parameter-passing | 易学教程

How to access property of one managed bean in another managed bean

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问题 I have a managed bean (SessionScope as follow) @ManagedBean(name="login") @SessionScoped public class Login implements Serializable { private String userSession; public Login(){ } } In this managedbean, somewhere in the login function, i store the email as a session. I have another managed bean called ChangePassword (ViewScoped). I need to access the value of the email which is stored in the userSession. The reason of doing so is that i need to find out the current userSession(email) before i

MSAccess 2003 - VBA for passing a value from one form to another

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问题 So how can I pass a value from one form to another? For example: The user select's an organization from a list and this opens up a trip form that allows a user to enter various information regarding the trip. At one place I would like to add another little pop up form where they can enter contact information (just a name and phone for POC) of the organization they are visiting. So when that initial form opened from the selection screen it has two IDs that are simply hidden in text boxes (one

Passing functions as parameters in Swift

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I have the following function working as I expect, in iOS 8: func showConfirmBox(msg:String, title:String, firstBtnStr:String, secondBtnStr:String, caller:UIViewController) { let userPopUp = UIAlertController(title:title, message:msg, preferredStyle:UIAlertControllerStyle.Alert) userPopUp.addAction(UIAlertAction(title:firstBtnStr, style:UIAlertActionStyle.Default, handler:{action in})) userPopUp.addAction(UIAlertAction(title:secondBtnStr, style:UIAlertActionStyle.Default, handler:{action in})) caller.presentViewController(userPopUp, animated: true, completion: nil) } I would like to make

Detect if parameter passed is an array? Javascript [duplicate]

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问题 This question already has answers here : Closed 8 years ago . Possible Duplicate: How to detect if a variable is an array I have a simple question: How do I detect if a parameter passed to my javascript function is an array? I don't believe that I can test: if (typeof paramThatCouldBeArray == 'array') So is it possible? How would I do it? Thanks in advance. 回答1: if (param instanceof Array) ... Edit. As of 2016, there is a ready-built method that catches more corner cases, Array.isArray, used

How do I pass smart pointers into functions?

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问题 When passing objects into functions, do the same rules apply to smart pointers as to other objects that contain dynamic memory? When I pass, for example, a std::vector<std::string> into a function I always consider the following options: I'm going to change the state of the vector object, but I do not want those changes reflected after the function has finished, AKA make a copy. void function(std::vector<std::string> vec); I'm going to change the state of the vector object, and I do want

jQuery Passing $(this) to a Function

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问题 I have lines of code like this: $(this).parent().parent().children().each(function(){ // do something }); It works well. But I need to run these lines multiple times. So I have created a function and pass $(this) parameter to a function: myFunc( $(this) ); function myFunc(thisObj) { thisObj.parent().parent().children().each(function(){ // do something }); } But in this way, It didn't work. 回答1: you can check this link. http://jsfiddle.net/zEXrq/38/ $("#f").click(function() { myFunc($(this));

How to access property of one managed bean in another managed bean

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I have a managed bean (SessionScope as follow) @ManagedBean(name="login") @SessionScoped public class Login implements Serializable { private String userSession; public Login(){ } } In this managedbean, somewhere in the login function, i store the email as a session. I have another managed bean called ChangePassword (ViewScoped). I need to access the value of the email which is stored in the userSession. The reason of doing so is that i need to find out the current userSession(email) before i can complete the change password function. (Need change password for that specific email) How do i do

REST GET verb with parameters

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I'm sitting reading on some REST with my fellow teammates, we are writing a RoR application that is going to expose some of its functionality to the rest of the world. My task on this team is to make a ressource that exposes journal reports. If you call http://root.com/journalreports You should get all the journalreports from the service. Thats working like a charm, but I'm confused on how to properly make a ressource that exposes a range of journalreports. Should I make it http://root.com/journalreports?range=1/2/2010;5/2/2010 Or is this illegal when we talk about REST because of the ?range=

How to pass needed parameters to script in Powershell ISE?

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See Title. I specified needed parameters in the head of a script: param ($G_ARCHIVE = $(throw "Need file to upload!"), $G_LOGFILE = $(throw "Need logfile!")) When I want to debug the script with Powershell ISE: how can I fill these parameters? Use the command pane. Open the script file in the ISE editor, set the breakpoints (F9). Then in the command pane type a command invoking this script with required parameters. I do not think there is another (built-in) way of doing this in ISE. Ashraf Alam Open the script (myscript.ps1) in Windows Powershell ISE Press F9 at the variable you want to

Output of a c code like with call by reference [closed]

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问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 6 years ago . Given this C code: int x=12,y=10; void tswap(int pa, int pb) { int tmp; tmp=pa; pa=pb; pb=tmp; x=x+pa; x=x-pb; y++; printf("%d %d %d %d\n",pa,pb,x,y); }