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Struct `std.array.RefAppender`

A version of Appender that can update an array in-place. It forwards all calls to an underlying appender implementation. Any calls made to the appender also update the pointer to the original array passed in.


						
				struct RefAppender(A)
				

				  
				

				if (isDynamicArray!A);

Constructors

Name	Description
`this`	Constructs a `RefAppender` with a given array reference. This does not copy the data. If the array has a larger capacity as determined by `arr.capacity`, it will be used by the appender.

Properties

Name	Type	Description
`capacity`[get]	`size_t`	Returns the capacity of the array (the maximum number of elements the managed array can accommodate before triggering a reallocation). If any appending will reallocate, `capacity` returns `0`.
`opSlice`[get]	`inout(ElementEncodingType!A)[]`

Methods

Name	Description
`opDispatch`	Wraps remaining `Appender` methods such as `put`.
`opOpAssign`	Appends `rhs` to the managed array.

Tip

Use the arrayPtr overload of appender for construction with type-inference.

Parameters

Name	Description
A	The array type to simulate

Example

int[] a = [1, 2];
auto app2 = appender(&a);
writeln(app2[]); // [1, 2]
writeln(a); // [1, 2]
app2 ~= 3;
app2 ~= [4, 5, 6];
writeln(app2[]); // [1, 2, 3, 4, 5, 6]
writeln(a); // [1, 2, 3, 4, 5, 6]

app2.reserve(5);
assert(app2.capacity >= 5);

Authors

Andrei Alexandrescu and Jonathan M Davis

License

Boost License 1.0.