Download e-book for kindle: Beginning Groovy, Grails and Griffon by Vishal Layka, Christopher M. Judd, Joseph Faisal Nusairat,

By Vishal Layka, Christopher M. Judd, Joseph Faisal Nusairat, Jim Shingler

ISBN-10: 1430248076

ISBN-13: 9781430248071

Net frameworks are taking part in an enormous function within the construction of today's such a lot compelling net functions, simply because they automate the various tedious projects, permitting builders to as a substitute concentrate on delivering clients with inventive and strong positive aspects. Java builders were rather lucky during this region, having been in a position to benefit from Grails, an open resource framework that supercharges productiveness while development Java–driven websites. Grails relies on Groovy, that is a truly well known and turning out to be dynamic scripting language for Java builders and was once encouraged through Python, Ruby, and Smalltalk.

Beginning Groovy, Grails and Griffon is the 1st introductory publication at the Groovy language and its fundamental net framework, Grails. Griffon is usually lined. whereas Grails is the internet framework for construction Groovy net functions, Griffon is the deskop framework for development machine Groovy purposes. may possibly Groovy be the recent Java? It's mild, quickly and loose (open source).

This e-book will get you begun with Groovy, Grails and Griffon, and culminates within the instance and attainable software of a few real–world tasks. You stick with in addition to the improvement of every venture, enforcing and working each one software whereas studying new beneficial properties alongside the way in which.

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Additional info for Beginning Groovy, Grails and Griffon

Example text

Groovy makes working with arrays a little easier, but you have the same limitations as with Java arrays. Listing 2-29. Creating and Using Arrays 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. -3] // ["Jim", "Joseph", "Chris"] Line 1 creates a string array of size 3. Lines 3–8 use an index to access the array. Line9 illustrates using the each() method to iterate through the array. That deserves a second look. Yes, the each() method is available on the array, which is very convenient. The each() method is used to iterate through and apply the closure on every element.

23. 24. 25. 26. 27. 28. 29. each { println it } // Chris Joseph Jim println list[-1] // Jim On Line 1 of Listing 2-30, an empty list is created by assigning a property the value of [] . ArrayList. Line 3 prints the list’s size, which is 0. Lines 5–9 create a list with an item already in it and show two ways to add items to the list. Line 12 iterates over the list, invoking the closure to print out the contents. The each() method provides the ability to iterate over all elements in the list, invoking the closure on each element.

Line 7 is an example of replacing the first match with a new value. When you replace a match, it returns a new string. Pattern), which is a compiled regular expression. When you plan to use a regular expression over and over, consider creating a pattern. Reusing a pattern will give the application a performance boost. Listing 2-26. Creating and Using a Pattern 1. 2. 3. 4. matcher(saying) 31 CHAPTER 2 N GROOVY BASICS 5. 6. 7. 8. 9.

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Beginning Groovy, Grails and Griffon by Vishal Layka, Christopher M. Judd, Joseph Faisal Nusairat, Jim Shingler

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