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• Assigning a view controller to be the delegate of a subview which is not directly descendent?

  - by ambertch

  I am writing an iphone app where in numerous cases a subview needs to talk to its superview. For example: View A has a table view that contains photos A has a subview B which allows users to add photos, upon which I want to auto append them to A's table view So far I have been creating a @protocol in B, and registering A as the delegate. The problem in my case is that B has a subview C that allows users to add content, and I want actions in C to invoke changes in its grandparent, A. Currently I am working around this by passing around a self pointer to my base view controller (C.delegate = B.delegate), but it doesn't seem very proper to me. Any thoughts? (and/or general advice on code organization when all sort of subviews needs to talk to superviews would be greatly appreciated) Thanks!

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• How to do steps of an API through CLI/ batch mode without GUI

  - by Dolphin

  I'm using Audiveris API to generate xml(MusicXML) file once the sheetmusic(e.g. pdf/img file) is being input (i.e. When I give the sheet music (pdf file) location, to generate the xml file out of it (in another location)). Audiveris has its own GUI to do this. But can I do this process of sheetmusic-to-xml without using their GUI, but only from the CLI? If so how may I approach it? And also if so - is there a possibility to make it work in CLI - using Java code (say to invoke steps for API to occur in the CLI using Java Code - I've heard this is possible using shell commands)? I managed to open the GUI by opening the jar file from CLI. But I need to know whether there's a possibility to carry out the entire sheetmusic(say pdf)-to-xml process without using their GUI, but only through CLI (i.e. in batch mode)? Greatly appreciate any help or guidance Thanks in advance

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• Interacting with java code from C#

  - by Qua

  We've written a Java program which we are looking to use and interact with from C#. What are our options? Optimally it would be possible to compile the Java application as a library (.DLL) that we could reference from C# perhaps using P/Invoke. This, however, doesn't appear to be an option according to the first few searches online. We opt to be able to use ASP.NET to built a search engine powered by the Java code, so if this opens up for any other options please let us know.

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• How to do steps of an API through CLI

  - by Dolphin

  I'm using Audiveris API to generate xml(MusicXML) file once the sheetmusic(e.g. pdf/img file) is being input (i.e. When I give the sheet music (pdf file) location, to generate the xml file out of it (in another location)). Audiveris has its own GUI to do this. But can I do this process of sheetmusic-to-xml without using their GUI, but only from the CLI? If so how may I approach it? And also if so - is there a possibility to make it work in CLI - using Java code (say to invoke steps for API to occur in the CLI using Java Code)? I managed to open the GUI by opening the jar file from CLI. But I need to know whether there's a possibility to carry out the sheetmusic(say pdf)-to-xml process without using their GUI, but only through CLI? Greatly appreciate any help or guidance Thanks in advance

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• Is Software Raid1 Using mdadm with a Local Hard Disk and GNDB Possible?

  - by Travis

  I have multiple webservers which use many small files to created dynamic web pages. Caching the web pages isn't an option. The webserver also performs writes so I need a synchronous filesystem. I'm looking to maximise performance as it's my understanding that small files is the weakness (to varying degreess) of a cluster filesystem over ethernet. Currently I'm using Centos 5.5, 64 bit. Since it's only about 300MB of data, I'm looking at mdadm using RAID-1 with the GNBD and a local hard disk using the "--write-mostly" option so the reads are done using the local hard disk. Is this possible? If so, is there any advantage to making it a tmpfs disk instead of a local hard disk? Or will the files on the local hard disk just get cached in RAM anyway so I won't see a performance gain by using tmpfs, assuming there's enough RAM available?

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• Finding a private (NAT) host's IP using historic destination data

  - by l0c0b0x

  The issue: An unknown private (NAT) client is infected with malware and it's trying to access a Bot server at random times/dates. How we know about this: We receive bot traffic notices/alerts from REN-ISAC. Unfortunately, we don't receive those until the next day after it has happened. What they provide to us is: The source address (of the firewall) The destination addresses (it varies, but they're going to network subnet allocated to a German ISP) The source port (which varies--dynamic ports). Question: What would be the best approach to finding this internal host (historically) with a Cisco ASA as firewall? I'm guessing blocking anything to the destination address(es), and logging that type of traffic/access might allow me to find the source host, but I'm not sure which tool/command would be the most useful. I've seen Netflow thrown into a few responses when it comes to logging, but I'm confused with it's association of Logging, NAL, and nBAR, and how they relate to Netflow.

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• Connect to CentOS LAMP instance from Windows PCs

  - by Gnanesh

  I have a CentOS 6 machine running on our network which has a simple LAMP installation on it. I have some files there which I would want to access through other Windows PC which I am able to do so using the IP address of the CentOS machine. Since the IP address of the CentOS machine also could be dynamic I would want to connect to it using the computer / host name But I am not able to do so using the computer / host name of the CentOS machine. Can someone help me point out what I may be missing and help me out to resolve this?

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• Windows file server access control by device

  - by Ori Shavit

  I'm trying to build a system where access to certain resources (file shares) in Windows Server, is limited not only by the username (in a Active Directory domain), but also by the client machine. So far, I haven't found a good way to do this; adding the computer account to the DACL is apparently not the way to do it. Windows Server 2012 supports this with Dynamic Access Control, but this method requires all clients to be Windows 8, it seems, with no way to use this with Windows 7 clients. Is there a supported way to do this? (or alternatively, add support for device authorization with Windows 7).

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• SSL Certificate for local web server

  - by Firefly

  Is it at all possible to create a self-signed certificate for use on multiple machines on a local network which would stop the browser complaining it is not a trusted site? We have a product which is basically a computer running lighttpd to serve a web interface for configuring the computer (sort of how a router has a web interface). There can also be many of these machines running on the same network with dynamic IP's. What I basically want to do is enable SSL for extra security but I don't want people who are on the local network to be given a browser warning about the certificate not being trusted. Is this at all possible?

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• dns hierarchy not working !! Please help

  - by nikhilelite

  (DNS1 ,WWW1, Gateway1) (sub-internal network) (DNS0,WWW0,Gateway0) (internal network) DNS1: 192.168.250.3/24 WWW1: 192.168.250.4/24 Gateway1: 192.168.250.1 /24 (internal) :: 192.168.0.150 to 192.168.0.175 (external) DNS0:192.168.0.197/24 WWW0:192.168.0.197/24 Gateway0: 192.168.0.1 (internal) :: 69.94.x.x (external, dynamic ,isp control) Expected behavior: When using dig from internal (192.168.250.0/24) hosts, and query about domain from 192.168.0.197/16 nameserver's hosts (for which its authoritative) , it should return the ip address. Whats happening: After dig, answer section empty, the query is trying to access a.root server instead of 192.168.0.197 ,even though i have defined 192.168.0.197 as dns in gateway1's resolv.conf Why? I need this working asap, can anyone here help ?

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• C#, WinForms: What would prevent KeyDown events from chaining up from focused control up to main For

  - by blak3r

  As i understand it, when a keyboard button is pressed it should invoke the KeyDown event for the control which has focus. Then, the KeyDown for the parent control, so on and so forth until it reaches main form. UNLESS - along the chain one of the EventHandlers did: e.SuppressKeyPress = true; e.Handled = true; In my case, KeyDown events never get to the main form. I have Form - Panel - button for example. Panel doesn't offer a KeyDown Event, but it shouldn't stop it from reaching the main form right? Right now as a work around I set every single control to call an event handler I wrote. I'm basically trying to prevent Alt-F4 from closing the application and instead minimize it.

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• Using ModalAlert from cookbook - app does not load

  - by user127091

  I'm using iphone cookbook code to prompt a user for text in a UIAlertView. The cookbook code is available at http://github.com/erica/iphone-3.0-cookbook-/tree/master/C10-Alerts/03-Soliciting%20Text/ In my AppDelegate, applicationDidFinishLaunching(), I invoke as below NSString *str = [ModalAlert ask:@"what is your name?" withTextPrompt:@"ATTUID"]; But my app does not finish loading at all. I get a black screen indefinitely. There are no messages in the console. I tried creating just a UIAlertView with UITextField in the above function and it displays properly. (commenting out her code) Commenting out "CFRunLoopRun()" also loads the app. I'm probably doing something stupid but can't seem to figure it out.

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• How to share my localhost over the internet?

  - by Loolooii

  I really want to share my localhost over the internet to show my friends the progress of the website we're working on, so that I don't need to upload it to the public server each time I make a change. showoff.io is not free and localtunnel gives me "failed to authenticate" when trying to upload my public key (a lot of people seem to have this problem and there doesn't seem to be a solution for this). Does anyone know any other free service I can use or any other solution at all? I'm using a Mac. Thanks. UPDATE: with localhost I mean a web server running on my computer, I have a dynamic IP address and no I'm not behind a router (just using a wireless modem).

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• Pass Value between MDI Child in WinForm using C#

  - by abhilashca

  I have an MDI Parent, containing a MenuStrip. When I click on one of the Menu, two Child Forms are displayed simultaneoulsy. I have a TextBox and a Send Button on one of my ChildForm. When I type-in something in that TextBox and Click the Send Button, I need to show that value in the TextBox of my Second Child Form. What I had done is, I wrote a Public Function in the Second Child Form and tried to invoke it by creating an object of Second Form, on the Send Button click event. When I put break points, in that Public Function, I find that the control is flowing through that Public function on cliking the Send button. But the passed value is not displayed. And, I know that is not the standard way to do that. Any sample script for help? Thanks.

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• Delegate won't update page

  - by mat690

  I am trying to change the active index of a multiview by using a delegate and it doesn't work as i expect. this is my code protected void ucWaitPage_FinishedWaiting(PerformAfterWaitDelegate performAfterWait) { performAfterWait.Invoke(); this.SetIndex(); } private void SetIndex() { this.mvwTest.ActiveViewIndex = 0; } The performAfterWait Delegate points to the SetIndex() method. When the performAfterWait delegate gets invoked SetIndex() gets called but when SetIndex() returns this.mvwTest.ActiveViewIndex reverts to being equal to 1. However when i call the SetIndex() method directly it sets this.mvwTest.ActiveViewIndex = 0 and the change persists when the method returns.

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• Open a file with su/sudo inside Emacs

  - by Chris Conway

  Suppose I want to open a file in an existing Emacs session using su or sudo, without dropping down to a shell and doing sudoedit or sudo emacs. One way to do this is (require 'tramp) C-c C-f /sudo::/path/to/file but this requires an expensive round-trip through SSH. Is there a more direct way? [EDIT] @JBB is right. I want to be able to invoke su/sudo to save as well as open. It would be OK (but not ideal) to re-authorize when saving. What I'm looking for is variations of find-file and save-buffer that can be "piped" through su/sudo.

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• Shows different behaviour in release and debug mode .apk

  - by Ashique Muhammed

  My android application get restarted when I take the application from home screen, but this not a consistent. Some time it works perfectly (resume with the last visited activity). My application contains a splash screen activity and 5 activities in tab layout. Usage Start application After splash screen the application shows one of the activity in tab Press home button Try to invoke application from home screen Application gets restarted, it is not happening always. I am working on actual device. Android version 2.3.3 Here is the root activity in my manifest file. <activity android:name="com.nes.smrt.gui.Survey" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait" android:alwaysRetainTaskState="true"> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> </intent-filter> </activity> Any help would be greatly appreciated!

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• Change Makefile variable value

  - by paulgray

  Is there a way to reassign Makefile variable value inside of the target body? What I am trying to do is to add some extra flags for debug compilation: %.erl: %.beam $(ERLC) $(ERLFLAGS) -o ebin $< test: clean debug_compile_flag compile compile_test debug_compile: $(ERLCFLAGS) += -DTEST So if I invoke test target I would like to clean up my environment, add some new flags (like -DTEST to the existing ones), compile the whole code once again (first sources, then test modules). I do not want to copy/paste the code for compiling with some new flags set since there is a lot of logic put here and there. Is there some easy way to redefine the variable value so I can reuse the existing code?

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• apache requests failing

  - by Josh

  I'm trying to figure out why sometimes the client fails to load objects/requests from a dynamic page served from Apache/MySql/Debian machine. Let's say 13 objects are to be loaded for a total of 185.3 KB load, with no external objects (no DNS lookups) and no other traffic at the same time, randomly some of those object do not load. However, if I perform a refresh, sometimes all of them load or some might fail again. I only have 1Mbps/up and my DNS is been hosted externally (everydns). What could be the reason of this issue? Any comments will be appreciated.

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• Explicit method tables in C# instead of OO - good? bad?

  - by FunctorSalad

  Hi! I hope the title doesn't sound too subjective; I absolutely do not mean to start a debate on OO in general. I'd merely like to discuss the basic pros and cons for different ways of solving the following sort of problem. Let's take this minimal example: you want to express an abstract datatype T with functions that may take T as input, output, or both: f1 : Takes a T, returns an int f2 : Takes a string, returns a T f3 : Takes a T and a double, returns another T I'd like to avoid downcasting and any other dynamic typing. I'd also like to avoid mutation whenever possible. 1: Abstract-class-based attempt abstract class T { abstract int f1(); // We can't have abstract constructors, so the best we can do, as I see it, is: abstract void f2(string s); // The convention would be that you'd replace calls to the original f2 by invocation of the nullary constructor of the implementing type, followed by invocation of f2. f2 would need to have side-effects to be of any use. // f3 is a problem too: abstract T f3(double d); // This doesn't express that the return value is of the *same* type as the object whose method is invoked; it just expresses that the return value is *some* T. } 2: Parametric polymorphism and an auxilliary class (all implementing classes of TImpl will be singleton classes): abstract class TImpl<T> { abstract int f1(T t); abstract T f2(string s); abstract T f3(T t, double d); } We no longer express that some concrete type actually implements our original spec -- an implementation is simply a type Foo for which we happen to have an instance of TImpl. This doesn't seem to be a problem: If you want a function that works on arbitrary implementations, you just do something like: // Say we want to return a Bar given an arbitrary implementation of our abstract type Bar bar<T>(TImpl<T> ti, T t); At this point, one might as well skip inheritance and singletons altogether and use a 3 First-class function table class /* or struct, even */ TDictT<T> { readonly Func<T,int> f1; readonly Func<string,T> f2; readonly Func<T,double,T> f3; TDict( ... ) { this.f1 = f1; this.f2 = f2; this.f3 = f3; } } Bar bar<T>(TDict<T> td; T t); Though I don't see much practical difference between #2 and #3. Example Implementation class MyT { /* raw data structure goes here; this class needn't have any methods */ } // It doesn't matter where we put the following; could be a static method of MyT, or some static class collecting dictionaries static readonly TDict<MyT> MyTDict = new TDict<MyT>( (t) => /* body of f1 goes here */ , // f2 (s) => /* body of f2 goes here */, // f3 (t,d) => /* body of f3 goes here */ ); Thoughts? #3 is unidiomatic, but it seems rather safe and clean. One question is whether there are any performance concerns with it. I don't usually need dynamic dispatch, and I'd prefer if these function bodies get statically inlined in places where the concrete implementing type is known statically. Is #2 better in that regard?

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• .NEt on WIN to Mono on Ubuntu

  - by Srikanth

  I am looking at a possibility to change my ASP.NET 2.0 app to Mono framework. I have used the mono analyzer tool and it does detect some p/invoke and interop dependencies. For ex. 1) We use excel interops and on linux we are looking to use staroffice/Openoffice instead. Is there an easy way of substituting excel with staroffice? (I know it sounds bizarre, but just don't want to miss out in case anyone has done it already.) 2) LDAP auth: What could be the best alternative in Ubuntu (or an other flavour of Linux) ? 3) Is there an ajax framework for mono? Preferably with similar controls as Atlas?? I hope I am not too ambitious here.. thanks.

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• Why Microsoft not provide for C# a static Win32 class with the most native functions and structures

  - by Oleg

  Everybody who used P/Invoke of Windows API knows a long list of declarations of static functions with attributes like [DllImport ("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)] The declaration of structures copied from Windows headers like WinNT.h or from web sites like www.pinvoke.net take also a lot of place in our programs. Why we all have to spend our time for this? Why Microsoft not give us a simple way to include a line like in old unmanaged programs #include <windows.h> and we would be have access to a static class Native with all or the most Windows functions and structures inside?

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• Use Excel Table Column in ComboBox Input Range property

  - by V7L

  I asked this in StackOverflow and was redirected here. Apologies for redundancy. I have an Excel worksheet with a combo box on Sheet1 that is populated via its Input Range property from a Dynamic Named Range on Sheet2. It works fine and no VBA is required. My data on Sheet2 is actually in an Excel Table (all data is in the XLS file, no external data sources). For clarity, I wanted to use a structured table reference for the combo box's Input Range, but cannot seem to find a syntax that works, e.g. myTable[[#Data],[myColumn3]] I cannot find any indications that the combo box WILL accept structured table references, though I cannot see why it wouldn't. So, two part question: 1. Is is possible to use a table column reference in the combo box input range property (not using VBA) and 2. HOW?

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• Resizing a System Partition Windows Server 2003 VM (Getting GParted Error)

  - by Dina

  I am getting an error while trying to resize System Partition for Windows 2003 Server (this is a VM on a Hyper-v Windows Server 2008) using GParted Live CD ISO. Followed this tutorial: http://malaysiavm.com/blog/how-to-resize-windows-2003-server-virtual-disk-on-vmware-esx/ and GParted Doc http://gparted.sourceforge.net/larry/resize/resizing.htm (They are very similar) The VM has a Dynamic VHD file, I have already increased it using Hyper-v. GParted doesn't give any clues or details for the error. Just simply errors when trying to grow the partition. Any ideas what I can do? Thanks! Using version of Gparted: gparted-live-0.13.1-2

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• Access denied at webservice

  - by phenevo

  Hi, I have a winforms, and it connecting wit webservice. Webservice has method which create folder Directory.Create(path); Webservice is at company server, and this folder must me create at another disc in out company. When I invoke this method, i get exception "Acces denied to path..." When webservice was running at my computer everything was ok. I have full acces to this network disc. But how to set full access to my company server?? When I check this method: [WebMethod] public string GetNameOfUser() { return WindowsIdentity.GetCurrent().Name; } I get <string>NT AUTHORITY\NETWORK SERVICE</string>

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