a look at our bootstrapping skeleton. A practical and fastpaced guide, getting started with sbt for scala walks you through the setup of scala projects in sbt with sample code for common as well as critical scenarios. Unlike the java timezone class, datetimezone is immutable. Programming in scala, third edition, is the definitive book on scala, the new language for the java platform that blends objectoriented and functional programming concepts into a unique and powerful tool for developers.
Best practices for experienced grails developers 20 by burt beckwith. I recently surveyed the current state of these three tools and concluded that sbt is better suited than maven to scala projects needs. Scala maven plugin requires maven 3 maven scala plugin older, works with maven 2 scalalang tools page. Coauthored by the designer of the scala language, this authoritative book will teach you, one step at a time, the scala language and the ideas behind it. How to package a scala project to a jar file with sbt. Clear and concise examples for the person who wants to use sbt in production. It is not meant to readers but rather for convenient reference of the author and future improvement. In joda time and a brief history of the world, i provide a quick rundown of calendaring throughout the centuries, describe utc, compare utc to gmt, discuss how time is calculated, and then dive into joda time in every popular jvm language. Includes an example of sbt modules and scalatest tdd. Imagine working with a build tool that rebuilds only what is necessary, using a distributed cache, so if module a is built by one. Foregoing any simple ways to determine that, i decided it would be a good time to use the nscalatime library, a scala wrapper around joda time. You have probably encountered this problem while working with sbt and. It gives builders with a high productiveness work setting subsequently it is on the market in truly helpful when dealing with big duties.
Getting started with sbt for scala will get you going with using sbt and as well as introduces its superior concepts. As i mentioned earlier, most javabased build tools are general in their nature, i. Its possible to add custom mapping, for example if underlying db doesnt support boolean datatype and returns integer instead. Sbt is very difficult to learn and, outside the academic world, almost inaccessible to business. Getting started with sbt for scala will get you going with. The first time you run sbt, it may take a while to download all the dependencies it needs, but after that. Here are a few books and tutorials to get you started. If you dont wish to migrate, you can add the jodaforms module in your build. Jan 01, 20 save time and trouble when using scala to build objectoriented, functional, and concurrent applications. What would be best site, book, or tutorial for a scala. Jun 29, 2016 how to package a scala project to a jar file with sbt. Joda time repairs those issues and offers a robust and immutable date, time, and duration api.
Using joda time in scala scalajtime with intellij idea. Getting started with sbt for scala is for developers working on scala projects who are interested in learning and utilizing simple build tool to manage the build process. Access over 7,000 practical books and videos with a packt subscription the online tech library. Its a great way to get a brief introduction to scala while testing your knowledge along the way. In fact, the goal of the play scala sql access layer is to provide several apis to effectively transform jdbc data into other scala structures. Ammonite lets you use the scala language for scripting purposes. Bookingstore extends inmemorystorebooking def bookref. The scala build tool sbt scala book scala documentation. You have probably encountered this problem while working with sbt and bigger projects. Sbt has single handedly destroyed the scala community.
But a tool named sbt was the first build tool that was specifically created for scala, and these days its supported by lightbend, the company that was cofounded by scala creator martin odersky that also maintains akka, the play web framework, and more. First of all, sbt was developed as a scala build tool from the very beginning. Jul 11, 20 the joda time library is a great replacement for javas date and calendar classes. Related books jruby rails web application development springerbriefs in computer science 2014 by deepak vohra deploying with jruby. Unlike the cookbook, i dont describe the examples here much at all, i just show the examples, mostly as a reference for myself and anyone else that can benefit from them. Create a sbt projectadd a sbt plugin of the idesay eclipse and generate a eclipse projectimport this project in idewrite ur coderun it using sbt from command lineif u are using intellij as ur ide,u can run the program directly from ide.
Deliver scalable web apps using the jvm pragmatic programmers 2012 by joe kutner. From the spark scala programming guides section on hadoop datasets. Use the cookie settings link to activatedeactivate specific types of cookies. Save time and trouble when using scala to build objectoriented, functional, and concurrent applications. Getting started with sbt for scala introduces sbt and its various features. Theyre immutable by default, have a much richer and nicer api, and can easily be converted to javas date and calendar classes when necessary. Daniel hinojosa biography july 12 15, 2011 denver, co. Provides utilities to fake current time gotten by joda time.
492 1399 748 1642 449 1437 844 39 1121 287 485 636 224 126 252 1359 411 267 1672 335 1095 1471 413 836 1204 663 1292 1529 1523 1653 238 336 1252 1287 228 1063 1193 158 767 1156