Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
lrange(n)		     Tcl Built-In Commands		     lrange(n)

______________________________________________________________________________

NAME
       lrange -	Return one or more adjacent elements from a list

SYNOPSIS
       lrange list first last
______________________________________________________________________________

DESCRIPTION
       List  must  be  a  valid	Tcl list.  This	command	will return a new list
       consisting of elements first through last, inclusive.  The index	values
       first and last are interpreted the same as index	values for the command
       string index, supporting	simple index arithmetic	and  indices  relative
       to  the	end of the list.  If first is less than	zero, it is treated as
       if it were zero.	 If last is greater than or equal to the number	of el-
       ements  in the list, then it is treated as if it	were end.  If first is
       greater than last then an empty string is returned.  Note: "lrange list
       first  first"  does  not	always produce the same	result as "lindex list
       first" (although	it often does for simple fields	that are not  enclosed
       in braces); it does, however, produce exactly the same results as "list
       [lindex list first]"

EXAMPLES
       Selecting the first two elements:

	      %	lrange {a b c d	e} 0 1
	      a	b

       Selecting the last three	elements:

	      %	lrange {a b c d	e} end-2 end
	      c	d e

       Selecting everything except the first and last element:

	      %	lrange {a b c d	e} 1 end-1
	      b	c d

       Selecting a single element with lrange is not the same as doing so with
       lindex:

	      %	set var	{some {elements	to} select}
	      some {elements to} select
	      %	lindex $var 1
	      elements to
	      %	lrange $var 1 1
	      {elements	to}

SEE ALSO
       list(n),	 lappend(n),  lindex(n),  linsert(n),  llength(n), lsearch(n),
       lset(n),	lreplace(n), lsort(n), string(n)

KEYWORDS
       element,	list, range, sublist

Tcl				      7.4			     lrange(n)

NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | SEE ALSO | KEYWORDS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=lrange.tcl86&manpath=FreeBSD+13.1-RELEASE+and+Ports>

home | help