Anjuta Developers Reference Manual: IAnjutaIterable

## IAnjutaIterable IAnjutaIterable — Implemented by objects that can iterate |

## Stability Level

Unstable, unless otherwise indicated

## Functions

GQuark | ianjuta_iterable_error_quark ()
void | ianjuta_iterable_assign ()
IAnjutaIterable * | ianjuta_iterable_clone ()
gint | ianjuta_iterable_compare ()
gint | ianjuta_iterable_diff ()
gboolean | ianjuta_iterable_first ()
void | ianjuta_iterable_foreach ()
gint | ianjuta_iterable_get_length ()
gint | ianjuta_iterable_get_position ()
gboolean | ianjuta_iterable_last ()
gboolean | ianjuta_iterable_next ()
gboolean | ianjuta_iterable_previous ()
gboolean | ianjuta_iterable_set_position ()

## Types and Values

#define | IANJUTA_ITERABLE_ERROR

## Object Hierarchy

        GInterface
        ╰── IAnjutaIterable

## Includes

    #include <libanjuta/interfaces/ianjuta-iterable.h>

## Description

## Functions

### ianjuta_iterable_error_quark ()

    GQuark
    ianjuta_iterable_error_quark (void);

#### Returns

### ianjuta_iterable_assign ()

    void
    ianjuta_iterable_assign (IAnjutaIterable *obj,
                             IAnjutaIterable *src_iter,
                             GError **err);

Assigns the iter position from `src_iter` .

#### Parameters

obj | Self |
src_iter | Source iter from which to copy the assignment. |
err | Error propagation and reporting |

### ianjuta_iterable_clone ()

    IAnjutaIterable *
    ianjuta_iterable_clone (IAnjutaIterable *obj,
                            GError **err);

Clones the iterable. The returned iterable object must be unreffed when done.

#### Parameters

obj | Self |
err | Error propagation and reporting |

#### Returns

A new instance of this iterable pointing at the same location.

[transfer full]

### ianjuta_iterable_compare ()

    gint
    ianjuta_iterable_compare (IAnjutaIterable *obj,
                              IAnjutaIterable *iter2,
                              GError **err);

Compares the position of `iter2` with this `obj` . Returns -1 value if this `obj` is smaller than `iter2` . Returns +1 value if this `obj` is larger than `iter2` . And returns 0 if both are equal. If you want difference of the iter positions, use `ianjuta_iterable_diff()`. This method is meant for fast comparision.

#### Parameters

obj | Self |
iter2 | Second iter to compare. |
err | Error propagation and reporting |

#### Returns

0 if equal, -1 if `obj` is smaller than `iter2` or +1 if `obj` is larger than `iter2` .

### ianjuta_iterable_diff ()

    gint
    ianjuta_iterable_diff (IAnjutaIterable *obj,
                           IAnjutaIterable *iter2,
                           GError **err);

Compares the position of `iter2` with this `obj` and returns difference in position of the two (`obj` - `iter2` ).

#### Parameters

obj | Self |
iter2 | Second iter to differenciate. |
err | Error propagation and reporting |

#### Returns

The position difference of `obj` - `iter2`

### ianjuta_iterable_first ()

    gboolean
    ianjuta_iterable_first (IAnjutaIterable *obj,
                            GError **err);

Set iter to first element position. Returns FALSE if there is no element in the iterable (hence does not have first). The iter points to the first valid item.

#### Parameters

obj | Self |
err | Error propagation and reporting |

#### Returns

TRUE if sucessful, other FALSE.

### ianjuta_iterable_foreach ()

    void
    ianjuta_iterable_foreach (IAnjutaIterable *obj,
                              GFunc callback,
                              gpointer user_data,
                              GError **err);

Call callback for each element in the list. Call back is passed the same iter, but with different position set (from first to last). This method does not affect current position. i.e. current position is restored at the end of this method.

#### Parameters

obj | Self |
callback | Callback to call for each element. |
user_data | user data that is passed back to the callback. |
err | Error propagation and reporting |

### ianjuta_iterable_get_length ()

    gint
    ianjuta_iterable_get_length (IAnjutaIterable *obj,
                                 GError **err);

Length of the iterable (number of elements indexable by it).

#### Parameters

obj | Self |
err | Error propagation and reporting |

#### Returns

total length of the list.

### ianjuta_iterable_get_position ()

    gint
    ianjuta_iterable_get_position (IAnjutaIterable *obj,
                                   GError **err);

Index of the current iter in the iterable. It will be from 0 to length - 1 (`ianjuta_iter_get_length()`) if iter is pointed at valid element. It will return -1 if iter is pointed at end-iter.

#### Parameters

obj | Self |
err | Error propagation and reporting |

#### Returns

integer index, or -1 for end-iter.

### ianjuta_iterable_last ()

    gboolean
    ianjuta_iterable_last (IAnjutaIterable *obj,
                           GError **err);

Set iter position to end-iter (one past last element) position. Returns FALSE if there is no element in the iterable (already at end-iter).

#### Parameters

obj | Self |
err | Error propagation and reporting |

#### Returns

TRUE if sucessful, other FALSE.

### ianjuta_iterable_next ()

    gboolean
    ianjuta_iterable_next (IAnjutaIterable *obj,
                           GError **err);

Set the iter position to next element position. Iter can go until one item past the last item and lands in end-iter. end-iter does not point to any valid item and signifies end of the list. Returns FALSE if iter was already at end-iter (iter can not go past it) and remains pointed to the end-iter.

#### Parameters

obj | Self |
err | Error propagation and reporting |

#### Returns

TRUE if sucessful, otherwise FALSE if already at end-iter.

### ianjuta_iterable_previous ()

    gboolean
    ianjuta_iterable_previous (IAnjutaIterable *obj,
                               GError **err);

Set the iter position to previous element position. Returns FALSE if there is no previous element and the iter remains pointed to the first element.

#### Parameters

obj | Self |
err | Error propagation and reporting |

#### Returns

TRUE if sucessful, other FALSE.

### ianjuta_iterable_set_position ()

    gboolean
    ianjuta_iterable_set_position (IAnjutaIterable *obj,
                                   gint position,
                                   GError **err);

Sets the current position of the iter to `position` . The given `position` must be from 0 to length - 1 (``ianjuta_iter_get_length()``) to point to a valid element. Passing `position` < 0 will set it to end-iter. It returns TRUE for the above cases. FLASE will be returned, if out-of-range `position` is passed (`position` > length - 1) and iter is set to end-iter.

#### Parameters

obj | Self |
position | New position for the iter. |
err | Error propagation and reporting |

#### Returns

TRUE if successfully set (i.e. `position` is within the range or end-iter). otherwise returns FALSE (i.e. `position` is out of data range).

## Types and Values

### IANJUTA_ITERABLE_ERROR

    #define IANJUTA_ITERABLE_ERROR ianjuta_iterable_error_quark()