# SystemElementContainer

`class SystemElementContainer` — inherits [SystemElement](../classes/SystemElement.md)

Defined in [syselmts.hpp:32](../../../../src/system/syselmts.hpp#L32)

A container for managing system elements of type T.

## Public Types

### `using SystemElementContainer< T >::MapType = unordered_map<string, T *>`

📍 [syselmts.hpp:35](../../../../src/system/syselmts.hpp#L35)

### `using SystemElementContainer< T >::iterator = typename MapType::iterator`

📍 [syselmts.hpp:36](../../../../src/system/syselmts.hpp#L36)

### `using SystemElementContainer< T >::const_iterator = typename MapType::const_iterator`

📍 [syselmts.hpp:37](../../../../src/system/syselmts.hpp#L37)

## Protected Attributes

### `unsigned int iter_count`

📍 [syselmts.hpp:40](../../../../src/system/syselmts.hpp#L40)

### `MapType content`

📍 [syselmts.hpp:41](../../../../src/system/syselmts.hpp#L41)

## Protected Functions

### `void add(MapType el_content)`

📍 [syselmts.hpp:47](../../../../src/system/syselmts.hpp#L47)

Adds elements from a map to the container.

**Parameters**

- `el_content` — Map of elements to add.

## Public Functions

### `SystemElementContainer(string name)`

📍 [syselmts.hpp:60](../../../../src/system/syselmts.hpp#L60)

Constructor for an empty container.

**Parameters**

- `` — Name of the container.

### `SystemElementContainer(string name, vector< T * > elements)`

📍 [syselmts.hpp:67](../../../../src/system/syselmts.hpp#L67)

Constructor with initial elements.

**Parameters**

- `` — Name of the container.
- `elements` — Vector of elements to add.

### `void add(string name, T *element)`

📍 [syselmts.hpp:78](../../../../src/system/syselmts.hpp#L78)

Adds a single element to the container with a given name.

**Parameters**

- `` — Name of the element to add.
- `element` — Pointer to the element to add.

**Throws**

- `runtime_error` — If the element's name is empty or already exists.

### `void add(T *element)`

📍 [syselmts.hpp:96](../../../../src/system/syselmts.hpp#L96)

Adds a single element to the container.

**Parameters**

- `element` — Pointer to the element to add.

**Throws**

- `runtime_error` — If the element's name is empty or already exists.

### `bool exists(string name)`

📍 [syselmts.hpp:106](../../../../src/system/syselmts.hpp#L106)

Checks if an element exists in the container.

**Parameters**

- `` — Name of the element to check.

**Returns** True if the element exists, false otherwise.

### `void add(SystemElementContainer< T > *elements)`

📍 [syselmts.hpp:123](../../../../src/system/syselmts.hpp#L123)

Adds elements from another container.

**Parameters**

- `elements` — Pointer to another container.

### `void add(vector< T * > elements)`

📍 [syselmts.hpp:132](../../../../src/system/syselmts.hpp#L132)

Adds multiple elements from a vector.

**Parameters**

- `elements` — Vector of elements to add.

### `T * get(string name)`

📍 [syselmts.hpp:146](../../../../src/system/syselmts.hpp#L146)

Retrieves an element by its name.

**Parameters**

- `` — Name of the element to retrieve.

**Returns** Pointer to the element.

**Throws**

- `runtime_error` — If the element is not found.

### `T * merge(string name)`

📍 [syselmts.hpp:164](../../../../src/system/syselmts.hpp#L164)

Merges an element by retrieving it or creating a new one if it doesn't exist.

**Parameters**

- `` — Name of the element.

**Returns** Pointer to the merged or newly created element.

### `size_t size() const`

📍 [syselmts.hpp:178](../../../../src/system/syselmts.hpp#L178)

### `iterator begin()`

📍 [syselmts.hpp:184](../../../../src/system/syselmts.hpp#L184)

Returns an iterator to the beginning of the container.

**Returns** Iterator to the beginning.

### `iterator end()`

📍 [syselmts.hpp:190](../../../../src/system/syselmts.hpp#L190)

Returns an iterator to the end of the container.

**Returns** Iterator to the end.

### `const_iterator begin() const`

📍 [syselmts.hpp:196](../../../../src/system/syselmts.hpp#L196)

Returns a constant iterator to the beginning of the container.

**Returns** Constant iterator to the beginning.

### `const_iterator end() const`

📍 [syselmts.hpp:202](../../../../src/system/syselmts.hpp#L202)

Returns a constant iterator to the end of the container.

**Returns** Constant iterator to the end.

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