Breaking circular references while maintaining access to attributes (Objective-c) -


मेरे पास दो वर्ग ( test1 और test2 ) हैं जो प्रत्येक एक संपत्ति (क्रमशः test2 और test1 क्रमशः) दूसरे वर्ग के एक उदाहरण की ओर इशारा करते हुए इसका अर्थ है कि Test1.m को Test2.h आयात करना चाहिए और Test2.m को Test1.h आयात करना होगा। .h फाइलों में एक आगे घोषणा भी होनी चाहिए। दुर्भाग्य से, इसका मतलब है कि मैं test2 और test1 के गुणों को डॉट नॉटेशन के साथ एक्सेस नहीं कर सकता। मैं उन्हें संदेश पास करने के साथ पहुंच सकता हूं, लेकिन मुझे या तो नोटेशन का उपयोग करने में सक्षम होना चाहिए। मैं इस समस्या को कैसे सुलझा सकता हूं?

संबंधित

टेस्ट 1 

  // test1.h @ वर्ग परीक्षण 2; @ इंटरफेस टेस्ट 1: एनएसओबीज {टेस्ट 2 * टेस्ट 2; Int a1; } @प्रॉपर्टी (नॉनैटोमिक, बरकरार) टेस्ट 2 * टेस्ट 2; - (शून्य) मेथ 1; @end //Test1.m #import "Test1.h" #import "Test2.h" @ इप्लिमेंटेशन टेस्ट 1 @ सिंटिसाइज़ टेस्ट 2; - (शून्य) meth1 {test2.a2; // किसी संरचना या संघ में कुछ 'सदस्य' के लिए अनुरोध} @end

Test2

<पूर्व> // Test2.h #import & lt; फाउंडेशन / फाउंडेशन। एच & gt; @ वर्ग टेस्ट 1; @ इंटरफेस टेस्ट 2: एनएसओबीज {टेस्ट 1 * टेस्ट 1; इंट ए 2; } @ प्रॉपर्टी (नॉनैटोमिक, असाइन करें) टेस्ट 1 * टेस्ट 1; - (शून्य) मेथ 2; @end //Test2.m #import "test2.h" #import "test1.h" @ कार्यान्वयन टेस्ट 2 @ संश्लेषण करें test1; - (शून्य) meth2 {test1.a1; // किसी एक संरचना या संघ में नहीं 'सदस्य' के लिए अनुरोध} @end

गुणों को जोड़ना और a1 & amp; synthesizing; ए 2 की मदद लगता है।


Comments

Post a Comment

Popular posts from this blog

c++ - QtQuick: QQmlApplicationEngine failed to load component qrc:/main.qml:23 Invalid attached object assignment -

Looking at my thoughts below, am I barking the wrong tree? Or in the information given below, am I misusing the Qt API to get an error in the title? I'm trying to modify the sample to work with the default coefficic project generated from Qt Creator 3.3.0 (OpenSource). Qt 5.4.0 (GCC 4.6.1, 64bit) Based on. The first thing to look at after the code is that I stand by: The sample uses the main.cpp: qmlRegisterType & lt ; Squircle & gt; ("OpenGLUARMM", 1, 0, "Squircle"); QQuickView view; View.setResizeMode (QQuickView :: SizeRootObjectToView); View.setSource (QUrl ("QRC: ///scenegraph/openglunderqml/main.qml")); View.show (); Some name changes in my name. CPP qmlRegisterType & lt; Menuscreen & gt; ("OpenGLUnderQML", 1, 0, "Main Screen"); QQmlApplicationEngine engine; Engine.load (QUrl (QStringLiteral ("QRC: /main.qml"))); I'm not sure that the difference in using QQmlApplicationEngine...
Read more

sql - dynamically varied number of conditions in the 'where' statement using LINQ -

I am using my first project LINQ (in mvc), so maybe there's something very simple that I remember. However, a day of searching and experimenting does not work, so it works. I am trying to write a LINQ query (Linux to SQL) in which in many cases where the statement is different from an OR or an AND. We do not know how many conditions are going in the query till runtime. This search is for filter control, where the user can choose multiple criteria for filtering. Select from table where table.col = 1 or table.col = 2 or table.col = 7 .... 'Other number of conditions Before I just create the SQL query as a string, while looping over all the situations. However, it seems that there should be a good way to do this in LINQ. I tried to use Expression trees, but they had a second thought for this moment on my head, where the lambda function was to be executed inside the statement such as: values ​​for matchingRows = matchingRows for each value Where (function (row) row.c...
Read more

asp.net - getting a value of selected radiobutton in LoadViewState -

Can I get the value of a selected radio button in the LoadViewState event of WebControl and how? All components are generated in codebehind, so I have those controls: Radiobutton list RLL; LISTIME leon; List liTwo; At this time I was stuck on that the overloaded loadviolet is not being implemented protected override zero load vivestat (object o) {action = Rbl.SelectedValue; Verb 2 = rll Selected item. value; Base.LoadViewState (O); } You also need to override the SaveViewState method. Radio button AFAIK has problems in saving their selected state.
Read more