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man pages section 1: User Commands

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Updated: Wednesday, February 10, 2021

lrange (1t)


lrange - Return one or more adjacent elements from a list


lrange list first last


lrange(1t)                   Tcl Built-In Commands                  lrange(1t)


       lrange - Return one or more adjacent elements from a list

       lrange list first last

       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]"

       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

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

       See attributes(7) for descriptions of the following attributes:

       |Availability   | runtime/tcl-8    |
       |Stability      | Uncommitted      |
       list(n),  lappend(n),  lindex(n),  linsert(n),  llength(n), lsearch(n),
       lset(n), lreplace(n), lsort(n), string(n)

       element, list, range, sublist

       This    software    was    built    from    source     available     at
       https://github.com/oracle/solaris-userland.    The  original  community
       source was downloaded from  http://prdownloads.sourceforge.net/tcl/tcl-

       Further information about this software can be found on the open source
       community website at https://www.tcl.tk/.

Tcl                                   7.4                           lrange(1t)