lrange

lrange(3tcl)                  Tcl Built-In Commands                 lrange(3tcl)



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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(3tcl), lappend(3tcl), lindex(3tcl), linsert(3tcl), llength(3tcl),
       lsearch(3tcl), lset(3tcl), lreplace(3tcl), lsort(3tcl), string(3tcl)

KEYWORDS
       element, list, range, sublist



Tcl                                    7.4                          lrange(3tcl)