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• Rewriting a statement using LINQ(C#)

  - by Thinking

  Is it possible to write the folowing using lambda(C#) private static void GetRecordList(List<CustomerInfo> lstCustinfo) { for (int i = 1; i <= 5; i++) { if (i % 2 == 0) lstCustinfo.Add(new CustomerInfo { CountryCode = "USA", CustomerAddress = "US Address" + i.ToString(), CustomerName = "US Customer Name" + i.ToString(), ForeignAmount = i * 50 }); else lstCustinfo.Add(new CustomerInfo { CountryCode = "UK", CustomerAddress = "UK Address" + i.ToString(), CustomerName = "UK Customer Name" + i.ToString(), ForeignAmount = i * 80 }); } }

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• C# Strange Behavior

  - by Betamoo

  I have a custom struct : struct A { public int y; } a custom class with empty constuctor: class B { public A a; public B() { } } and here is the main: static void Main(string[] args) { B b = new B(); b.a.y = 5;//No runtime errors! Console.WriteLine(b.a.y); } When I run the above program, it does not give me any errors, although I did not initialize struct A in class B constructor..'a=new A();'

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• hash table with chaining method program freezing

  - by Justin Carrey

  I am implementing hash table in C using linked list chaining method. The program compiles but when inserting a string in hash table, the program freezes and gets stuck. The program is below: struct llist{ char *s; struct llist *next; }; struct llist *a[100]; void hinsert(char *str){ int strint, hashinp; strint = 0; hashinp = 0; while(*str){ strint = strint+(*str); } hashinp = (strint%100); if(a[hashinp] == NULL){ struct llist *node; node = (struct llist *)malloc(sizeof(struct llist)); node->s = str; node->next = NULL; a[hashinp] = node; } else{ struct llist *node, *ptr; node = (struct llist *)malloc(sizeof(struct llist)); node->s = str; node->next = NULL; ptr = a[hashinp]; while(ptr->next != NULL){ ptr = ptr->next; } ptr->next = node; } } void hsearch(char *strsrch){ int strint1, hashinp1; strint1 = 0; hashinp1 = 0; while(*strsrch){ strint1 = strint1+(*strsrch); } hashinp1 = (strint1%100); struct llist *ptr1; ptr1 = a[hashinp1]; while(ptr1 != NULL){ if(ptr1->s == strsrch){ cout << "Element Found\n"; break; } else{ ptr1 = ptr1->next; } } if(ptr1 == NULL){ cout << "Element Not Found\n"; } } hinsert() is to insert elements into hash and hsearch is to search an element in the hash. Hash function is written inside hinsert() itself. In the main(), what i am initializing all the elements in a[] to be NULL like this: for(int i = 0;i < 100; i++){ a[i] = NULL; } Help is very much appreciated. Thanks !

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• Is there a possability that method executes only once

  - by Gandalf StormCrow

  I have a for loop and structure like this : for(....) .... .... if(isTrue) ... do something.. .. method to be executed once (doTrick) is declared outside for loop. ....endif endfor public void doTrick() ... ... ..end Is it possible for a method in for loop to be executed only once? I'm using JAVA

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• What does the extern keyword mean?

  - by mystify

  What does the extern keyword mean? I've seen that in front of an function declaration like extern void DoFoo ...

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• C++, class as parameter to a method, not template.

  - by ra170

  So, I came across an interesting method signature that I don't quite understand, it went along the lines of: void Initialize(std::vector< std::string > & param1, class SomeClassName * p); what I don't understand is the "class" keyword being used as the parameter, why is it there? Is it necessary to specify or it is purely superficial?

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• How do get the view that is the tapped detail-disclosure-button.

  - by Roberta

  The cell in this iPhone TableView definitely has a Detail-Disclosure-Button. When I tap it... shouldn't this code give me access to the button? Instead detailButton is always just null. - (void) tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath { UITableViewCell *aCell = [tableView cellForRowAtIndexPath:indexPath]; UIButton *detailButton = (UIButton *)[aCell accessoryView]; }

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• Find the end/finish coordinates you a UISwipeGestureRecognizer

  - by Code

  I can find the start coordinates of where a swipe starts by doing the following - (void)oneFingerSwipeUp:(UISwipeGestureRecognizer *)recognizer { CGPoint point = [recognizer locationInView:[self view]]; NSLog(@"Swipe up - start location: %f,%f", point.x, point.y); } Is it possible to find the coordinates where the swipe ended? I looked into the docs and its not mentioned. Is there some work around for this? Many Thanks, -Code

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• C++ invoke explicit template constructor

  - by aaa

  hello. Can you tell me how to invoke template constructor explicitly (in initializer list)? for example: struct T { template<class> T(); }; struct U { U() : t<void>() {} //does not work T t; }; thanks

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• Why does this generate a segmentation fault?

  - by avd

  #include<stdio.h> void foo(int **arr) { arr[1][1]++; } main() { int arr[20][20]; printf("%d\n",arr[1][1]); foo((int**)arr); printf("%d\n",arr[1][1]); }

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• Image from WebView

  - by kostas_menu

  hi!i m getting a photo from the web,but i see it very large..how could i see it with zoom out?this is my code for webView: public class gavros extends Activity { WebView browser; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.efimerides); browser =(WebView)findViewById(R.id.webview); browser.loadUrl("http://resources.sport-fm.gr/sportfm/newspapers/10/12/24/gavros.jpg"); }}

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• Passing template into boost function

  - by Ockonal

  template <class EventType> class IEvent; class IEventable; typedef boost::function<void (IEventable&, IEvent&)> behaviorRef; What is the right way for passing template class IEvent into boost function? With this code I get: error: functional cast expression list treated as compound expression error: template argument 1 is invalid error: invalid type in declaration before ‘;’ token

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• WPF, databinding

  - by fsl

  Hi there In a given binding is it possible to specify the path on the source object? Seems like this could a void a lot of trivial converters.. Imagine this..: class foo { bool A int B } <ComboBox ItemsSource="ListOfFoos" SelectedItem="{Binding number, SourcePath=B}" />

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• DroidGap: how get webpage?

  - by Max Usanin

  My source: public class MainActivity extends DroidGap { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); super.loadUrl("file:///android_asset/www/index.html"); } @Override public boolean dispatchTouchEvent(MotionEvent e) { super.dispatchTouchEvent(e); // Now what page ?? return true; } How to get the current web page?

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• WebView load javascript on the fly

  - by ADAM

  I have the following code which loads and html file into a webview - (void)awakeFromNib{ NSString *resourcesPath = [[NSBundle mainBundle] resourcePath]; NSString *htmlPath = [resourcesPath stringByAppendingString:@"/main.html"]; [[self mainFrame] loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:htmlPath]]]; } How would i dynamically load a css file (in the most efficient manner) as it does not suit to have the css file link in the html file

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• Retrieving the value of a concatenated variable within a Java FOR loop

  - by Rajat

  I have been using this "logic" in C++ and VB with success, but am tied up in Java... Simply put, public void DataProviderExample(String user, String pwd, String no_of_links, String link1, String link2, String link3) { for (int i=1;i<=no_of_links;i++) { String link = "link"+i; System.out.println(link); } Now, if the variables link1, link2 and link3 have a value of "X", "Y" and "Z" respectively, upon running this program, I get the following output - link1 link2 link3 What I want is - X Y Z Any ideas?

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• Java keep printing a new line in my recursive method

  - by Abra Grace Libretto White

  I am trying to write a recursive method to print n number of asteriks in a line and create a new line at the end. So, TriangleOps.line(5); would print ***** This is the code I wrote: public static void line (int n){ if(n>0){ System.out.println("*"); line(n-1); }} instead it prints * * * * * with a lot of space at the end. Can anyone tell me how to remove the line breaks?

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• How to concatenate two arrays in Java?

  - by Antti Sykäri

  I need to concatenate two String arrays in Java. void f(String[] first, String[] second) { String[] both = ??? } What is the easiest way to do this?

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• What's the output of the following code after removing errors?

  - by asdf

  Class A { public A() { system.out.println("con call"); } static { system.out.println("static call"); } { system.out.println("ins call"); } public static void main(string[] args) { new A(); new A(); } }

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• Test if a method is an override?

  - by Water Cooler v2

  Is there a way to tell if a method is an override? For e.g. public class Foo { public virtual void DoSomething() {} public virtual int GimmeIntPleez() { return 0; } } public class BabyFoo: Foo { public override int GimmeIntPleez() { return -1; } } Is it possible to reflect on BabyFoo and tell if GimmeIntPleez is an override?

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• saving an image object in sql server database from action method

  - by user3532152

  [HttpPost] public void Test(HttpPostedFileBase file) { UsersContext db = new UsersContext(); byte[] image = new byte[file.ContentLength]; file.InputStream.Read(image, 0, image.Length); CrimeReport i = new CrimeReport { ImageId=1, ImageName="Anjli",ImageContent = image, Active=true }; db.CrimeReports.Add(i); db.SaveChanges(); } I am getting an exception on db.CrimeReports.Add(i);

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• Create a java executable with Eclipse

  - by Micah

  This is a totally newbie question. I'm running Eclipse on Ubuntu. I created a test project that I want to compile to an executable (whataver the linux equivalent is of a Windows .exe file). Here's the contents of my program: public class MyTest { public static void main(String[] args) { System.out.println("You passed in: " + args[0]); } } I want to know how to compile it and then how to execute it from the command line. Thanks!

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• Is variables in the main methods are static.

  - by vaibhav

  Its a well known fact that static method can work only on static members. public static void Main() { Test t1 = new Test(); } Here Main method is static, but I hav'nt declared t1 as static. Is it implicitly static.

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• storing characters in char data type C language

  - by iSight

  Hi, I can store string of few length in char data type. But when it exceeds its capacity what can be the alternative way to store string. I am using char data type. void setString(char* inPoints) { if (strcmp(mPoints, inPoints)!= ZERO) { if (mPoints) { free(mPoints); } mPoints = (char*)malloc((strlen(inPoints) + 1) * sizeof(char)); strcpy(mPoints, inPoints); } }

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• TableView Background image going over cell textLabel

  - by Alex Trott

  Currently my tableview looks like this: as you can see, cell.textLabel and cell.detailTextLable both load this background, and i can't work out how to get them to stop loading the background, and for it only to be the backing on the cell. Here's my current code to change the cell: - (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath { [cell setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"tableCell.png"]]]; } How can i get round this problem? Thanks in advance.

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