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  • #Define's scope throughout library?

    - by Mohit Deshpande
    Say I have a constant: #define PI 3.14 Say I have a static library with multiple header and source files. If I declare this in the header file, will its scope apply to all of the source files? Or do the source files need to include the header with the declaration of PI?

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  • Where to store global variables like file paths in java ?

    - by Jules Olléon
    In my application I use some icons. Where should I store the path of the directory containing those icons ? The icons are used in different classes so it doesn't really make sense to store them in one of those classes in particular. I read that global variables are evil, but is it acceptable to use a class (eg Commons) containing only public static final fields to store this king of data ? What solution is used in professional applications ?

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  • Boost any usage

    - by Ockonal
    Hello, how can I insert my own class objects into ptr_map from boost. The objects are templated so I can't use some static typename in the map. So I did: ptr_map<string, any> someMap; My class inherits the boost::noncopyable. someMap.insert("Test", new MyClass()); The error is: error: no matching function for call to ‘boost::ptr_map.

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  • C# Keyboard Input (Beginner Help)

    - by ThickBook
    I am trying to ask user "enter any key and when that key is pressed it shows that "You Pressed "Key". Can you help what's wrong in this code? This is what I have written using System; class Program { public static void Main(string[] args) { Console.Write("Enter any Key: "); char name = Console.Read(); Console.WriteLine("You pressed {0}", name); } }

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  • can't understand the url function used in the google taskque api documentation

    - by Bunny Rabbit
    import com.google.appengine.api.labs.taskqueue.Queue; import com.google.appengine.api.labs.taskqueue.QueueFactory; import static com.google.appengine.api.labs.taskqueue.TaskOptions.Builder.*; // ... Queue queue = QueueFactory.getDefaultQueue(); queue.add(url("/worker").param("key", key)) in the code example given on the google task queue documentation page i can't understand the url("/worker") function they are calling in the queues.add() invocation .

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  • Drag N Drop utilizing simple cursor

    - by Cameron
    I'm using CommonsGuy's drag n drop example and I am basically trying to integrate it with the Android notepad example. Drag N Drop Out of the 2 different drag n drop examples i've seen they have all used a static string array where as i'm getting a list from a database and using simple cursor adapter. So my question is how to get the results from simple cursor adapter into a string array, but still have it return the row id when the list item is clicked so I can pass it to the new activity that edits the note. Here is my code: Cursor notesCursor = mDbHelper.fetchAllNotes(); startManagingCursor(notesCursor); // Create an array to specify the fields we want to display in the list (only NAME) String[] from = new String[]{WeightsDatabase.KEY_NAME}; // and an array of the fields we want to bind those fields to (in this case just text1) int[] to = new int[]{R.id.weightrows}; // Now create a simple cursor adapter and set it to display SimpleCursorAdapter notes = new SimpleCursorAdapter(this, R.layout.weights_row, notesCursor, from, to); setListAdapter(notes); And here is the code i'm trying to work that into. public class TouchListViewDemo extends ListActivity { private static String[] items={"lorem", "ipsum", "dolor", "sit", "amet", "consectetuer", "adipiscing", "elit", "morbi", "vel", "ligula", "vitae", "arcu", "aliquet", "mollis", "etiam", "vel", "erat", "placerat", "ante", "porttitor", "sodales", "pellentesque", "augue", "purus"}; private IconicAdapter adapter=null; private ArrayList<String> array=new ArrayList<String>(Arrays.asList(items)); @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.main); adapter=new IconicAdapter(); setListAdapter(adapter); TouchListView tlv=(TouchListView)getListView(); tlv.setDropListener(onDrop); tlv.setRemoveListener(onRemove); } private TouchListView.DropListener onDrop=new TouchListView.DropListener() { @Override public void drop(int from, int to) { String item=adapter.getItem(from); adapter.remove(item); adapter.insert(item, to); } }; private TouchListView.RemoveListener onRemove=new TouchListView.RemoveListener() { @Override public void remove(int which) { adapter.remove(adapter.getItem(which)); } }; class IconicAdapter extends ArrayAdapter<String> { IconicAdapter() { super(TouchListViewDemo.this, R.layout.row2, array); } public View getView(int position, View convertView, ViewGroup parent) { View row=convertView; if (row==null) { LayoutInflater inflater=getLayoutInflater(); row=inflater.inflate(R.layout.row2, parent, false); } TextView label=(TextView)row.findViewById(R.id.label); label.setText(array.get(position)); return(row); } } } I know i'm asking for a lot, but a point in the right direction would help quite a bit! Thanks

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  • Need help in page curl animation

    - by visu
    Hi, I am developing one static application, which includes the animation like page curl. Is there any way to create the animation like page flipping when the user clicks on the page. Please anybody helps in this, am stroked into this part in my application. Thanks in advance. Vulvaji.

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  • Is it possible to do DNS-based ACLs on a Cisco ASA?

    - by pickles
    Short of using static IP addresses, is it possible to have a Cisco ASA use a DNS name rather than an IP address? For instance, if I want to limit a host in the DMZ to access only one particular web service, but that web service might be globally load balanced or using DynDNS or cloud, how can the ACL be expressed so that a fixed IP address isn't used and the admin doesn't have to keep opening and closing down IP addresses?

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  • Vector iterators in for loops, return statements, warning, c++

    - by Crystal
    Had 3 questions regarding a hw assignment for C++. The goal was to create a simple palindrome method. Here is my template for that: #ifndef PALINDROME_H #define PALINDROME_H #include <vector> #include <iostream> #include <cmath> template <class T> static bool palindrome(const std::vector<T> &input) { std::vector<T>::const_iterator it = input.begin(); std::vector<T>::const_reverse_iterator rit = input.rbegin(); for (int i = 0; i < input.size()/2; i++, it++, rit++) { if (!(*it == *rit)) { return false; } } return true; } template <class T> static void showVector(const std::vector<T> &input) { for (std::vector<T>::const_iterator it = input.begin(); it != input.end(); it++) { std::cout << *it << " "; } } #endif Regarding the above code, can you have more than one iterator declared in the first part of the for loop? I tried defining both the "it" and "rit" in the palindrome() method, and I kept on getting an error about needing a "," before rit. But when I cut and paste outside the for loop, no errors from the compiler. (I'm using VS 2008). Second question, I pretty much just brain farted on this one. But is the way I have my return statements in the palindrome() method ok? In my head, I think it works like, once the *it and *rit do not equal each other, then the function returns false, and the method exits at this point. Otherwise if it goes all the way through the for loop, then it returns true at the end. I totally brain farted on how return statements work in if blocks and I tried looking up a good example in my book and I couldn't find one. Finally, I get this warnings: \palindrome.h(14) : warning C4018: '<' : signed/unsigned mismatch Now is that because I run my for loop until (i < input.size()/2) and the compiler is telling me that input can be negative? Thanks!

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  • why is optional chaining required in an if let statement

    - by b-ryan ca
    Why would the Swift compiler expect me to write if let addressNumber = paul.residence?.address?.buildingNumber?.toInt() { } instead of just writing: if let addressNumber = paul.residence.address.buildingNumber.toInt() { } The compiler clearly has the static type information to handle the conditional statement for the first dereference of the optional value and each following value. Why would it not continue to do so for the following statements?

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  • How to const declare the this pointer sent as parameter

    - by Tomas
    Hi, I want to const declare the this pointer received as an argument. static void Class::func(const OtherClass *otherClass) { // use otherClass pointer to read, but not write to it. } It is being called like this: void OtherClass::func() { Class::func(this); } This does not compile nad if i dont const declare the OtherClass pointer, I can change it. Thanks.

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  • Performance Cost of a Memcopy in C/C++

    - by Cenoc
    So whenever I write code I always think about the performance implications. I've often wondered, what is the "cost" of using a memcopy relative to other functions in terms of performance? For example, I may be writing a sequence of numbers to a static buffer and concentrate on a frame within the buffer, in order to keep the frame once I get to the end of the buffer, I might memcopy all of it to the beginning OR I can implement an algorithm to amortize the computation.

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  • java.lang.UnsatisfiedLinkError

    - by Prashant
    HI ALL, I got an error java.lang.UnsatisfiedLinkError, I am not getting wat the problem is. public static void main(String[] args) { try { System.loadLibrary("pfcasyncmt"); }catch(){ } } ERROR- xception in thread "main" java.lang.UnsatisfiedLinkError: no pfcasyncmt in java.library.path

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  • GUI programming, what to learn, already know console C++

    - by conqrr
    i have already learnt c++ console(love it!) and want to do gui programming, i have looked at Qt but i dont like the size of exe produced at all,even after compressing or static linking.... Shall i learn c# and gui programming?? is it easy to move from c++? what is dot net exactly by the way and how can it be useful to me and my CV in future??

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  • How to pass int values to asp.net page methods from jquery?

    - by Pandiya Chendur
    I am using asp.net page methods with jquery..... Here is my code, $.ajax({ type: "POST", url: "Default.aspx/GetRecords", data: "{}", contentType: "application/json; charset=utf-8", dataType: "json", and asp.net page method is, [WebMethod] public static string GetRecords(int currentPage,int pagesize) { // my logic here } How to pass values for currentPage and pagesize from jquery....

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  • Assigning IDs to instances of a class (Pythonic)

    - by mellort
    I want to have each instance of some class have a unique integer identifier based on the order that I create them, starting with (say) 0. In Java, I could do this with a static class variable. I know I can emulate the same sort of behavior with Python, but what would be the most 'Pythonic' way to do this? Thanks

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  • Critiquing PHP-code / PerlCritic for PHP?

    - by jeekl
    I'm looking for an equivalent of PerlCritic for PHP. PerlCritc is a static source code analyzer that qritiques code and warns about everything from unused variables, to unsafe ways to handle data to almost anything. Is there such a thing for PHP that could (preferably) be run outside of an IDE, so that source code analysis could be automated?

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  • JBoss 4.2.3 - how to find path to jar file

    - by Gribbler
    I'm getting an error in a JBOSS application: Static Method [addHeader] not found on JavaBean [class com.ppnet.webservice.WebserviceHeaderWriter] I have checked the WebserviceHeaderWriter.jar that gets deployed into JBOSS and checked it in eclipse. It looks as if it should have this method on it. I think that the JBoss application might be loading a different version of the WebserviceHeaderWriter.jar without this method on it, is there a way to check the location of the file that is getting loaded?

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  • Java program grading

    - by pasito15
    I've been working on this program for hours and I can't figure out how to get the program to actually print the grades from the scores Text file public class Assign7{ private double finalScore; private double private_quiz1; private double private_quiz2; private double private_midTerm; private double private_final; private final char grade; public Assign7(double finalScore){ private_quiz1 = 1.25; private_quiz2 = 1.25; private_midTerm = 0.25; private_final = 0.50; if (finalScore >= 90) { grade = 'A'; } else if (finalScore >= 80) { grade = 'B'; } else if (finalScore >= 70) { grade = 'C'; } else if (finalScore>= 60) { grade = 'D'; } else { grade = 'F'; } } public String toString(){ return finalScore+":"+private_quiz1+":"+private_quiz2+":"+private_midTerm+":"+private_final; } } this code compiles as well as this one import java.util.*; import java.io.*; public class Assign7Test{ public static void main(String[] args)throws Exception{ int q1,q2; int m = 0; int f = 0; int Record ; String name; Scanner myIn = new Scanner( new File("scores.txt") ); System.out.println( myIn.nextLine() +" avg "+"letter"); while( myIn.hasNext() ){ name = myIn.next(); q1 = myIn.nextInt(); q2 = myIn.nextInt(); m = myIn.nextInt(); f = myIn.nextInt(); Record myR = new Record( name, q1,q2,m,f); System.out.println(myR); } } public static class Record { public Record() { } public Record(String name, int q1, int q2, int m, int f) { } } } once a compile the code i get this which dosent exactly compute the numbers I have in the scores.txt Name quiz1 quiz2 midterm final avg letter Assign7Test$Record@4bcc946b Assign7Test$Record@642423 Exception in thread "main" java.until.InputMismatchException at java.until.Scanner.throwFor(Unknown Source) at java.until.Scanner.next(Unknown Source) at java.until.Scanner.nextInt(Unknown Source) at java.until.Scanner.nextInt(Unknown Source) at Assign7Test.main(Assign7Test.java:25)

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  • Generate .sql files using rake task

    - by Prasanna
    Hi, I have a table called 'choices' in this table i am storing static data for my site like Blood Groups , qualification, job types etc., I have to create rake tasks one is for to create backup choices.sql file from choices table data, second one is dump the data from .sql file to choice table. How can I create the rake tasks. Any other best way to take backup data from a table and load data into the table Thanks

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  • Is there any library to represent SQL queries as objects in Java code?

    - by Pregzt
    I was wondering if there is any library that can be used to represent SQL queries as objects in Java. In the code I have plenty of static variables of type java.lang.String that are hand written SQL queries. I would be looking for library having a nice fluent API that allows me to represent the queries as objects rather than strings. Example: Query q = select("DATE", "QUOTE") .from("STOCKMARKET") .where(eq("CORP", "?")) .orderBy("DATE", DESC);

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