"Fossies" - the Fresh Open Source Software Archive

Member "SAOImageDS9/tcl8.6/doc/lrange.n" (13 Nov 2019, 2220 Bytes) of package /linux/misc/ds9.8.1.tar.gz:


Caution: As a special service "Fossies" has tried to format the requested manual source page into HTML format but links to other man pages may be missing or even erroneous. Alternatively you can here view or download the uninterpreted manual source code. A member file download can also be achieved by clicking within a package contents listing on the according byte size field.

lrange

NAME
SYNOPSIS
DESCRIPTION
EXAMPLES
SEE ALSO
KEYWORDS

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 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: does not always produce the same result as (although it often does for simple fields that are not enclosed in braces); it does, however, produce exactly the same results as

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