Understanding Apple’s Programming Tools
Wallace Wang · Apress eBooks · 2011
To write a program, you need at least two tools: an editor and a compiler. An editor acts like a word processor and lets you write instructions using a programming language such as Objective-C. A compiler converts your instructions (called code ) and compiles (or translates) them into a language that computers can understand, which is called machine code . When you buy a program, that program is stored in a file that contains nothing but machine code. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.