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__Builtin Class:__**<vector>**-
A vector is a simple 1-dimensional array of Scheme objects.
You can access its element by index in constant time.
Once created, a vector can't be resized.
Class

`<vector>`

inherits`<sequence>`

and you can use various generic functions such as`map`

and`fold`

on it. See section 9.3`gauche.collection`

- Collection framework, and See section 9.18`gauche.sequence`

- Sequence framework.If you keep only a homogeneous numeric type, you may be able to use SRFI-4 homogenous vectors (See section 10.4

`srfi-4`

- Homogeneous vectors).

__Function:__**vector?***obj*- [R5RS]
Returns
`#t`

if`obj`is a vector,`#f`

otherwise.

__Function:__**make-vector***k &optional fill*- [R5RS]
Creates and returns a vector with length
`k`. If optional argument`fill`is given, each element of the vector is initialized by it. Otherwise, the initial value of each element is undefined.

__Function:__**vector***obj ...*- [R5RS]
Creates a vector whose elements are
`obj`....

__Function:__**vector-length***vector*- [R5RS]
Returns the length of a vector
`vector`.With

`gauche.collection`

module, you can also use a method`size-of`

.

__Function:__**vector-ref***vector k &optional fallback*- [R5RS+]
Returns
`k`-th element of vector`vector`.By default,

`vector-ref`

signals an error if`k`is negative, or greater than or equal to the length of`vector`. However, if an optional argument`fallback`is given, it is returned for such case. This is an extension of Gauche.With

`gauche.sequence`

module, you can also use a method`ref`

.

__Function:__**vector-set!***vector k obj*- [R5RS]
Sets
`k`-th element of the vector`vector`to`obj`. It is an error if`k`is negative or greater than or equal to the length of`vector`.With

`gauche.sequence`

module, you can also use a setter method of`ref`

.

__Function:__**vector->list***vector &optional start end*__Function:__**list->vector***list*- [R5RS+]
Converts a vector to a list, or vice versa.
The optional

`start`and`end`argument of`vector->list`

limits the range of the`vector`to be retrieved.(vector->list '#(1 2 3 4 5)) => (1 2 3 4 5) (list->vector '(1 2 3 4 5)) => #(1 2 3 4 5) (vector->list '#(1 2 3 4 5) 2 4) => (3 4)

With

`gauche.collection`module, you can use`(coerce-to <list>`

and`vector`)`(coerce-to <vector>`

as well.`list`)

__Function:__**vector-fill!***vector fill &optional start end*- [R5RS+]
Sets all elements in a vector
`vector`to`fill`.Optional

`start`and`end`limits the range of effect between`start`-th index (inclusive) to`end`-th index (exclusive).`Start`defaults to zero, and`end`defaults to the length of`vector`. These optional arguments are Gauche's extension.

__Function:__**vector-copy***vector &optional start end*- Copies a vector
`vector`. Optional`start`and`end`arguments can be used to limit the range of`vector`to be copied.(vector-copy '#(1 2 3 4 5)) => #(1 2 3 4 5) (vector-copy '#(1 2 3 4 5) 2 4) => #(3 4)

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