Initial commit (5b7d10a1) · Commits · examples / C Plus Plus Memory Management

Chapter 1/0101_code.cpp

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Changes for Chapter 1/0101_code.cpp: 78 added lines, 0 removed lines.
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		// 0101.cpp

		//-- Not good. It's wrong.

		char BufferClass::getLastChar()
		{
		return *(this->m_buffer + strlen(this->m_buffer));
		}

		//-- Better, but still not good: it's not wrong, but it's not right.

		char BufferClass::getLastChar()
		{
		return *(this->m_buffer + strlen(this->m_buffer) - 1);
		}

		//------------------------------

		// It leaks

		int Portfolio::finalTally(Asset &asset)
		{
		AssetCalculator *pCalc = new AssetCalculator(asset);
		return pCalc->finalTally();
		}

		// Now you see it--now you don't.

		char *Editor::extractClip(size_t startOffset, size_t endOffset)
		{
		char szclip[MAX_BUFFER_SIZE] = {0};
		strcpy(szClip,GetClipSection(startOffset,endOffset));
		return szClip;
		}

		//------------------------------

		void SomeClass:method()
		{
		Asset *pAsset = new Asset();

		if (externalCondition()) {
		.
		.
		.
		.
		if (ruhRoh()) {
		delete pAsset;
		}
		} else {
		.
		.
		.
		}

		int iResult = pAsset->getValue();

		delete pAsset;

		return iResult;
		}

		//------------------------------

		// In a debug build items get initialized; in release builds, they don't.

		//------------------------------

		int i;

		for(i = 0; i < iMax; ++i) {
		if (exitCondition(i)) {
		break;
		}
		}

		printf("Found item at reference #%d\n",i);

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Changes for Chapter 1/example_1.cpp: 35 added lines, 0 removed lines.
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		MyClass myInstance = new myClass(); //C#

		MyClass *myInstance = new MyClass(); //C++


		void MyMethod(SomeResrouceType resource)
		{
		MyClass myInstance = new MyClass(resource);
		}

		void MyMethod(SomeResourceType resource)
		{
		MyClass *myInstance = new MyClass(resource);
		}

		void MyMethod(SomeResourceType resource)
		{
		MyClass *myInstance = new MyClass(resource);
		.
		.
		.
		delete myInstance;
		}

		void MyMethod(SomeResourceType resource)
		{
		MyClass myInstance(resource);
		// No need to clean up
		}

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Changes for Chapter 1/stl_wrap.cpp: 29 added lines, 0 removed lines.
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		void MyMethod(SomeResourceType resource)
		{
		MyClass *myInstance = new MyClass(resource);
		.
		.
		.
		delete myInstance;
		}

		void MyMethod(SomeResourceType &resource)
		{
		auto_ptr<MyClass> my Instance (new MyInstance(resource));
		.
		.
		.
		}

		void MyMethod(SomeResourceType resource)
		{
		MyClass myInstance(resource);
		// No need to clean up
		}

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Changes for Chapter 10/No Work Files.rtf: 7 added lines, 0 removed lines.
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		{\rtf1\ansi\ansicpg1252\cocoartf1038\cocoasubrtf350
		{\fonttbl\f0\fswiss\fcharset0 Helvetica;}
		{\colortbl;\red255\green255\blue255;}
		\margl1440\margr1440\vieww9000\viewh8400\viewkind0
		\pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\ql\qnatural\pardirnatural

		\f0\fs24 \cf0 No work files for this lesson...}
		No newline at end of file

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Changes for Chapter 2/lastIndexOf.cpp: 12 added lines, 0 removed lines.
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		template <class T> int lastIndexOf(const T *pData,size_t extent,T target)
		{
		size_t uRet = extent - 1;
		const T *pTest = pData + uRet;
		while (pTest >= pData) {
		if (*pTest-- == target) {
		return static_cast<int>(uRet);
		}
		--uRet;
		}
		return -1;
		}
		No newline at end of file