The Loop Facility
- destructuring list
- A list whose individual elements can be assigned a value from a corresponding list of values.
- exclusive limit
- A limit that does not include its endpoints.
- inclusive limit
- A limit that includes its endpoints.
- The process of executing an expression or a series of expressions one or more times.
- A symbol preceded by a colon (
:value, and so forth).
- lexical scope
- A scope that allows forms to be accessed only by expressions that lie textually within the same construct in which the forms were established.
- An iterative series of expressions.
- loop body
- The part of the expanded loop form that contains forms that are executed during iteration, such as iteration termination tests and variable stepping.
- loop epilogue
- The part of the expanded loop form that contains forms that are executed after iteration terminates, such as code to return values from the loop.
- Loop Facility
- An extensible iteration mechanism that provides you with a variety of ways to iterate and to accumulate values in a loop.
- loop keywords
- Symbols that are recognized by the Loop Facility and that provide such capabilities as controlling the direction of iteration, accumulating values inside the body of a loop, and evaluating expressions that precede or follow the loop body.
- loop prologue
- The part of the expanded loop form that contains forms that are executed before iteration begins, such as initial bindings of loop variables.
- macro expansion
- The process of evaluating a macro.
- optional parameter
- A symbol that is not required for a function to work properly; in the syntactic description, the symbol
&optional precedes the optional parameter.
- parallel initialization
- A process whereby a set of expressions is evaluated and the results are bound to the respective variables simultaneously.
- A symbol whose value is determined by the arguments that you supply when you invoke a function.
- rest parameter
- A construct that allows a function to have an unspecified number of arguments; it is indicated by the symbol
&rest in the syntactic description.
- An ordered set of elements.
- sequential initialization
- A process whereby one variable is assigned a value before the expression that follows it is evaluated.
- The process of assigning a variable the next item in a series of items.
- Standardized grammatical rules and patterns.
The Loop Facility - 9 SEP 1996
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