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  • How to code a keyboard button to switch between 2 modes?

    - by le.shep20
    Hi! i'm doing a project, i'm not going to details but i will simplify my idea, i'm using Morse Code ( dot and dash) and i have 2 methods: convert_MorseToChar() and Convert_MorseTonum() in the convert_MorseToChar() method there is swich to compare the input from a user which will be Morse codes and mapping it to characters: private String convert_MorseToChar(ref string Ch) { switch (Ch) { Case ".-": MorsetoChar = "a" break; Case "-...": MorsetoChar = "b" break; Case "-.-.": MorsetoChar = "c" break; Case "-..": MorsetoChar = "d" break; Case ".": MorsetoChar = "e" break; } } and the other method Convert_MorseToNum(), ues the SAME combinations of Morse codes but mapping them to numbers: private String Convert_MorseToNum(ref string Ch) { switch (Ch) { Case ".-": MorsetoChar = "1" break; Case "-...": MorsetoChar = "2" break; Case "-.-.": MorsetoChar = "3" break; Case "-..": MorsetoChar = "4" break; Case ".": MorsetoChar = "5" break; } } now the senario is: there are 2 Textbox, one the user will write Morse codes in it and the other is for the output. The user will write dot "." and dash "-" from the keyboard and press Enter then the program will go to ONE of the 2 methods to convert the Morse codes. Now what tells the program where to go to convert?? my question is: I want to create mode key to swich between 2 modes: MorseTochar and MorseToNum. i want the down arrow key to act like a mode, when a user press the down arrow then it the program will be in MorseToChar mode, when ever the user input the program directly use the method convert_MorseToChar to convert to characters. and when the user press the down arrow agian, the prohram will swich to MorseToNum mode here when ever the user input as morsecode, the program will directly use the method Convert_MorseToNum() to convert to numbers. HOW I CAN DO THAT Pleaaaas!!! help me! Please excuse my English, English is not my native language :)

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  • Spring Security: Authentication returns null

    - by Mike
    Hi! I implemented FilterInvocationSecurityMetadataSource. in getAttribute, i am trying to extract the Authentication object to achieve the user and get his allowed views from the database:Object principal = SecurityContextHolder.getContext().getAuthentication().getPrincipal(); but the authentication is null! why? how can i achieve it?

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  • Using NHibernate to map a nChar column to an enumerated type

    - by Morrislgn
    Hello Folks, I am trying to map a table frp, a SQL Server 2005 DB to a class which contains an enum: public class MyClass{ private YesNoOptional addressSetting; public YesNoOptional AddressSetting{ {get; set;} } } public enum YesNoOptional { Yes, No, Optional } This will dictate that one of three values is inserted into the corresponding column - 'Y', 'N', 'O'. This column is of type nchar(1). My mapping file is like so (addressSetting is the property which is causing the problem): <class name="IncidentDefinition" table="IR_INCIDENT_DEF" lazy="false" > <id name="Guid" column="INT_GUID" > <generator class="guid"></generator> </id> <property name="Reference" column="INT_REF" ></property> <property name="Description" column="INT_DESCRIPTION" ></property> <property name="AddressSetting" column="INT_ADDRESS_REQ" ></property> <property name="Active" column="INT_ACTIVE" type="YesNo"></property> <property name="PinDocId" column="INT_PIN_DOC_ID"></property> </class> Using the config above I get the following error: NHibernate.ADOException: could not initialize a collection: System.FormatException: Input string was not in a correct format.. If I try to map the enum using a custom type like so: <property name="AddressSetting" column="INT_ADDRESS_REQ" type="ML.Types.YesNoOptional, ML.Types" ></property> Error: System.FormatException: Input string was not in a correct format. Next, if I try using a specific type like so: <property name="AddressSetting" column="INT_ADDRESS_REQ" type="String" ></property> This error is generated: NHibernate.PropertyAccessException: The type System.String can not be assigned to a property of type System.ArgumentException: Object of type 'System.String' cannot be converted to type 'ML.Types.YesNoOptional'.. As a last resort I tried to specify the type as a char like so: <property name="AddressSetting" column="INT_ADDRESS_REQ" type="Char" ></property> This works a bit better, as it in it doesnt throw an error, however instead of returning the character from the table and mapping it to the enumerated type the ASCII value of the character is returned instead - so Y is represented by 89! I am hoping someone can explain what I am doing wrong and\or how why this is happening please? Thanks Morris

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  • io operations in compilers

    - by Aastha
    How are constructs of io operations handled by a compiler? Like the RTL mapping for memory related operations which is done in a compiler at the time of target code generation, where and how exactly is the same done for io operations? How are the appeoaches different for processors supporting MMIO and I/O mapped I/O? Are there any optimizations done for the io operations in compilers?

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  • Unique Constraint Nhibernate.

    - by Will
    I have a object with a Nhibernate mapping that has a surrogate ID and a natual ID. Since of cource the natural ID is uniquely constrained a insert query will fail if the object is already in the database with the same natural ID. My solution for this has been to manually check to see if natural IDs are in the database before trying to insert. Is there a way to specify Nhibernate to do a select before insert on natural Id's/Unique Constraints?

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  • .net ViewState in page lifecycle

    - by caltrop
    I have a page containing a control called PhoneInfo.ascx. PhoneInfo is dynamically created using LoadControl() and then the initControl() function is called passing in an initialization object to set some initial textbox values within PhoneInfo. The user then changes these values and hits a submit button on the page which is wired up to the "submit_click" event. This event invokes the GetPhone() function within PhoneInfo. The returned value has all of the new user entered values except that the phoneId value (stored in ViewState and NOT edited by the user) always comes back as null. I believe that the viewstate is responsible for keeping track of user entered data across a postback, so I can't understand how the user values are coming back but not the explicitly set ViewState["PhoneId"] value! If I set the ViewState["PhoneId"] value in PhoneInfo's page_load event, it retrieves it correctly after the postback, but this isn't an option because I can only initialize that value when the page is ready to provide it. I'm sure I am just messing up the page lifecycle somehow, any suggestion or questions would really help! I have included a much simplified version of the actual code below. Containing page's codebehind protected void Page_Load(object sender, EventArgs e) { Phone phone = controlToBind as Phone; PhoneInfo phoneInfo = (PhoneInfo)LoadControl("phoneInfo.ascx"); //Create phoneInfo control phoneInfo.InitControl(phone); //use controlToBind to initialize the new control Controls.Add(phoneInfo); } protected void submit_click(object sender, EventArgs e) { Phone phone = phoneInfo.GetPhone(); } PhoneInfo.ascx codebehind protected void Page_Load(object sender, EventArgs e) { } public void InitControl(Phone phone) { if (phone != null) { ViewState["PhoneId"] = phone.Id; txt_areaCode.Text = SafeConvert.ToString(phone.AreaCode); txt_number.Text = SafeConvert.ToString(phone.Number); ddl_type.SelectedValue = SafeConvert.ToString((int)phone.Type); } } public Phone GetPhone() { Phone phone = new Phone(); if ((int)ViewState["PhoneId"] >= 0) phone.Id = (int)ViewState["PhoneId"]; phone.AreaCode = SafeConvert.ToInt(txt_areaCode.Text); phone.Number = SafeConvert.ToInt(txt_number.Text); phone.Type = (PhoneType)Enum.ToObject(typeof(PhoneType), SafeConvert.ToInt(ddl_type.SelectedValue)); return phone; } }

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  • Parsing a .NET DataSet returned from a .NET Web Service in Java

    - by Chris Dail
    I have to consume a .NET hosted web service from a Java application. Interoperability between the two is usually very good. The problem I'm running into is that the .NET application developer chose to expose data using the .NET DataSet object. There are lots of articles written as to why you should not do this and how it makes interoperability difficult: http://www.hanselman.com/blog/ReturningDataSetsFromWebServicesIsTheSpawnOfSatanAndRepresentsAllThatIsTrulyEvilInTheWorld.aspx http://www.lhotka.net/weblog/ThoughtsOnPassingDataSetObjectsViaWebServices.aspx http://aspnet.4guysfromrolla.com/articles/051805-1.aspx http://www.theserverside.net/tt/articles/showarticle.tss?id=Top5WSMistakes My problem is that despite this not being recommended practice, I am stuck with having to consume a web service returning a DataSet with Java. When you generate a proxy for something like this with anything other than .NET you basically end up with an object that looks like this: @XmlElement(namespace = "http://www.w3.org/2001/XMLSchema", required = true) protected Schema schema; @XmlAnyElement(lax = true) protected Object any; This first field is the actual schema that should describe the DataSet. When I process this using JAX-WS and JAXB in Java, it bring all of XS-Schema in as Java objects to be represented here. Walking the object tree of JAXB is possible but not pretty. The any field represents the raw XML for the DataSet that is in the schema specified by the schema. The structure of the dataset is pretty consistent but the data types do change. I need access to the type information and the schema does vary from call to call. I've though of a few options but none seem like 'good' options. Trying to generate Java objects from the schema using JAXB at runtime seems to be a bad idea. This would be way too slow since it would need to happen everytime. Brute force walk the schema tree using the JAXB objects that JAX-WS brought in. Maybe instead of using JAXB to parse the schema it would be easier to deal with it as XML and use XPath to try and find the type information I need. Are there other options I have not considered? Is there a Java library to parse DataSet objects easily? What have other people done who may have similar situations?

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  • Django database caching

    - by hekevintran
    The object user has a foreign key relationship to address. Is there a difference between samples 1 and 2? Does sample 1 run the query multiple times? Or is the address object cached? # Sample 1 country = user.address.country city = user.address.city state = user.address.state # Sample 2 address = user.address country = address.country city = address.city state = address.state

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  • After passing a reference to an method, any mods using that reference are not visible outside the me

    - by Jason
    I am passing the reference of name to *mod_name*, I modify the referenced object from within the method but the change is not visible outside of the method, if I am referring to the same object from all locations how come the value is different depending on where I reference it? name = "Jason" puts name.object_id #19827274 def mod_name(name) puts name.object_id #19827274 name = "JasonB" end puts name.object_id #19827274 puts name #Jason String might be a bad example, but I get the same result even if I use a Fixnum.

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  • Serializing data from a RSS feed in ASP.NET/C#

    - by DotnetDude
    I'd like the user to specify a RSS feed address and serialize the information from it. I am not interested in the XML format, but populate a strongly typed object from the XML. My question is, is there a standard that all RSS feeds support (Do all of them have date, title etc)? If so, is there a XSD that describes this. If not, how do I handle serializing a RSS feed to an object in ASP.NET?

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  • java.lang.VerifyError during ejb method call

    - by Bastien
    Hi, When I try to call a method from a local ejb I have this error : java.lang.VerifyError: com/pwc/lu/ejb/hcfollowup/staff/HCFStaffManagerLocal.getPersonById(Ljava/lang/Integer;)Lcom/pwc/lu/mapping/hcfollowup/hibernate/global/Person; HCFStaffManagerLocal is my local interface and getPersonById an ejb method. Person, the result type. I can get my ejb but error occurs when trying to call getPersonById method. I don't understand why it get an exception for Person class... Any ideas ?

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  • Difference between generator expression and generator function

    - by Neil G
    Is there any difference — performance or otherwise — between generator expressions and generator functions? In [1]: def f(): ...: yield from range(4) ...: In [2]: def g(): ...: return (i for i in range(4)) ...: In [3]: f() Out[3]: <generator object f at 0x109902550> In [4]: list(f()) Out[4]: [0, 1, 2, 3] In [5]: list(g()) Out[5]: [0, 1, 2, 3] In [6]: g() Out[6]: <generator object <genexpr> at 0x1099056e0>

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  • ASP.Net JSON Web Service Post Form Data

    - by Will D
    I have a ASP.NET web service decorated with System.Web.Script.Services.ScriptService() so it can return json formatted data. This much is working for me, but ASP.Net has a requirement that parameters to the web service must be in json in order to get json out. I'm using jquery to run my ajax calls and there doesn't seem to be an easy way to create a nice javascript object from the form elements. I have looked at serialiseArray in the json2 library but it doesn't encode the field names as property name in the object. If you have 2 form elements like this <input type="text" name="namefirst" id="namefirst" value="John"/> <input type="text" name="namelast" id="namelast" value="Doe"/> calling $("form").serialize() will get you the standard query string namefirst=John&namelast=Doe calling JSON.stringify($("form").serializeArray()) will get you the (bulky) json representation [{"name":"namefirst","value":"John"},{"name":"namelast","value":"Doe"}] This will work when passing to the web service but its ugly as you have to have code like this to read it in: Public Class NameValuePair Public name As String Public value As String End Class <WebMethod()> _ Public Function GetQuote(ByVal nvp As NameValuePair()) As String End Function You would also have to wrap that json text inside another object nameed nvp to make the web service happy. Then its more work as all you have is an array of NameValuePair when you want an associative array. I might be kidding myself but i imagined something more elegant when i started this project - more like this Public Class Person Public namefirst As String Public namelast As String End Class which would require the json to look something like this: {"namefirst":"John","namelast":"Doe"} Is there an easy way to do this? Obviously it is simple for a form with two parameters but when you have a very large form concatenating strings gets ugly. Having nested objects would also complicate things The cludge I have settled on for the moment is to use the standard name value pair format stuffed inside a json object. This is compact and fast {"q":"namefirst=John&namelast=Doe"} then have a web method like this on the server that parses the query string into an associate array. <WebMethod()> _ Public Function AjaxForm(ByVal q As String) as string Dim params As NameValueCollection = HttpUtility.ParseQueryString(q) 'do stuff return "Hello" End Sub As far a cludges go this one seems reasonably elegant in terms of amount of code, but my question is: is there a better way? Is there a generally accepted way of passing form data to asp.net web/script services?

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  • NHibernate - Retrieve specific columns and count using criteria querie

    - by Cristian Sapino
    This is my mapping file: This is the other with joined-subclass class name="CRMStradCommon.Entities.ContactoEntity,CRMStradCommon" table="contacto" dynamic-update="true" Haw can I make this query with Criteria? SELECT contacto.id, contacto.nombre, persona.apellido, COUNT(*) AS Cant FROM contacto INNER JOIN oportunidad ON contacto.id = oportunidad.dueno LEFT OUTER JOIN persona ON contacto.id = persona.id LEFT OUTER JOIN empresa ON contacto.id = empresa.id GROUP BY contacto.id, contacto.nombre, persona.apellido ORDER BY contacto.nombre, persona.apellido Thanks a lot!

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  • about sending messages among bg.html, popup.html and contentscript.js

    - by T_t
    Hi!:) In my extension, when a button named "mybutton1" in the popup.html is clicked, it sends a message "getvar1" to the contentscript.js, then the contentscript.js sends a message "i want var1" to the background.html to get an object named "var1".If the button named "mybutton2" is clicked, the contentscript.js gets the "var2" object. How should i do under this condition? What's more, i am a little confused about the chrome.extension.onRequest.addListener method and chrome.extension.sendRequest method.Could someone tell me the mechanism of the two methods? Thanks!

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  • Setting fonts in a JTextArea

    - by vuj
    I've got a JTextArea which has the following text "Text1 Text2 Text3". Is there a way I can make all of them different fonts? E.g. "Text1" is bold, "Text2" is italic and "Text3" is normal? I know I can create a Font object, however I can only apply it the JTextArea object. Thanks.

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  • EnvDTE Retrieving the data type from a CodeElement

    - by chrischu
    I am using EnvDTE to generate some code in my latest project. I have a reference to a CodeClass-Object for a given C#-Class but now I wanted to loop through all of its members (in codeClass.Members) and check their types. However I can't manage to retrieve the type of the given member from the CodeElement-Object that I get when looping through codeClass.Members. How can I retrieve the type (int, string etc.)? PS: Reflection is not an option for my usecase.

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  • input type="text" not clickable in a jcarousel (jQuery based carousel) element

    - by AkaiKen
    Hello ! I work on a website where almost all objects are in a jCarousel element : <div> <ul id="mycarousel"> <li>object 1</li> <li>object 2</li> </ul> </div> is the "written" code, and : <div class=" jcarousel-skin-tango"> <div class="jcarousel-container jcarousel-container-horizontal" style="display: block;"> <div class="jcarousel-prev jcarousel-prev-horizontal jcarousel-prev-disabled jcarousel-prev-disabled-horizontal" style="display: block;" disabled="true"></div> <div class="jcarousel-next jcarousel-next-horizontal" style="display: block;" disabled="false"></div> <div class="jcarousel-clip jcarousel-clip-horizontal"> <ul class=" jcarousel-list jcarousel-list-horizontal" id="mycarousel" style="width: 2853px; left: 0px;"> <li class="jcarousel-item jcarousel-item-horizontal jcarousel-item-1 jcarousel-item-1-horizontal" jcarouselindex="1" style="width: 307px;"> object 1 </li> <li class="jcarousel-item jcarousel-item-horizontal jcarousel-item-1 jcarousel-item-1-horizontal" jcarouselindex="1" style="width: 307px;"> object 2 </li> </ul> </div> </div> is the generated code (here it lacks the ultimate </div>, maybe a number of rows limitation ?). I'm sorry I can't provide a link, I work on a local server currently. It works perfectly =) but... my problem is : an <input type="text" /> won't be clickable in this environment. I tried the others type of input, radio, checkbox, file : works. But text does not. I can specify a value on my input (it's its purpose on my work : a search in a database for datas to be modified and reinjected in database). In fact, I can access to the text input by clicking-right in then left. But it's pretty 'unergonomic', and in my project it's unthinkable. Ah, and I tried to style this input with a style="z-index:1000;", no changes, I think it's not a CSS problem. Does anybody have an idea ? Thank you very much in advance.

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  • Pointer-Safe Objects?

    - by cam
    Would it be smart to have a vector in an object with a list of pointers that point to it? This way when the object is deleted, it could delete all the pointers pointing to it to prevent a null-pointer exception?

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  • How to delete a user in MSCRM 4.0

    - by Chris Richner
    Do you know of a way to get rid of CRM User accounts in MSCRM 4.0? After some user accounts have been deleted in AD we're faced a lot of issues while importing the organisation to another server stating that there are issues with the user mapping. What kind of idea is behind the fact that no user accounts can be deleted from the crm installation? Is there any tool or undocumented Webservice API call to get rid of crm users? Thanks for sharing yours insights

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  • What IDE should I use to programm CPP on linux

    - by Itay Moav
    I need to start doing CPP (after 12 years) and do it on Ubuntu. What good IDEs are out there? Properties I look for in an IDE: project managment able to build project auto completion object browser+navigation (you click on an object/function name, and the ide sends you to the declaration) Any recommendations?

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  • How to create a 2D map in Java?

    - by Roman
    I would like to have a mapping which maps two string into one string. For example: map["MainServer","Status"] return "active". What is the best way to do it in Java. Should I use HashMap which include another HashMap as its elements?

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  • Why can't I find `len(list)` in Python?

    - by FarmBoy
    I'm new to Python. I have a method that begins: def foo(self, list): length = len(list) I've called len() successfully in other cases, but here I get: TypeError: object of type 'type' has no len() How do I convince Python that this object passed in is a list? What am I missing?

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