c의 for나 while과 비슷한 반복문 키워드로
loop, dotimes, dolist 등이 있다.
xlisp 설명서 발췌
loop, dotimes, dolist 등이 있다.
| (let ((<var1> <init1>) (<var2> <init2>) …)
<body> )
– Declares local variables. It is best to declare variables before using them. (dotimes (<counter> <limit> <result>) <body>)
(let ((sum 0))
(dotimes (i 10 sum) (setq sum (+ sum i))) ) => 45
[링크 : http://logic.stanford.edu/classes/cs157/2004/programming/lisp.pdf] |
xlisp 설명서 발췌
| Looping Constructs basic looping form
(loop <expr>...)
fsubr
<expr> the body of the loop
returns never returns (must use non-local exit, such as return)
general looping form
(do (<binding>...) (<texpr> <rexpr>...) <expr>...)
(do* (<binding>...) (<texpr> <rexpr>...) <expr>...)
fsubr. do binds simultaneously, do* binds sequentially
<binding> the variable bindings each of which is either:
1) a symbol (which is initialized to NIL)
2) a list of the form: (<sym> <init> [<step>])
where:
<sym> is the symbol to bind
<init> the initial value of the symbol
<step> a step expression
<texpr> the termination test expression
<rexpr> result expressions (the default is NIL)
<expr> the body of the loop (treated like an implicit prog)
returns the value of the last result expression
loop through a list
(dolist (<sym> <expr> [<rexpr>]) <expr>...)
fsubr
<sym> the symbol to bind to each list element
<expr> the list expression
<rexpr> the result expression (the default is NIL)
<expr> the body of the loop (treated like an implicit prog)
returns the result expression
loop from zero to n-1
(dotimes (<sym> <expr> [<rexpr>]) <expr>...)
fsubr
<sym> the symbol to bind to each value from 0 to n-1
<expr> the number of times to loop (a fixnum)
<rexpr> the result expression (the default is NIL)
<expr> the body of the loop (treated like an implicit prog)
returns the result expression |
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