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  • Tuple struct constructor complains about private fields

    - by Grubermensch
    I am working on a basic shell interpreter to familiarize myself with Rust. While working on the table for storing suspended jobs in the shell, I have gotten stuck at the following compiler error message: tsh.rs:8:18: 8:31 error: cannot invoke tuple struct constructor with private fields tsh.rs:8 let mut jobs = job::JobsList(vec![]); ^~~~~~~~~~~~~ It's unclear to me what is being seen as private here. As you can see below, both of the structs are tagged with pub in my module file. So, what's the secret sauce? tsh.rs use std::io; mod job; fn main() { // Initialize jobs list let mut jobs = job::JobsList(vec![]); loop { /*** Shell runtime loop ***/ } } job.rs use std::fmt; pub struct Job { jid: int, pid: int, cmd: String } impl fmt::Show for Job { /*** Formatter ***/ } pub struct JobsList(Vec<Job>); impl fmt::Show for JobsList { /*** Formatter ***/ }

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  • J2ME private folder(only accessible to my midlet)

    - by Shankar
    I have two midlets, one will download some files form server everyday and the other uses these files. If i download the files to a normal folder the mobile user may delete the folder or files manually. So i need a private folder which is hidden and only accessible for my midlets. I heard about private folders which symbian platform provides for each application which are not accessible to users. I need such a folder for my j2me app. How to create such folder?? Shankar

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  • How to Access a Private Variable?

    - by SoulBeaver
    This question isn't meant to sound as blatantly insulting as it probably is right now. This is a homework assignment, and the spec sheet is scarce and poorly designed to say the least. We have a function: double refuel( int liter, GasStation *gs ) { // TODO: Access private variable MaxFuel of gs and decrement. } Sound simple enough? It should be, but the class GasStation comes with no function that accesses the private variable MaxFuel. So how can I access it anyway using the function refuel? I'm not considering creating a function setFuel( int liter ) because the teacher always complains rather energetically if I change his specification. So... I guess I have to do some sort of hack around it, but I'm not sure how to go about this without explicitely changing the only function in GasStation and giving it a parameter so that I can call it here. Any hints perhaps?

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  • A pragmatic view on private vs public

    - by Denis Gorbachev
    Hello everybody! I've always wondered on the topic of public, protected and private properties. My memory can easily recall times when I had to hack somebody's code, and having the hacked-upon class variables declared as private was always upsetting. Also, there were (more) times I've written a class myself, and had never recognized any potential gain of privatizing the property. I should note here that using public vars is not in my habit: I adhere to the principles of OOP by utilizing getters and setters. So, what's the whole point in these restrictions?

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  • delegating into private parts

    - by FredOverflow
    Sometimes, C++'s notion of privacy just baffles me :-) class Foo { struct Bar; Bar* p; public: Bar* operator->() const { return p; } }; struct Foo::Bar { void baz() { std::cout << "inside baz\n"; } }; int main() { Foo::Bar b; // error: 'struct Foo::Bar' is private within this context Foo f; f->baz(); // fine } Since Foo::Bar is private, I cannot declare b in main. Yet I can call methods from Foo::Bar just fine. Why the hell is this allowed? Was that an accident or by design?

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  • Meta key in Terminal.app vs national characters

    - by yacoob
    I'm using Terminal.app, and I'd like to use emacs running inside - either locally, or after sshing to remote server. Problem is, I can't get working Meta modifier. Namely, if I enable 'Use option as meta key', Option key works like proper Meta, but I lose ability to enter Polish diacritics (aelósznzc), that are entered with right Option. If I disable 'Use option as meta key', my Meta is gone, but I can again use Polish characters. In this state they appear only with right Option modifier, so I guess it's Terminal.app's fault that it doesn't make a difference between left and right Option key, when the relevant preference is selected. What are my options then? Is there a good solution for my problem? I can always use ESC as a poor man's Meta replacement, but I don't like that idea.

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  • .NET Properties - Use Private Set or ReadOnly Property?

    - by tgxiii
    In what situation should I use a Private Set on a property versus making it a ReadOnly property? Take into consideration the two very simplistic examples below. First example: Public Class Person Private _name As String Public Property Name As String Get Return _name End Get Private Set(ByVal value As String) _name = value End Set End Property Public Sub WorkOnName() Dim txtInfo As TextInfo = _ Threading.Thread.CurrentThread.CurrentCulture.TextInfo Me.Name = txtInfo.ToTitleCase(Me.Name) End Sub End Class // ---------- public class Person { private string _name; public string Name { get { return _name; } private set { _name = value; } } public void WorkOnName() { TextInfo txtInfo = System.Threading.Thread.CurrentThread.CurrentCulture.TextInfo; this.Name = txtInfo.ToTitleCase(this.Name); } } Second example: Public Class AnotherPerson Private _name As String Public ReadOnly Property Name As String Get Return _name End Get End Property Public Sub WorkOnName() Dim txtInfo As TextInfo = _ Threading.Thread.CurrentThread.CurrentCulture.TextInfo _name = txtInfo.ToTitleCase(_name) End Sub End Class // --------------- public class AnotherPerson { private string _name; public string Name { get { return _name; } } public void WorkOnName() { TextInfo txtInfo = System.Threading.Thread.CurrentThread.CurrentCulture.TextInfo; _name = txtInfo.ToTitleCase(_name); } } They both yield the same results. Is this a situation where there's no right and wrong, and it's just a matter of preference?

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  • private class calling a method from its outer class

    - by oxinabox.ucc.asn.au
    Ok, so I have a class for a "Advanced Data Structure" (in this case a kinda tree) SO I implimented a Iterator as a private class with in it. So the iterator needs to implement a remove function to remove the last retuirned element. now my ADT already impliments a remove function, and in this case there is very little (thinking about it, i think nothing) to be gain by implimenting a different remove function for the iterator. so how do I go about calling the remove from my ADT sketch of my struture: public class ADT { ... private class ADT_Iterator impliments java.util.Itorator{ ... public void remove(){ //where I want to call the ADT's remove function from } ... public void remove( Object paramFoo ) { ... } ... } So just calling remove(FooInstance) won't work (will it?) and this.remove(FooInstance) is the same thing. what do i call? (and changign the name of the ADT's remove function is not an option, as that AD T has to meet an Interace wich I am note at liberty to change) I could make both of them call a removeHelper functon, I guess...

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  • class modifier issues in C# with "private" classes

    - by devoured elysium
    I had a class that had lots of methods: public class MyClass { public bool checkConditions() { return checkCondition1() && checkCondition2() && checkCondition3(); } ...conditions methods public void DoProcess() { FirstPartOfProcess(); SecondPartOfProcess(); ThirdPartOfProcess(); } ...process methods } I identified two "vital" work areas, and decided to extract those methods to classes of its own: public class MyClass { private readonly MyClassConditions _conditions = new ...; private readonly MyClassProcessExecution = new ...; public bool checkConditions() { return _conditions.checkConditions(); } public void DoProcess() { _process.DoProcess(); } } In Java, I'd define MyClassConditions and MyClassProcessExecution as package protected, but I can't do that in C#. How would you go about doing this in C#? Setting both classes as inner classes of MyClass? I have 2 options: I either define them inside MyClass, having everything in the same file, which looks confusing and ugly, or I can define MyClass as a partial class, having one file for MyClass, other for MyClassConditions and other for MyClassProcessExecution. Defining them as internal? I don't really like that much of the internal modifier, as I don't find these classes add any value at all for the rest of my program/assembly, and I'd like to hide them if possible. It's not like they're gonna be useful/reusable in any other part of the program. Keep them as public? I can't see why, but I've let this option here. Any other? Name it! Thanks

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  • Executes a function until it returns a nil, collecting its values into a list

    - by Baldur
    I got this idea from XKCD's Hofstadter comic; what's the best way to create a conditional loop in (any) Lisp dialect that executes a function until it returns NIL at which time it collects the returned values into a list. For those who haven't seen the joke, it's goes that Douglas Hofstadter's “eight-word” autobiography consists of only six words: “I'm So Meta, Even This Acronym” containing continuation of the joke: (some odd meta-paraprosdokian?) “Is Meta” — the joke being that the autobiography is actually “I'm So Meta, Even This Acronym Is Meta”. But why not go deeper? Assume the acronymizing function META that creates an acronym from a string and splits it into words, returns NIL if the string contains but one word: (meta "I'm So Meta, Even This Acronym") ? "Is Meta" (meta (meta "I'm So Meta, Even This Acronym")) ? "Im" (meta (meta (meta "I'm So Meta, Even This Acronym"))) ? NIL (meta "GNU is Not UNIX") ? "GNU" (meta (meta "GNU is Not UNIX")) ? NIL Now I'm looking for how to implement a function so that: (so-function #'meta "I'm So Meta, Even This Acronym") ? ("I'm So Meta, Even This Acronym" "Is Meta" "Im") (so-function #'meta "GNU is Not Unix") ? ("GNU is Not Unix" "GNU") What's the best way of doing this?

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  • Allen for Umbraco with location EXIF meta data

    - by Vizioz Limited
    The latest version of Allen for Umbraco has now hit the Apple App store, we have managed to add some nice improvements to this version that include:Storing location and direction information when photos are taken within the AppEmbedding EXIF data into the images when they are uploadBackground UploadingPull to refresh the media tree Location and DirectionBy default when the camera is used within an application the location and direction that the camera is pointing is not stored within the image meta data. We have now added full support so that this data is now added. We have added a setting which allows you to prevent this data from being uploaded to your website if you do not want the location data to be sent you can turn it off within Allen, Note: Please don't forget that location services do need to be turned on to allow the app to access the images in the phone's asset library.We have had quite a few ideas from users already for using this location data, including logging free parking in Denmark to geo-tagging holiday photos and linking the photos to Google street view. Embedding EXIF dataWe now embed all the meta data available on the iPhone into the image when it is uploaded to your server, this allows you to pull the data out and use it within your site. Have a look at Cultiv's Photo Meta Data package for great example code that allows you to automatically pull this data out and populate properties on your Umbraco media item.We slightly modified the source code of this package to allow the package to always extract the image data, as the default package requires a property to allow the data to be extracted, it's an easy change, if you get stuck add a comment to this post. Background UploadingIf you try to upload multiple images and need to start doing something else on your phone, you can now click the home button and the application will continue to upload your images in the background. As soon as it has finished you will receive a standard Apple notification. Pull to RefreshOur final enhancement has been to add "Pull to refresh" to the media trees, just pull the tree downwards with your finger and it will refresh, this is useful if you are adding items to your media tree while testing your site with Allen for Umbraco. Future enhancements.. your ideas?If you have any ideas for future enhancement feel free to add a comment below!

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  • (C#) iterate over read-only private collection member

    - by DGH
    I have a class which has two HashSet collections as private members. Other classes in my code would like to be able to iterate over those HashSets and read their contents. I don't want to write a standard getter because another class could still do something like myClass.getHashSet().Clear(); Is there any other way to expose the elements of my HashSets to iteration without exposing the reference to the HashSet itself? I'd love to be able to do this in a way that is compatible with for-each loops.

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  • Accessing "Public" methods from "Private" methods in javascript class

    - by mon4goos
    Is there a way to call "public" javascript functions from "private" ones within a class? Check out the class below: function Class() { this.publicMethod = function() { alert("hello"); } privateMethod = function() { publicMethod(); } this.test = function() { privateMethod(); } } Here is the code I run: var class = new Class(); class.test(); Firebug gives this error: publicMethod is not defined: [Break on this error] publicMethod(); Is there some other way to call publicMethod() within privateMethod() without accessing the global class variable [i.e. class.publicMethod()]?

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  • List of private iPhone APIs?

    - by diego nunes
    . . Hi there, everybody. . . I need to do an app to be distributed ad hoc (it doesn't need to go to the store) but I need to get the information about the "data usage" (gprs/3g traffic). It is available on the system, but there is no official API call to get that info. One app made it through Apple testing (it's called "Download Meter"), though, and I emailed the guys to see if they would share the call, but they were not in that mood. . . Is there any list of private APIs or anything like that? Does anyone have any ideas of how could I get that info? Again: the app doesn't need to go to the store, but I need to install it on stock iPhone (ad hoc will do). . Thanks.

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  • Keeping some files private

    - by user490895
    Hi, I was trying to create a directory of private files that could only be accessed when a user logs in. To do this, I used a folder outside the web directory, and then php to access it, if allowed. Here's an example: function display_movie($file){ printf("<video id='movie' width='960' height='416' controls='controls' onerror='fix()'> <source src='movie.php?file=%s' type='video/ogg; codecs=\"theora, vorbis\"'> </video>", rawurlencode($file)); } This works great for images, but breaks the media player. Also, I've only tested this locally on a Linux machine. Any ideas? Thanks.

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  • JScript.NET private variables

    - by Paul Podlipensky
    I'm wondering about JScript.NET private variables. Please take a look on the following code: import System; import System.Windows.Forms; import System.Drawing; var jsPDF = function(){ var state = 0; var beginPage = function(){ state = 2; out('beginPage'); } var out = function(text){ if(state == 2){ var st = 3; } MessageBox.Show(text + ' ' + state); } var addHeader = function(){ out('header'); } return { endDocument: function(){ state = 1; addHeader(); out('endDocument'); }, beginDocument: function(){ beginPage(); } } } var j = new jsPDF(); j.beginDocument(); j.endDocument(); Output: beginPage 2 header 2 endDocument 2 if I run the same script in any browser, the output is: beginPage 2 header 1 endDocument 1 Why it is so?? Thanks, Paul.

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  • ERROR: iPhone Private Frameworks "No such file or directory"

    - by WrightsCS
    I have added Private Frameworks To my project. When I build in DEVICE | RELEASE everything works fine and I am able to ldid -S the application and it successfully launches on my device. However, when trying to BUILD AND GO in Simulator, I get the error "No such file or directory" as indicated below: (I also get the error twice which is strange too.) Line Location HomeProfileViewController.h:10: error: BluetoothManager/BluetoothManager.h: No such file or directory Below are the project and build settings that I currently have, maybe someone can find a mistake and let me know, that would be awesome! PROJECT SETTINGS: PRIVATE_HEADERS_FOLDER_PATH = "/Developer/SDKs/iPhoneOS.sdk/Versions/iPhoneOS3.0.sdk/include" PUBLIC_HEADERS_FOLDER_PATH = "/Developer/SDKs/iPhoneOS.sdk/Versions/iPhoneOS3.0.sdk/include" USER_HEADER_SEARCH_PATHS = "/Developer/SDKs/iPhoneOS.sdk/Versions/iPhoneOS3.0.sdk/include" OTHER_CFLAGS = "-I/Developer/SDKs/iPhoneOS.sdk/Versions/iPhoneOS3.0.sdk/include-I/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/usr/include-I/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib/gcc/arm-apple-darwin9/4.0.1/include-F/System/Library/Frameworks-F/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/System/Library/Frameworks-F/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/System/Library/PrivateFrameworks-DMAC_OS_X_VERSION_MAX_ALLOWED=1050" TARGET BUILD SETTINGS: PRIVATE_HEADERS_FOLDER_PATH = "/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/System/Library/PrivateFrameworks" FRAMEWORK_SEARCH_PATHS = "$(inherited) $(SDKROOT)$(SYSTEM_LIBRARY_DIR)/PrivateFrameworks" USER_HEADER_SEARCH_PATHS = "/Developer/SDKs/iPhoneOS.sdk/Versions/iPhoneOS3.0.sdk/include/**" OTHER_CFLAGS = "-I/Developer/SDKs/iPhoneOS.sdk/Versions/iPhoneOS3.0.sdk/include-I/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/usr/include-I/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib/gcc/arm-apple-darwin9/4.0.1/include-F/System/Library/Frameworks-F/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/System/Library/Frameworks-F/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/System/Library/PrivateFrameworks-DMAC_OS_X_VERSION_MAX_ALLOWED=1050" Note: The quotation marks in the paths aren't actually in my project, I put them in so the site will syntax them better. Cydia

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