Groovy in Action (Chinese version) page 136th clearly states that this of closure points to closure itself. The author also understands this from the code comment:
Class mother {Int field = 1Int Foo (){Return 2}
Closure birth (PARAM ){Def local = 3Def closure = {caller->[This,Field,Foo (),Local,Param,Caller,This. Owner]}Return Closure}}
Mother Julia = new mother ()
Closure = Julia. Birth (4)Context = closure. Call (this)Println context [0]. Class. Nam
1. SVN code pulling
2. Change pom to the current version.
3. In STS, import is maven project, and version is selected for advanced (you do not need to:. project name is the current version)
4. Errors returned when groovy is canceled
Properties> java build path> Source TAB> included \ excluded remove
5. Cancel js Error Reporting
Properties> java build path> Source TAB> included \ excluded remove
Properties> builders> js validater
Delete the js
Suspected title partyThis article does not involve steps, conditions, loops, spilts, joins, and roles in a workflow.Workflow is not involved.
To put it bluntly, add script control to the responsibility chain.
Extended from Apache common chain:Http://commons.apache.org/chain/
For example, the following chain describes my work day life: breakfast, go to company, work, lunch, work, go home
If it is a holiday, my life may be like this: breakfast, going out high, going home
Now I have a requirement
+ = Outputparams; result + = Outputreturntype; result + = Outputauthor; Result + = outPutdatetime;} else if (jsmethodname) {result + = Outputjsmethodname; result + = Outputdesc; result + = Outputjsparams; result + = Outputjsreturntype; result + = Outputauthor; result + = Outputdatetime;} else {result + = Outputprojectname; result + = Outputpackagename; result + = Outputclass; result + = Outputdesc; result + = Outputauthor; result + = Outputdatetime; res
In the Java language programming, the non null Judgment of object is an eternal topic. For example, we often need to judge a string as follows:
if(str!=null!str.equals("")) { ...... }
Typing such a statement really makes you sick, and sometimes you forget the "!" in the input "!str.equals" statement. Causes the code to have a logical error.
and agile Groovy language development does not require us to worry about such problems. The same judgme
Spring Web flow is a member of the spring family that simplifies the development of Web applications. The Web application development tool for spring Web flow is integrated in Grails0.6. Here's an example to show you how to use spring Web flow easily in grails.
1, "Grails create-app webflowdemo", the output is as follows:
d:\_dev\grails_appsgt;grails Create-app Webflowdemo Welcome to Grails 0.6-http://grails.org/ licensed under Apache Standard License 2.0 Grails Home is set to:d:\d\my_dev\g
The conversion between strings and numbers is a problem that we are bound to encounter in our project because the value of the variable we get from the user interface is definitely a string.
So, what we often have to do in the project is: first, you need to check the user's input to determine whether the user's input is a number; second, if so, we need to further convert it to numbers to facilitate our calculations.
In the Java language, we want to determine whether a string is a number, there
In the groovy language, Gpath may be one of our most common functions. Of course, we use gpath mostly for operations on Groovybean objects. In fact, in addition to manipulating Groovybean objects, Gpath is also used to manipulate XML documents. Even if it is used for the operation of the Groovybean object, we may not know the use of Gpath very detailed, so we will go into detail to say gpath.
First, Gpath is used to manipulate the properties of a cla
The similarities and differences between closures and anonymous internal classes.
As mentioned earlier, the maximum limit for anonymous inner classes is the ability to reference variables (their ability to reference variables): They can only reference class variables (class variables) and local final variables (locally final variables); its grammar is also puzzling, and seems verbose. Even anonymous inner classes cannot be reused and can only be used in declared classes. In contrast, closures do
So far, our MOP series has talked about all aspects of using expandometaclass, but it's worth noting that we add a method to a class at run time by Expandometaclass. Whether it's a normal method or a static method, we add a method that determines the name of the method. That is, we add a method named A, and then we can use this method a.
However, the dynamic nature of the method name is actually something we have already contacted, such as in the InvokeMethod method of
This article is very simple, that is, the following Gradle script back to the prototype:Version = 1.0Groovy Syntax sugarJava programmers are certainly not unfamiliar with JavaBeans and getter/setter methods, so they don't introduce much. Although modern Ides provide shortcuts that make it easy to generate getter and setter methods for fields, I still hate them. Fortunately, there is groovy grammar sugar in hand, you can say goodbye to the Getter/sette
/* 2. programming questions1) input a string from the keyboard, and change the upper-case letters to lower-case letters, lower-case letters to upper-case letters, and output.[Requirement](1) Use a character array to store strings (the maximum value of a string is 100 ).(2) Use the scanf function to input characters one
Source: http://blog.csdn.net/IBM_hoojo/archive/2010/04/30/5546868.aspx
Case has two formats. Simple case functions and case search functions.-- Simple case FunctionCase sexWhen '1' then 'male'When '2' then 'female'Else 'others' end-- Case search functionCase when sex = '1'
In C ++, the difference between TRUE in upper case and true in lower case is true in lower case.
1. Differences between TRUE in uppercase and true in C ++True is of the bool type;TRUE is int type, which is defined by ms in VC;
C ++ does not allow two functions to be differentiated by different return types
2. Is there any difference between "false" and "FALSE"
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