construction

At which phase is managed bean constructed and which constructor is used

由 两盒软妹~` 提交于 2019-12-23 19:14:06
问题 Consider example of JSF based web-app hello1 from official tutorial with addition constructor in managed bean. The follow index.xhtml facelet <html lang="en" xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://xmlns.jcp.org/jsf/html"> <h:head> <title>Facelets Hello Greeting</title> </h:head> <h:body> <h:form> <h:graphicImage url="#{resource['images:duke.waving.gif']}" alt="Duke waving his hand"/> <h2>Hello hui, my name is Duke. What's yours?</h2> <h:inputText id="username" title="My name is:

C++11 enum class instantiation

由 只愿长相守 提交于 2019-12-23 12:34:14
问题 I've encountered the following form of enum class variable instantiation and it is compiling without any warning or error under VS2012: UINT32 id; enum class X {apple, pear, orange}; X myX = X(id); Moreover, sending X(id) as an argument to a function expecting X type param compiled as well. I'm not sure if the result is always correct or it's just a strange compiler behavior. However, trying to do X myX(id); instead of the above resulted in compilation error: error C2440: 'initializing' :

Can a java subclass's private final field be initialized before the super constructor completes?

由 ☆樱花仙子☆ 提交于 2019-12-20 03:26:46
问题 I have a pair of classes looking like this; public abstract class Class1 { //... public Class1() { //... function2(); //... } protected abstract void function2(); } public class Class2 implements Class1 { private final OnSomethingListener mOnSomethingListener = new OnSomethingListener() { @Override onSomething() { doThatOtherThing(); } } protected void function2() { //uses mOnSomethingListener //however mOnSomethingListener is null when this function is called from super() //... } public

Prolog; if and (stopping) recursion

由 旧巷老猫 提交于 2019-12-13 16:26:16
问题 In trying to better understand prolog, lists and recursion as a whole I'm working my way through various simple tasks I've assigned to myself. Among others is removing double entries from a list. I've defined a rule: is_on(Item, [Ah|At]) :- Ah = Item; is_on(Item, At). This checks if 'Item' is on the list X or not. So I thought I could expand this to define a filter_double predicate as well: filter_doubles([Ah|At], Result) :- (not(is_on(Ah, At)) -> Result = [Ah|Result] ; filter_doubles(At,

Programmatic HTMLDocument generation using Java

由 别来无恙 提交于 2019-12-12 07:47:07
问题 Does anyone know how to generate an HTMLDocument object programmatically in Java without resorting to generating a String externally and then using HTMLEditorKit#read to parse it? Two reasons I ask: Firstly my HTML generation routine needs to be very fast and I assume that parsing a string into an internal model is more costly than directly constructing this model. Secondly, an object-oriented approach would likely result in cleaner code. I should also mention that, for licensing reasons, I

url construction htaccess

由 扶醉桌前 提交于 2019-12-12 02:17:53
问题 Lets say I have a link to one of my page that looks like: mysite.com/48YSWD96, I need it to look like: mysite.com/?d=48YSWD96. How do I achieve this? Can I achieve this by modifying my htaccess file? which currently looks like this... RewriteEngine on RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME}\.php -f RewriteRule ^([^/]+)/$ $1.php RewriteRule ^([^/]+)/([^/]+)/$ /$1/$2.php RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_URI

jquery widget, _create or _init

由 巧了我就是萌 提交于 2019-12-08 17:06:14
问题 Some jquery plugin extend widget use _create method, while others use _init method, can someone explain the differences between the two? Also any guidance on when it is better to extend widget or directly extend jquery.fn? 回答1: The downside to extending widget (as opposed to $.fn) is that you create a dependency on jquery-ui which defines the widget "class". That dependency could be expensive for users of your plugin that don't also use jquery-ui. As far as _create vs _init goes, I'm pretty

./configure--with-boost no such file or directory

由 試著忘記壹切 提交于 2019-12-08 04:48:38
问题 When I used ./configure the terminal returned: checking for Boost headers version >= 1.41.0... no configure: error: cannot find Boost headers version >= 1.41.0 So i used the command "./configure-with-boost=/usr/include" also but it only returns No such file or directory I have the latest version of Boost headers extracted to /usr/include 回答1: --with-boost=... is a command line options that must be separated with at least one whitespace from the name of the executable and the rest of arguments

Programmatic HTMLDocument generation using Java

由 老子叫甜甜 提交于 2019-12-03 12:41:50
Does anyone know how to generate an HTMLDocument object programmatically in Java without resorting to generating a String externally and then using HTMLEditorKit#read to parse it? Two reasons I ask: Firstly my HTML generation routine needs to be very fast and I assume that parsing a string into an internal model is more costly than directly constructing this model. Secondly, an object-oriented approach would likely result in cleaner code. I should also mention that, for licensing reasons, I can't resort to using any libraries other than those shipped with the JVM. Thanks, Tom One object

Can a java subclass's private final field be initialized before the super constructor completes?

由 微笑、不失礼 提交于 2019-12-02 01:00:56
I have a pair of classes looking like this; public abstract class Class1 { //... public Class1() { //... function2(); //... } protected abstract void function2(); } public class Class2 implements Class1 { private final OnSomethingListener mOnSomethingListener = new OnSomethingListener() { @Override onSomething() { doThatOtherThing(); } } protected void function2() { //uses mOnSomethingListener //however mOnSomethingListener is null when this function is called from super() //... } public Class2() { super(); } } I assume the listener is null because I am effectively referencing it from super()
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