groovy and grails

The groovy language does a lot of good work on the input parameters of the method, some of which can improve the readability of the code, and some can provide easy and agile coding. In the previous text, we have introduced some, such as the Groovy Discovery map and DSL. In this series, we will introduce some of them that have not been mentioned before. First, it is about the use of parentheses when invokin

xml| syntax Groovy's team leader--Guillaume Laforge says that MOP (Meta Object Protocol) is his favorite groovy feature. Using mop can simply intercept and interpret properties and methods, and intercept has become familiar with AOP. In groovy, by overloading the Groovyobject Get/setproperty () function and the InvokeMethod () function, you can add your own hooks and behavior, More simple than Java to impl

Make sure you understand Ngrinder's groovy scripting structure: Ngrinder's Groovy Scripting Usage Guide (groovy scripting structure) When you create a Groovy script on Ngrinder, it automatically generates a basic script that lets us split the description Import Httpclient.cookie Import httpclient.cookiemodule import ht

Label:Groovy has a database-enabled class library:Search for SQL Groovy in Bing, find sql (groovy 2.4.3)and click to open this URL:Http://docs.groovy-lang.org/latest/html/api/groovy/sql/Sql.htmlWith Groovy's class SQL, you can connect to the database and make the data more and more censored, referred to as crudCRUD means:create, Retrieve, Update, DeleteGroovy

#{if session.get ("User_permission"). Contains ("Usermanager")}#{/if}If judgment in the Html+groovy template of the play Freamwork page

If you want to retrieve variables from a complex nested data structure, velocity is used, but groovy is recommended because it is more convenient for computation, and gave me a general framework, which is still being explored ...... Put parameters in Map Public object executescript (string script, Map

Groovy tip 35 Regular Expression 4 We know that in regular expressions, some strings are used to express some special purposes. For example, "." represents all characters; "^" represents non-; and so on. When we see these usage, we can ask in turn, if "." represents all the characters, then what will be used to match "." In the string? To solve this problem, you must add "/" to the regular expression to match the original string. The following is a

Groovy exploration-adding constructors and static methods during the mop six Runtime Constructor is a method that we like to overload, because we encounter various situations when instantiating a class, such as in some situations, instances of a series of classes may have attributes with the same value. At this time, when instantiating an object, we do not want to inject these identical values into each object separately, this is a tedious task. A

The returned results may need to be verified during case construction. You can use the groovy script to complete this function. The specific steps are as follows: (1) Use the groovyutils provided by soapui to retrieve the returned XML message xmlholder Def policyutils = new COM. eviware. soapui. Support. policyutils (context) Def holder = policyutils. getxmlholder ("balancequery # response ") (2) Use XPath in xmlholder to obtain the returned f

Basic Input and Output 5.1 Basic output Print XXX // same row output Println XXX // line feed output Output string: Def message = "My name is Michael" Println ("here is:" + $ {message }) Output list and ing Def numbers = [11,12, 13,14] Println "numbers :$ {numbers}" // traverses the list 5.2 format the output Simple output Prinf ("My name is Michael", []) Format output Prinf (format, values) // % d integer output % F Floating Point Output Def A = 3 B = 5 P

Array:def x = new String[5]x[0] = "India" x[1] = "USA" x[2] = "Korea" x[3] = "Japan" x[4] = "China" log.info "Size of list is" + X.S Ize () Log.info "The first item in list is:" +x[0]for (String item:x) {Log.info Item}Result:Tue June 14:50:08 CST 2015:info:size of list is 5Tue June 14:50:08 CST 2015:info:the first item in list Is:indiaTue June 14:50:08 CST 2015:info:indiaTue June 14:50:08 CST 2015:info:usaTue June 14:50:08 CST 2015:info:koreaTue June 14:50:08 CST 2015:info:japanTue June 14:50:08

def x= "I like to read books before Bed" Def temp = X.split ("") Log.info "Size of an array is:" +temp.lengthlog.info Temp[0]lo G.info temp[1]log.info x.substring (2,8) log.info x.indexof ("T") Log.info X.indexof ("book") Log.info x.indexOf ("E", 6) Log.info X.charat (5)Result:Tue June 14:40:49 CST 2015:info:size of array is:7Tue June 14:40:49 CST 2015:info:iTue June 14:40:49 CST 2015:info:likeTue June 14:40:49 CST 2015:info:like tTue June 14:40:49 CST 2015:info:7Tue June 14:40:49 CST 2015:info:

Lisp is a simple and powerful language with a very simple syntax:(+ 1 2)The above meaning is: + is a method or function, 1, 2 is a parameter, fn=1+2, that is, the sum is evaluated, the result is: 3Double brackets are used to remind the interpreter to start and end.Previously wrote an article in Iteye to briefly explain how to write Lisp's interpreter:http://gyc567.iteye.com/blog/2242960It also draws a sketch to illustrate:Because Lexer ( lexical analyzer ) is the main job is to convert the progr

[] b) { "$a and $b"}receivevarargs (1,2,3,4,5) receivearray (1,2,3,4,5) /* OUTPUT1 and [2, 3, 4, 5]1 and [2, 3, 4, 5] */4. Annotations [email protected]classworker{def work () {println' Work '} def Analyze () {println' Analyze '} def writereport () {println' Writereport '}}classexpert{def Analyze () {println' Expert Analyze '}}classmanager{@Delegate expert expert=NewExpert () @Delegate worker worker=NewWorker ()}def Ironcrow=NewManager () Ironcrow. Work () Ironcrow. Analyze () Ironcrow. Writ