1lreplace(n) Tcl Built-In Commands lreplace(n)
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8 lreplace - Replace elements in a list with new elements
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11 lreplace list first last ?element element ...?
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16 lreplace returns a new list formed by replacing one or more elements of
17 list with the element arguments. first and last specify the first and
18 last index of the range of elements to replace. 0 refers to the first
19 element of the list, and end (or any abbreviation of it) may be used to
20 refer to the last element of the list. If list is empty, then first
21 and last are ignored.
22 If first is less than zero, it is considered to refer to the first ele‐
24 ment of the list. For non-empty lists, the element indicated by first
25 must exist.
26 If last is less than zero but greater than first, then any specified
28 elements will be prepended to the list. If last is less than first
29 then no elements are deleted; the new elements are simply inserted
30 before first.
31 The element arguments specify zero or more new arguments to be added to
33 the list in place of those that were deleted. Each element argument
34 will become a separate element of the list. If no element arguments
35 are specified, then the elements between first and last are simply
36 deleted. If list is empty, any element arguments are added to the end
37 of the list.
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40 Replacing an element of a list with another:
41 % lreplace {a b c d e} 1 1 foo
42 a foo c d e
43 Replacing two elements of a list with three:
45 % lreplace {a b c d e} 1 2 three more elements
46 a three more elements d e
47 Deleting the last element from a list in a variable:
49 % set var {a b c d e}
50 a b c d e
51 % set var [lreplace $var end end]
52 a b c d
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56 list(n), lappend(n), lindex(n), linsert(n), llength(n), lsearch(n), │
57 lset(n), lrange(n), lsort(n)
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61 element, list, replace
62Tcl 7.4 lreplace(n)