HxExternalArgumentValues Class¶

class hexaly.optimizer.HxExternalArgumentValues¶

Argument values for external functions. Argument values are used to query the values of the arguments passed to external functions.

Since:: 9.5

Summary¶

Methods¶
`count`	Returns the number of values in the current argument values.
`is_undefined`	Returns true if the argument at the given position has an undefined value.
`is_bool`	Returns true if the value at the given position is a boolean.
`is_int`	Returns true if the value at the given position is an integer.
`is_double`	Returns true if the value at the given position is a double.
`is_interval`	Returns true if the value at the given position is an interval.
`is_collection`	Returns true if the value at the given position is a collection (list or set).
`is_array`	Returns true if the value at the given position is an array.
`get`	Returns the value at the given position.

Special methods¶
`__len__`	Returns the number of values in the current argument values.
`__getitem__`	Returns the value at the given position.

Instance methods¶

HxExternalArgumentValues.count()¶: Returns the number of values in the current argument values.

HxExternalArgumentValues.is_undefined(pos)¶

Returns true if the argument at the given position has an undefined value. An undefined value is often the result of an illegal or impossible operation. For example, the square root of a negative number, the addition of 2 opposite infinities, accessing an array or collection outside its bounds…

Attempting to access an argument with an undefined value will raise an exception. It is therefore recommended to check whether or not each argument is undefined before accessing its value. This is particularly true during the feasibility phase, when the probability of incorrect operations is very high.

Parameters:: pos – Position of the argument to query.
Returns:: True if the argument at the given pos is undefined.
Return type:: bool

HxExternalArgumentValues.is_bool(pos)¶

Returns true if the value at the given position is a boolean. You can retrieve the value with get().

Parameters:: pos – Position of the value to query.
Returns:: True if the value at the given position is a boolean.
Return type:: bool

HxExternalArgumentValues.is_int(pos)¶

Returns true if the value at the given position is an integer. You can retrieve the value with get().

Parameters:: pos – Position of the value to query.
Returns:: True if the value at the given position is an integer.
Return type:: bool

HxExternalArgumentValues.is_double(pos)¶

Returns true if the value at the given position is a double. You can retrieve the value with get().

Parameters:: pos – Position of the value to query.
Returns:: True if the value at the given position is a double.
Return type:: bool

HxExternalArgumentValues.is_interval(pos)¶

Returns true if the value at the given position is an interval. You can retrieve the value with get().

Parameters:: pos – Position of the value to query.
Returns:: True if the value at the given position is an interval.
Return type:: bool

HxExternalArgumentValues.is_collection(pos)¶

Returns true if the value at the given position is a collection (list or set). You can retrieve the value with get().

Parameters:: pos – Position of the value to query.
Returns:: True if the value at the given position is an array.
Return type:: bool

HxExternalArgumentValues.is_array(pos)¶

Returns true if the value at the given position is an array. You can retrieve the value with get().

Parameters:: pos – Position of the value to query.
Returns:: True if the value at the given position is an array.
Return type:: bool

HxExternalArgumentValues.get(pos)¶

Returns the value at the given position. The returned value can be a boolean, an integer, a double, a HxInterval, a HxCollection or a HxArray.

Parameters:: pos – Position of the value to query.
Returns:: Value
Return type:: bool, int, double, HxInterval, HxCollection or HxArray

Special operators and methods¶

HxExternalArgumentValues.__len__()¶: Returns the number of values in the current argument values. This method allows users to call len() function directly on the external argument values without using the count() method.

HxExternalArgumentValues.__getitem__(pos)¶

Returns the value at the given position. This method allows users to use [] operator directly on the external argument values without using the get() method.

Parameters:: pos – Position of the value to query.
Returns:: Value
Return type:: int, double, HxArray or HxCollection