Local Constants (Mathematica Tutorial)

Defining local constants. Module allows you to set up local variables, to which you can assign values and then change them. Often, however, all you really need are local ...

With (Built-in Mathematica Symbol)

With[{x = x_0, y = y_0, ...}, expr] specifies that in expr occurrences of the symbols x, y, ... should be replaced by x_0, y_0, ....

Procedural Programming (Mathematica Guide)

Mathematica stands out from traditional computer languages in supporting many programming paradigms. Procedural programming is the only paradigm available in languages like C ...

Package Bulletproofing (Mathematica Guide)

Mathematica makes it easy to "bulletproof" packages, and prevent features of their environment from affecting their internal operation.

CompoundExpression (Built-in Mathematica Symbol)

expr_1; expr_2; ... evaluates the expr_i in turn, giving the last one as the result.

RuleDelayed (Built-in Mathematica Symbol)

lhs :> rhs or lhs :> rhs represents a rule that transforms lhs to rhs, evaluating rhs only after the rule is used.

Block (Built-in Mathematica Symbol)

Block[{x, y, ...}, expr] specifies that expr is to be evaluated with local values for the symbols x, y, .... Block[{x = x_0, ...}, expr] defines initial local values for x, ...

MatchLocalNames (Built-in Mathematica Symbol)

MatchLocalNames is an option for Trace and related functions that specifies whether symbols such as x should match symbols with local names of the form x$nnn.

Defining Variables and Functions (Mathematica Guide)

The symbolic language paradigm of Mathematica takes the concept of variables and functions to a new level. In Mathematica a variable can not only stand for a value, but can ...

Condition (Built-in Mathematica Symbol)

patt /; test is a pattern which matches only if the evaluation of test yields True. lhs :> rhs /; test represents a rule which applies only if the evaluation of test yields ...