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Array¶

A built-in data structure that holds a sequence of elements.

Description¶

An array data structure that can contain a sequence of elements of any type. Elements are accessed by a numerical index starting at 0. Negative indices are used to count from the back (-1 is the last element, -2 is the second to last, etc.).

Example:

var array = ["One", 2, 3, "Four"]
print(array[0]) # One.
print(array[2]) # 3.
print(array[-1]) # Four.
array[2] = "Three"
print(array[-2]) # Three.

var array = new Godot.Collections.Array{"One", 2, 3, "Four"};
GD.Print(array[0]); // One.
GD.Print(array[2]); // 3.
GD.Print(array[array.Count - 1]); // Four.
array[2] = "Three";
GD.Print(array[array.Count - 2]); // Three.

Arrays can be concatenated using the + operator:

var array1 = ["One", 2]
var array2 = [3, "Four"]
print(array1 + array2) # ["One", 2, 3, "Four"]

// Array concatenation is not possible with C# arrays, but is with Godot.Collections.Array.
var array1 = new Godot.Collections.Array{"One", 2};
var array2 = new Godot.Collections.Array{3, "Four"};
GD.Print(array1 + array2); // Prints [One, 2, 3, Four]

Note: Arrays are always passed by reference. To get a copy of an array that can be modified independently of the original array, use duplicate.

Note: Erasing elements while iterating over arrays is not supported and will result in unpredictable behavior.

Constructors¶

Array	Array ( )
Array	Array ( Array base, int type, StringName class_name, Variant script )
Array	Array ( Array from )
Array	Array ( PackedByteArray from )
Array	Array ( PackedColorArray from )
Array	Array ( PackedFloat32Array from )
Array	Array ( PackedFloat64Array from )
Array	Array ( PackedInt32Array from )
Array	Array ( PackedInt64Array from )
Array	Array ( PackedStringArray from )
Array	Array ( PackedVector2Array from )
Array	Array ( PackedVector3Array from )

Methods¶

bool	all ( Callable method ) const
bool	any ( Callable method ) const
void	append ( Variant value )
void	append_array ( Array array )
void	assign ( Array array )
Variant	back ( ) const
int	bsearch ( Variant value, bool before=true ) const
int	bsearch_custom ( Variant value, Callable func, bool before=true ) const
void	clear ( )
int	count ( Variant value ) const
Array	duplicate ( bool deep=false ) const
void	erase ( Variant value )
void	fill ( Variant value )
Array	filter ( Callable method ) const
int	find ( Variant what, int from=0 ) const
Variant	front ( ) const
int	get_typed_builtin ( ) const
StringName	get_typed_class_name ( ) const
Variant	get_typed_script ( ) const
bool	has ( Variant value ) const
int	hash ( ) const
int	insert ( int position, Variant value )
bool	is_empty ( ) const
bool	is_read_only ( ) const
bool	is_same_typed ( Array array ) const
bool	is_typed ( ) const
void	make_read_only ( )
Array	map ( Callable method ) const
Variant	max ( ) const
Variant	min ( ) const
Variant	pick_random ( ) const
Variant	pop_at ( int position )
Variant	pop_back ( )
Variant	pop_front ( )
void	push_back ( Variant value )
void	push_front ( Variant value )
Variant	reduce ( Callable method, Variant accum=null ) const
void	remove_at ( int position )
int	resize ( int size )
void	reverse ( )
int	rfind ( Variant what, int from=-1 ) const
void	shuffle ( )
int	size ( ) const
Array	slice ( int begin, int end=2147483647, int step=1, bool deep=false ) const
void	sort ( )
void	sort_custom ( Callable func )

Operators¶

bool	operator != ( Array right )
Array	operator + ( Array right )
bool	operator < ( Array right )
bool	operator <= ( Array right )
bool	operator == ( Array right )
bool	operator > ( Array right )
bool	operator >= ( Array right )
Variant	operator [] ( int index )

Constructor Descriptions¶

Array Array ( )

Constructs an empty Array.

Array Array ( Array base, int type, StringName class_name, Variant script )

Creates a typed array from the base array.

Array Array ( Array from )

Returns the same array as from. If you need a copy of the array, use duplicate.

Array Array ( PackedByteArray from )

Constructs an array from a PackedByteArray.

Array Array ( PackedColorArray from )

Constructs an array from a PackedColorArray.

Array Array ( PackedFloat32Array from )

Constructs an array from a PackedFloat32Array.

Array Array ( PackedFloat64Array from )

Constructs an array from a PackedFloat64Array.

Array Array ( PackedInt32Array from )

Constructs an array from a PackedInt32Array.

Array Array ( PackedInt64Array from )

Constructs an array from a PackedInt64Array.

Array Array ( PackedStringArray from )

Constructs an array from a PackedStringArray.

Array Array ( PackedVector2Array from )

Constructs an array from a PackedVector2Array.

Array Array ( PackedVector3Array from )

Constructs an array from a PackedVector3Array.

Method Descriptions¶

bool all ( Callable method ) const

Calls the provided Callable on each element in the array and returns true if the Callable returns true for all elements in the array. If the Callable returns false for one array element or more, this method returns false.

The callable's method should take one Variant parameter (the current array element) and return a boolean value.

func _ready():
    print([6, 10, 6].all(greater_than_5))  # Prints True (3/3 elements evaluate to `true`).
    print([4, 10, 4].all(greater_than_5))  # Prints False (1/3 elements evaluate to `true`).
    print([4, 4, 4].all(greater_than_5))  # Prints False (0/3 elements evaluate to `true`).
    print([].all(greater_than_5))  # Prints True (0/0 elements evaluate to `true`).

    print([6, 10, 6].all(func(number): return number > 5))  # Prints True. Same as the first line above, but using lambda function.

func greater_than_5(number):
    return number > 5

See also all, filter, map and reduce.

Note: Unlike relying on the size of an array returned by filter, this method will return as early as possible to improve performance (especially with large arrays).

Note: For an empty array, this method always returns false.

void append ( Variant value )

Appends an element at the end of the array (alias of push_back).

void append_array ( Array array )

Appends another array at the end of this array.

var array1 = [1, 2, 3]
var array2 = [4, 5, 6]
array1.append_array(array2)
print(array1) # Prints [1, 2, 3, 4, 5, 6].

void assign ( Array array )

Assigns elements of another array into the array. Resizes the array to match array. Performs type conversions if the array is typed.

Variant back ( ) const

Returns the last element of the array. Prints an error and returns null if the array is empty.

Note: Calling this function is not the same as writing array[-1]. If the array is empty, accessing by index will pause project execution when running from the editor.

int bsearch ( Variant value, bool before=true ) const

Finds the index of an existing value (or the insertion index that maintains sorting order, if the value is not yet present in the array) using binary search. Optionally, a before specifier can be passed. If false, the returned index comes after all existing entries of the value in the array.

Note: Calling bsearch on an unsorted array results in unexpected behavior.

int bsearch_custom ( Variant value, Callable func, bool before=true ) const

Finds the index of an existing value (or the insertion index that maintains sorting order, if the value is not yet present in the array) using binary search and a custom comparison method. Optionally, a before specifier can be passed. If false, the returned index comes after all existing entries of the value in the array. The custom method receives two arguments (an element from the array and the value searched for) and must return true if the first argument is less than the second, and return false otherwise.

Note: Calling bsearch_custom on an unsorted array results in unexpected behavior.

void clear ( )

Clears the array. This is equivalent to using resize with a size of 0.

int count ( Variant value ) const

Returns the number of times an element is in the array.

Array duplicate ( bool deep=false ) const</