gistfile1.txt

Memory management in C

	void *malloc(size_t size);
		Allocates size bytes of memory

	void *calloc(size_t count, size_t size);
		Allocate count times size

	void *realloc(void *ptr, size_t size);
		malloc's size, copies memory, frees old pointer
		If the new size is the same as the old size, returns the old pointer

	free(void *ptr);
		Returns memory to the system

	There is no reference counting!
 
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Objective-C

	Strict superset of C (all valid C is valid Objective-C)

	Shuns the use of primitives (arrays are objects, numbers are wrapped in objects)

	Not even close to as fast as C

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Accelerate framework

	BLAS - Basic Linear Algebra Subprograms
		First published in 1979
		Fortran - 5 character names!
		http://www.netlib.org/blas/
		http://en.wikipedia.org/wiki/Basic_Linear_Algebra_Subprograms

	ATLAS - Automatically Tuned Linear Algebra Software
		"Portable BLAS"
		http://en.wikipedia.org/wiki/Automatically_Tuned_Linear_Algebra_Software

	LAPACK - Linear Algebra PACKage
		http://www.netlib.org/lapack/
		http://www.physics.orst.edu/~rubin/nacphy/lapack/
		http://www. website where you can buy books that is named after a jungle .com/LAPACK-Users-Guide-Software-Environments/dp/0898714478

	vImage - Image manipulation

	vDSP - Digital Signal Processing

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Why care about 1/10th of a second?

	Processors are machines for turning electrons into heat

	Cell phones have relatively poor batteries (especially the iPhone 4S, just saying..)