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lrange(n)                                   Tcl Built-In Commands                                  lrange(n)



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

SYNOPSIS
       lrange list first last
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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  elements  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)