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Chapter 17. Functions
17. Functions
Introduction 511
17.1 User-Defined Functions 512
17.1.1 Defining a Function 512 :=, SyntaxInformation, InverseFunction, Identity, etc.
17.1.2 Piecewise-Defined Functions 516 Piecewise, PiecewiseExpand
17.1.3 Implicit Functions 518 ContourPlot
17.1.4 Pure Functions and Scoping Constructs 520 Function, Module, With, Block
17.2.1 Tracing 523 Trace, On, Off
17.2.2 Debugging 524
17.2.3 Compiling 528 Compile
17.2.4 Attributes 530 Attributes, SetAttributes, ClearAttributes
17.3 Contexts and Packages 531
17.3.1 What Is a Context? 531 $ContextPath, $Context, Context, Contexts, Names
17.3.2 Forgetting to Load: Once Again 533
17.3.3 Writing a Package 535 BeginPackage, EndPackage, Begin, End, (* *)
17.3.4 Handling Options and Messages 538 Options, OptionsPattern, FilterRules, Message, etc.
