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  • How do SEL and @select work in iphone sdk?

    - by BlueDolphin
    I have one sample code which get SEL from current object, SEL callback = @selector(mymethod:parameter2); And I have method like -(void)mymethod:(id)v1 parameter2;(NSString*)v2 { } Now I need to move mymethod to another object, say myDelegate. I have tried: SEL callback = @selector(myDelegate, mymethod:parameter2); but appears not compiling. Thanks.

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  • Creating a fixed axis for Silverlight Toolkit charts

    - by Bill Jeeves
    Every example I see of a series in a Silverlight chart fromt he toolkit has a binding for bothe IndependentValueBinding and DependentValueBinding. In my code I want a fixed axis for the categories (Independent) - so every value get's "X" perhaps. Is there a way to do this? Essentially I have ten bar series in one chart and I want them all to sit together. It seems silly to create a new class to hold them in just so I can add a string property for the axis name.

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  • Emacs bulk indent for Python

    - by Vernon
    Working with Python in Emacs if I want to add a try/catch to a block of code, I often find that I am having to indent the whole block, line by line. In Emacs, how do you indent the whole block at once. I am not an experienced Emacs user, but just find it is the best tool for working through ssh. I am using Emacs on the command line(Ubuntu), not as a gui, if that makes any difference.

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  • textbox accept only digits

    - by hiba salem
    Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress Dim allowedChars As String = "0123456789$," If allowedChars.IndexOf(e.KeyChar) = -1 Then ' Invalid Character e.Handled = True End If End Sub this code accept only digits and its working like a charm but if i typed a wrong number its not allowing me to use the delete or the backspace on the keyboard how to solve this problem ?

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  • Bash:Redirection Halts

    - by user365828
    I have a command e.g. ls-l file.txt When there is insufficient space on my drive, the above command just stalls waiting for something to happen. Does anyone know about a code that I could write enabling me to display a message about the lack of space on my drive? E.g. could I use IPC or do you have any other ideas? Thanks in advance.

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  • printing the instance in Python

    - by kame
    Hello! With this code: class Complex: def __init__(self, realpart, imagpart): self.real = realpart self.imag = imagpart print self.real, self.imag class Circle: def __init__(self, radius): print "A circle wiht the radius", radius, "has the properties:" print "circumference =", 3.14*radius print "area =", 3.14*radius**2 I get this output: >>> Complex(3,2) 3 2 <__main__.Complex instance at 0x01412210> But why does he print the last line?

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  • Working with wchar in C

    - by Richard Mar.
    I have this code: #include <stdio.h> #include <wchar.h> int main() { wchar_t *foo = L"ðh"; wprintf(L"[%ls]\n", foo); return 0; } And when I compile it, it gives me the implicit declaration of function ‘wprintf’ warning. I know that I should link the wchar library during compilation, but how do I do that?

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  • Advantages of createElement over innerHTML?

    - by oninea
    In practice, what are the advantages of using createElement over innerHTML? I am asking because I'm convinced that using innerHTML is more efficient in terms of performance and code readability/maintainability but my teammates have settled on using createElement as the coding approach. I just wanna understand how createElement can be more efficient.

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  • Focus process window, ShowWindow vs System Tray

    - by ais
    I try open process window, this code work if window state is minimize, but if program in system tray window isn't opened. [DllImport("User32")] private static extern int SetForegroundWindow(IntPtr hwnd); [DllImport("User32")] private static extern bool ShowWindow(IntPtr hWnd, int nCmdShow); private static void ShowWindow(Process process) { ShowWindow(process.MainWindowHandle, SW_RESTORE); SetForegroundWindow(process.MainWindowHandle); }

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  • [Castle Dynamic Proxy] What really interceptors do with my c# class?

    - by Pandiya Chendur
    I was asked to implement castle dynamic proxy in my asp.net web application and i was going through couple of articles which i got from Castle Project and Code Project about castle dynamic proxy in asp.net web application.... Both articles delt with creating interceptors but i can't get the idea why interceptors are used with classes.... Why should i intercept my class which is behaving properly?

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  • is there a better way of replacing duplicates in a list (python)

    - by myeu2
    Given a list: l1: ['a', 'b', 'c', 'a', 'a', 'b'] output: ['a', 'b', 'c', 'a'_1, 'a'_2, 'b'_1 ] I created the following code to get the output. Its messyyy.. for index in range(len(l1)): counter = 1 list_of_duplicates_for_item = [dup_index for dup_index, item in enumerate(l1) if item == l1[index] and l1.count(l1[index]) > 1] for dup_index in list_of_duplicates_for_item[1:]: l1[dup_index] = l1[dup_index] + '_' + str(counter) counter = counter + 1 Is there a more pythonic way of doing this? I couldnt find anything on the web.

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  • updating a properties file in a web application

    - by AmiraGL
    i have a properties file (under rsources folder) in which i'm stocking a variable (key=value), i need to update it when a user insert a new value or update the older one , so can i do it ? i have doubts because it's a web application so it' simply a war deployed in the server so how it is possible to access the .properties file and change it directly from the code . if it's not possible is there another solution ? Any Help will be apprecited Many thanks

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  • How to change the way that timer schedules in TimerTask?

    - by Judking
    Here is the code snippet: Timer t = new Timer(); TimerTask task = new TimerTask() { @Override public void run() { //change the timer rate of scheduleAtFixedRate here } }; //every 10 sec t.scheduleAtFixedRate(task, new Date(), 10000); Could anyone tell me how to change the rate of timer to t.scheduleAtFixedRate(task, new Date(), 30000) in method run from TimerTask instance? Thanks a lot!

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  • What is the correct way to create a single instance application?

    - by Nidonocu
    Using C# and WPF under .net (rather than WindowsForms or console), what is the correct way to create an application that can only be run as a single instance? I know it has something to do with some mythical thing called a mutex, rarely can I find someone that bothers to stop and explain what one of these are. The code needs to also inform the already running instance that the user tried to start a second one, and maybe also pass any command line arguments if any existed.

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  • Batch file to perform a looped search based on the line items of a text file.

    - by Tulga
    I have been reading great posts in this forum and got close to what I want to do but couldn't figure out the exact code. I want to create a windows batch file to do following: Perform a looped search for each line item of a text file (this is a list of keyword) to locate files in a a specific directory For this search partial match is okay. Each time a file is found, move it to a predefined directory (e.g. C:\temp\search_results) Thanks.

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  • In C, during step by step debugging in a function, how can i view the content of an array in the "Autos?" window along with the other variables?

    - by AppsAndGo
    I'm using VS 2012, and I'm working on a bubble sort. After searching I found a nifty trick to see the content of the array in the "Watch 1" tab, (How to view contents of an array while debugging in Code Blocks?), but going from "watch 1" to "Autos" every step to see what's changing in the array isn't practical at all. How can i see the array content within "Autos" along side my other changing variables, where i need it to show?

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  • Hot to get rid of memory allocations/deallocations in swig wrappers?

    - by Dmitriy Matveev
    I want to use swig for generation of read-only wrappers for a complex object. The object which I want to wrap will always be existent while I will read it. And also I will only use my wrappers at the time that object is existent, thus I don't need any memory management from SWIG. For following swig interface: %module test %immutable; %inline %{ struct Foo { int a; }; struct Bar { int b; Foo f; }; %} I will have a wrappers which will have a lot of garbage in generated interfaces and do useless work which will reduce performance in my case. Generated java wrapper for Bar class will be like this: public class Bar { private long swigCPtr; protected boolean swigCMemOwn; protected Bar(long cPtr, boolean cMemoryOwn) { swigCMemOwn = cMemoryOwn; swigCPtr = cPtr; } protected static long getCPtr(Bar obj) { return (obj == null) ? 0 : obj.swigCPtr; } protected void finalize() { delete(); } public synchronized void delete() { if (swigCPtr != 0) { if (swigCMemOwn) { swigCMemOwn = false; testJNI.delete_Bar(swigCPtr); } swigCPtr = 0; } } public int getB() { return testJNI.Bar_b_get(swigCPtr, this); } public Foo getF() { return new Foo(testJNI.Bar_f_get(swigCPtr, this), true); } public Bar() { this(testJNI.new_Bar(), true); } } I don't need 'swigCMemOwn' field in my wrapper since it always will be false. All code related to this field will also be useless. There are also unnecessary logic in native code: SWIGEXPORT jlong JNICALL Java_some_testJNI_Bar_1f_1get(JNIEnv *jenv, jclass jcls, jlong jarg1, jobject jarg1_) { jlong jresult = 0 ; struct Bar *arg1 = (struct Bar *) 0 ; Foo result; (void)jenv; (void)jcls; (void)jarg1_; arg1 = *(struct Bar **)&jarg1; result = ((arg1)->f); { Foo * resultptr = (Foo *) malloc(sizeof(Foo)); memmove(resultptr, &result, sizeof(Foo)); *(Foo **)&jresult = resultptr; } return jresult; } I don't need these calls to malloc and memmove. I want to force swig to resolve both of these problems, but don't know how. Is it possible?

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  • Limit a double to two decimal places

    - by Jacob
    How do I achieve the following conversion from double to a string: 1.4324 => "1.43" 9.4000 => "9.4" 43.000 => "43" ie I want to round to to decimal places but dont want any trailing zeros, ie i dont want 9.4 => "9.40" (wrong) 43.000 => "43.00" (wrong) So this code which I have now doesn't work as it displays excess twos: [NSString stringWithFormat: @"%.2f", total]

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