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  • .NET converting simple arrays to List Generics

    - by Manish Sinha
    This question might seem trivial and also stupid at the first glance, but it is much more than this. I have an array of any type T (T[]) and I want to convert it into a List generic (List<T>). Is there any other way apart from creating a Generic list, traversing the whole array and adding the element in the List? Present Situation: string[] strList = {'foo','bar','meh'}; List<string> listOfStr = new List<string>(); foreach(string s in strList) { listOfStr.Add(s); } My ideal situation: string[] strList = {'foo','bar','meh'}; List<string> listOfStr = strList.ToList<string>(); Or: string[] strList = {'foo','bar','meh'}; List<string> listOfStr = new List<string>(strList); I am suggesting the last 2 method names as I think compiler or CLR can perform some optimizations on the whole operations if It want inbuilt. P.S.: I am not talking about the Array or ArrayList Type

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  • WPF binding only inside XAML (simple question)

    - by 0xDEAD BEEF
    Why this works <myToolTip:UserControl1> <TextBlock Text="{Binding Path=TestString, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type myToolTip:UserControl1}}}"/> </myToolTip:UserControl1> BUT this does not <myToolTip:UserControl1 x:Name="userControl"> <TextBlock Text="{Binding Path=TestString, ElementName=userControl}"/> </myToolTip:UserControl1> and is there realy no shorter (faster) fay, to acces usercontrols elements?! Sincerely, 0xDEAD BEEF

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  • Extjs - Dynamically generate fields in a FormPanel

    - by Benjamin
    Hi all, I've got a script that generates a form panel: var form = new Ext.FormPanel({ id: 'form-exploit-zombie-'+zombie_ip, formId: 'form-exploit-zombie-'+zombie_ip, border: false, labelWidth: 75, formBind: true, defaultType: 'textfield', url: '/ui/modules/exploit/new', autoHeight: true, buttons:[{ text: 'Execute exploit', handler: function() { var form = Ext.getCmp('form-exploit-zombie-'+zombie_ip); form.getForm().submit({ waitMsg: 'Running exploit ...', success: function() { Ext.beef.msg('Yeh!', 'Exploit sent to the zombie.') }, failure: function() { Ext.beef.msg('Ehhh!', 'An error occured while trying to send the exploit.') } }); } }] }); that same scripts then retrieves a json file from my server which defines how many input fields that form should contain. The script then adds those fields to the form: Ext.each(inputs, function(input) { var input_name; var input_type = 'TextField'; var input_definition = new Array(); if(typeof input == 'string') { input_name = input; var field = new Ext.form.TextField({ id: 'form-zombie-'+zombie_ip+'-field-'+input_name, fieldLabel: input_name, name: 'txt_'+input_name, width: 175, allowBlank:false }); form.add(field); } else if(typeof input == 'object') { //input_name = array_key(input); for(definition in input) { if(typeof definition == 'string') { } } } else { return; } }); Finally, the form is added to the appropriate panel in my interface: panel.add(form); panel.doLayout(); The problem I have is: when I submit the form by clicking on the button, the http request sent to my server does not contain the fields added to the form. In other words, I'm not posting those fields to the server. Anyone knows why and how I could fix that? Thanks for your time.

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  • Help improving a simple assembly function

    - by MPelletier
    I just handed in this function in an assignment. It is done (hence no homework tag). But I would like to see how this can be improved. Essentially, the function sums the squares of all the integers between 1 and the given number, using the following formula: n(n+1)(2n+1)/6 Where n is the maximum number. The function below is made to catch any overflow and return 0 should any occur. UInt32 sumSquares(const UInt32 number) { int result = 0; __asm { mov eax, number //move number in eax mov edx, 2 //move 2 in edx mul edx //multiply (2n) jo end //jump to end if overflow add eax, 1 //addition (2n+1) jo end //jump to end if overflow mov ecx, eax //move (2n+1) in ecx mov ebx, number //move number in ebx add ebx, 1 //addition (n+1) jo end //jump to end if overflow mov eax, number //move number in eax for multiplication mul ebx //multiply n(n+1) jo end //jump to end if overflow mul ecx //multiply n(n+1)(2n+1) jo end //jump to end if overflow mov ebx, 6 //move 6 in ebx div ebx //divide by 6, the result will be in eax mov result, eax //move eax in result end: } return result; } Basically, I want to know what I can improve in there. In terms of best-practices mostly. One thing sounds obvious: smarter overflow check (with a single check for whatever maximum input would cause an overflow).

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  • How can i handle a form submit using REAL OOP in PHP

    - by Lorence
    Im used to java and creating UML.. and i was wondering how can PHP be OOP, the objects live only until you make a request.. then they destroy, so if im using a database is useless to create a class and add the members (variables) to the class, they will be useless.. i cant pass the main system object from one page to another, or similar so how can PHP be compare to jave? you never do OOP .. i mean REAL OOP.. not creating classes , in fact your index will be a procedural file with some object instance and then ? how about if i make a html form and i want to submit the data.. i have to call a file which is not a class is a php procedural file were i grab the submited data with POST, from that file you will instance a class and do some logic there.. but for me thats not pure OOP.. can somebody point me to the right way of OOP using a form submit example ? Thanks!

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  • What is the most simple implementation of IDynamicMetaObjectProvider?

    - by Néstor Sánchez A.
    Hi, I have this scenario... 1.- I'm providing a "Dynamic Table" for wich users can define Fields. Each Dynamic Table will have as many rows/records as needed, but the Field definitions are centralized. 2.- My Dynamic Row/Record class was inherited from the .NET DLR DynamicObject class, and the underlying storage was a List appropriately associated to the defining fields. Everything works fine! BUT... 3.- Because I need to Serialize the content, and DynamicObject is not Serializable, I was forced to generate and carry a Dynamic Object when dynamic member access is required. But this is ugly and redundant. So, I need to implement IDynamicMetaObjectProvider myself to achieve dynamic access and serialization together. After googling/binging unsuccessfully I ask for your help... Can anybody please give a good example (or related link) for doing that?

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  • Antlr question: cannot get Antlr tool to compile simple file from ANTLRWorks

    - by Don Henton
    Here is the grammar file: grammar fred; test : 'fred'; Here is the batch file to launch the tool: SET JAVA_HOME=C:\Program Files\Java\jdk1.6.0_24 SET PATH=%PATH%;%JAVA_HOME%\bin SET ANTLR_HOME=c:/users/don/workspace/antlrAssign/lib/ java -cp %ANTLR_HOME%/antlr-3.3-complete.jar antlr.Tool fred.g Here's the result: ANTLR Parser Generator Version 2.7.7 (20060906) 1989-2005 fred.g:1:1: unexpected token: grammar error: Token stream error reading grammar(s): fred.g:3:19: expecting ''', found 'r' fred.g:1:1: rule grammar trapped: fred.g:1:1: unexpected token: grammar TokenStreamException: expecting ''', found 'r' Prior postings refer to "org.antlr.Tool" but the 3.3 jar has it located as above. The idea was to create a debug version of a tree parser, and according to the documentation, you have to use the command line tool. Has anyone seen this before? Am I nuts? It's two lines long and its dying on the first word in the file. Of course this compiles in antlrworks. Any help appreciated, I can't afford any more adjustments to my medications.

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  • Draw simple circle in XNA

    - by George Johnston
    I want to draw a 2d, filled, circle. I've looked everywhere and cannot seem to find anything that will even remotely help me draw a circle. I simply want to specify a height and width and location on my canvas. Anyone know how? Thanks!

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  • Prolog : Simple question

    - by abduls85
    I want to add any strings user entered into a list run :- write('How many students you have: '),read(x),nl. enterNameOfStudents(x). enterNameOfStudents(x) :- for(A, 1, x, 1),write('Please enter the names of students'),read(A),??????,nl,fail. What do i put in the ?????? portion to ensure that whatever the user enter will go into a user-defined list which will be used for further processing later ? Please help. I have tried numerous stuff like append and other but it does not work :(

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  • Simple Data Caching using Weak References in WCF

    - by Tawani
    Given that I have the following WCF service: class LookUpService { public List<County> GetCounties(string state) { var db = new LookUpRepository(); return db.GetCounties(state); } } class County { public string StateCode{get;set;} public string CountyName{get;set;} public int CountyCode{get;set;} } What will be the most efficient (or best) way to cache a state's counties using weak references (or any other approach) so that we don't hit the database every time we need to look up data. Note that we will not have access to the HttpRuntime (and HttpContext).

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  • How to print data form C#

    - by Hybryd
    I've searched Stackoverflow and google and found many ways how I can print stuff in C#. The best way for me would be to populate blank white windows form with some label, textbox and picturebox elements and print it as a windows form. This way is very poor because it prints in 72 DPI, and is not flexible for multiple pages print. Next way that I found that would be good is using iTextSharp, but there is a problem that iTextSharp only generates PDF-s, and you have to open it in PDF viewer and print from there. I love this way of thinking where I create a paragraph, and then fill it with text and graphic, so I found this thread http://www.devarticles.com/c/a/C-Sharp/Printing-Using-C-sharp/ where it discusses how to create your own printing engine in C#, something like iTextSharp, but very lightweight... Now that I've said that, I want to know is there any ready to use printing engine that would be like iTextSharp, made for printing, not for PDF generation? What is the best way to print something, without using reporting services like CrystalReports. I think Crystal Reports wouldn't work for my case cause I don't want to print generic reports, but some text and graphics that I need to dynamicaly generate every time I need to print.

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  • C# mvc2 client side form validation with xval, prevent post

    - by Rob
    I'm using xval to use client side validation in my asp.net mvc2 webapplication. Despite the errors it's giving when i enter text in a nummeric field it still tries to post the form to the database. The incorrect values are being replaced by 0 and saved to the database. But instead it shouldn't even be possible to try and submit the form. Can anyone help me out here? I've set the attributes as below; [Property] [ShowColumnInCrud(true, label = "FromPriceInCents")] [Required] //[Range(1, Int32.MaxValue)] public virtual Int32 FromPriceInCents{ get; set; } The controller catching the request looks as below; I'm getting no errors in this part. [AcceptVerbs(HttpVerbs.Post)] [Transaction] [ValidateInput(false)] public override ActionResult Create() { //some foo happens } My view looks like below; <div class="label"><label for="Price">FromPrice</label></div> <div class="field"> <%= Html.TextBox("FromPriceInCents")%> <%= Html.ValidationMessage("product.FromPriceInCents")%></div> And at the end of the view i have the following rule which in html code generates the correct validation rules <%= Html.ClientSideValidation<Product>("Product") %> I hope someone can helps me out with this issue, thanks in advance!

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  • Simple RSS parser for Android

    - by Andrioid
    Hello, I am trying to create my first Android application and I'm not all that experienced with Java development. In short, the application needs to do the following: On click, fetch a RSS feed online Parse it for data Show the data I've been browsing for guides, tutorials and documentation but the parsers I've found so far only deal with local strings or files or are way too complicated for me to go through at this point. Can you provide me a link to a good XML parser class (that is included in the Android SDK) Provide me with an example of its use. An example of how the feed would get fetched from the Internet (curl? or something internal?) (Bonus) Tips and hints on how this would be best achieved. Thanks in advance.

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  • Help transcoding simple jQuery to mootools

    - by Moak
    $(".container").hover( function(){ $(".child-1").hide(0); $(".child-2").show(0); },function(){ $(".child-1").show(0); $(".child-2").hide(0); }); A project I have requires that I use mootools, but I never used mootools, and jquery makes much more sense to me. Can someone show me how this example would look like in mootools? thanks

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  • WPF Beginner - A simple XAML layout not working as expected

    - by OrWhen
    Hi, I've just started learning WPF, and followed a book to make this sample calculator application in XAML. The XAML code is attached below. I don't have any UI specific code in the xaml.cs file. However, I'm seeing a difference between design time and runtime. As you can see in the attached screenshot, the upper left button of the calculator is bigger than the rest. Even more confusingly, the designer when I edit the XAML shows the button correctly. I've tried to determine why is that, and I'm stumped. Can anyone help? I'm using VS2008, targeting framework 3.5, if it's any help. Here's the XAML: <TextBlock Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="4" FontSize="24" Name="Header" VerticalAlignment="Center" HorizontalAlignment="Center">Calculator</TextBlock> <TextBox Grid.ColumnSpan="4" Grid.Column="0" Grid.Row="1" Name="Display" HorizontalContentAlignment="Left" Margin="5" /> <Button Grid.Row="2" Grid.Column="0" Click="Button_Click">7</Button> <Button Grid.Row="2" Grid.Column="1" Click="Button_Click">8</Button> <Button Grid.Row="2" Grid.Column="2" Click="Button_Click">9</Button> <Button Grid.Row="3" Grid.Column="0" Click="Button_Click">4</Button> <Button Grid.Row="3" Grid.Column="1" Click="Button_Click">5</Button> <Button Grid.Column="2" Grid.Row="3" Click="Button_Click">6</Button> <Button Grid.Row="4" Grid.Column="0" Click="Button_Click">1</Button> <Button Grid.Row="4" Grid.Column="1" Click="Button_Click">2</Button> <Button Grid.Row="4" Grid.Column="2" Click="Button_Click">3</Button> <Button Grid.Row="5" Grid.Column="0" Click="Button_Click">0</Button> <Button Grid.Row="5" Grid.Column="3" Tag="{x:Static local:Operation.PLUS}" Click="Op_Click">+</Button> <Button Grid.Row="4" Grid.Column="3" Tag="{x:Static local:Operation.MINUS}" Click="Op_Click">-</Button> <Button Grid.Row="3" Grid.Column="3" Tag="{x:Static local:Operation.TIMES}" Click="Op_Click">*</Button> <Button Grid.Row="2" Grid.Column="3" Tag="{x:Static local:Operation.DIVIDE}" Click="Op_Click">/</Button> <Button Grid.Row="5" Grid.Column="1" >.</Button> <Button Grid.Row="5" Grid.Column="2" Tag="{x:Static local:Operation.EQUALS}" Click="Op_Click">=</Button> </Grid>

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  • Submitting a multidimensional array via POST with php

    - by Fireflight
    I have a php form that has a known number of columns (ex. top diameter, bottom diameter, fabric, colour, quantity), but has an unknown number of rows, as users can add rows as they need. I've discovered how to take each of the fields(columns) and place them into an array of their own. <input name="topdiameter['+current+']" type="text" id="topdiameter'+current+'" size="5" /> <input name="bottomdiameter['+current+']" type="text" id="bottomdiameter'+current+'" size="5" /> So what I end up with in the HTML is: <tr> <td><input name="topdiameter[0]" type="text" id="topdiameter0" size="5" /></td> <td><input name="bottomdiameter[0]" type="text" id="bottomdiameter0" size="5" /></td> </tr> <tr> <td><input name="topdiameter[1]" type="text" id="topdiameter0" size="5" /></td> <td><input name="bottomdiameter[1]" type="text" id="bottomdiameter0" size="5" /></td> </tr> ...and so on. What I would like to do now is take all the rows and columns put them into a multidimensional array and email the contents of that to the client (preferably in a nicely formatted table). I haven't been able to really comprehend how to combine all those inputs and selects into a nice array. At this point, I'm going to have to try to use several 1D arrays, although I have the idea that using a single 2D array would be a better practice than using several 1D arrays.

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  • Spring Security: Multiple Logins to the same resources: Form Login + Facebook Connect (uid, sessionK

    - by Daxon
    To begin I know about http://blog.kadirpekel.com/2009/11/09/facebook-connect-integration-with-spring-security/ The only problem is that it completely replaces the Form Login with Facebook Connect. I have the native form login in place, I also have Facebook Connect in place, Upon gathering user information I link it to a native account but without a password. At that point I would like to call a link or method to start process of going into the Spring Security Filter Chain. Here is the source code that works, but am trying to modify. It contains all the files I'm taking about. Now from what I understand I need to add a custom FacebookAuthenticationProvider so that my AuthenticationManager knows about it. <bean id="facebookAuthenticationProvider" class="org.springframework.security.facebook.FacebookAuthenticationProvider"> </bean> <security:authentication-manager alias="authenticationManager"> <security:authentication-provider ref="facebookAuthenticationProvider" /> </security:authentication-manager> Then within the FacebookAuthenticationProvider I would have to call an FacebookAuthenticationToken that would take my the current facebook Uid and SessionKey of the user. Then try authenticate this Token. So where does the FacebookAuthenticationFilter come into it? I'm just trying to understand the order at which these 3 files are called. As if you were trying to implement any other custom authentication. FacebookAuthenticationFilter.java FacebookAuthenticationProvider.java FacebookAuthenticationToken.java I have also posted this on the Spring Security Forum

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  • Very simple regex not working

    - by Thomas Wanner
    I have read that to match a word inside of a string using Regular expressions (in .NET), I can use the word boundary specifier (\b) within the regex. However, none of these calls result in any matches Regex.Match("INSERT INTO TEST(Col1,Col2) VALUES(@p1,@p2)", "\b@p1\b"); Regex.Match("INSERT INTO TEST(Col1,Col2) VALUES(@p1,@p2)", "\bINSERT\b"); Is there anything I am doing wrong ?

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  • Simple LINQ Aggregate Query

    - by Steven
    What is the vb.net equivalent of the following psuedo-code using LINQ? select min(credits) minCredits, max(credits) maxCredits, min(dollars) minDollars, max(dollars) maxDollars from players minCredits_lbl.Text = minCredits ... maxDollars_lbl.Text = maxDollars I have the following, but I can't figure out how to get any further. Dim query = From row in myDataSet.Tables("Players") _ Select credits = row("credits"), dollars = row("dollars")

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  • Simple question - XSB Prolog

    - by KP65
    Hello! I'm diving into the world of prolog headfirst but I seem to have hit shallow water! I'm looking at database manipulation in prolog with regards to this tutorial:Learn Prolog Now! It states that I can see my database by entering listing So i tried it and it should basically output everything in my .P file(facts, rules), but this is what i get, here are my sequence of commands: ? consult('D:\Prolog\testfile.P'). [testfile.P loaded] ? listing. library_directory(C:blahblahpathtoXSB) library_directory(C:blahblahXSBpath) {this is listed around 5 times)} shouldn't this command display what is in testfile.P, according to the tutorial? also, after consult testfile.P i should be ableto use assert to add more facts but it doesnt actually change anything in the testfile.P..? any ideas

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  • SIMPLE OpenSSL RSA Encryption in C/C++ is causing me headaches

    - by Josh
    Hey guys, I'm having some trouble figuring out how to do this. Basically I just want a client and server to be able to send each other encrypted messages. This is going to be incredibly insecure because I'm trying to figure this all out so I might as well start at the ground floor. So far I've got all the keys working but encryption/decryption is giving me hell. I'll start by saying I am using C++ but most of these functions require C strings so whatever I'm doing may be causing problems. Note that on the client side I receive the following error in regards to decryption. error:04065072:rsa routines:RSA_EAY_PRIVATE_DECRYPT:padding check failed I don't really understand how padding works so I don't know how to fix it. Anywho here are the relevant variables on each side followed by the code. Client: RSA *myKey; // Loaded with private key // The below will hold the decrypted message unsigned char* decrypted = (unsigned char*) malloc(RSA_size(myKey)); /* The below holds the encrypted string received over the network. Originally held in a C-string but C strings never work for me and scare me so I put it in a C++ string */ string encrypted; // The reinterpret_cast line was to get rid of an error message. // Maybe the cause of one of my problems? if(RSA_private_decrypt(sizeof(encrypted.c_str()), reinterpret_cast<const unsigned char*>(encrypted.c_str()), decrypted, myKey, RSA_PKCS1_OAEP_PADDING)==-1) { cout << "Private decryption failed" << endl; ERR_error_string(ERR_peek_last_error(), errBuf); printf("Error: %s\n", errBuf); free(decrypted); exit(1); } Server: RSA *pkey; // Holds the client's public key string key; // Holds a session key I want to encrypt and send //The below will hold the encrypted message unsigned char *encrypted = (unsigned char*)malloc(RSA_size(pkey)); // The reinterpret_cast line was to get rid of an error message. // Maybe the cause of one of my problems? if(RSA_public_encrypt(sizeof(key.c_str()), reinterpret_cast<const unsigned char*>(key.c_str()), encrypted, pkey, RSA_PKCS1_OAEP_PADDING)==-1) { cout << "Public encryption failed" << endl; ERR_error_string(ERR_peek_last_error(), errBuf); printf("Error: %s\n", errBuf); free(encrypted); exit(1); } Let me once again state, in case I didn't before, that I know my code sucks but I'm just trying to establish a framework for understanding this. I'm sorry if this offends you veteran coders. Thanks in advance for any help you guys can provide!

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  • Simple Program Question (TI-84 calculator)

    - by John
    I wrote a program (on my TI-84 calculator) to satisfy the following exercise: Write a program that will print all solutions of the inequality ax + b < c, where a, b, and c are entered by the user. In this program the domain of x will be a set of consecutive integers, where the smallest and largest members of the set will also be entered by the user. (Hint: Use a FOR . . . NEXT loop to test each integer from smallest to largest.) This is the code I have: :Input "A=",A :Input "B=",B :Input "C=",C :Disp "DOMAIN FOR X" :Input "MIN=",D :Input "MAX=",E :For(X,D,E,1) :If AX+B<C :Disp X :End I sort of figured it out by chance; I don't really know how 'If' works inside 'For.' I wanted to have it tell me if there is no solution, though, so I tried: :Input "A=",A :Input "B=",B :Input "C=",C :Disp "DOMAIN FOR X" :Input "MIN=",D :Input "MAX=",E :For(X,D,E,1) :If AX+B<C :Then :Disp X :Else :Disp "NO SOLUTION" :End But this returns the value for "MIN=" Why is this? Can anyone help me understand these work?

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