HxArray Class¶

class Hexaly.Optimizer.HxArray¶

Value type for array expressions. Such value is obtained with HxExpression.GetArrayValue() or HxSolution.GetArrayValue(HxExpression). An array can contain numbers (int, double), other HxArray (for multi-dimensional arrays), HxInterval or HxCollection (list, set).

Arrays are not decisions and cannot be modified.

Since:: 7.5
See:: HxModel
See:: HxExpression
See:: HxOperator.Array

Summary¶

Methods¶
`Count`	Returns the number of values in the array.
`IsBool`	Returns true if the value at the given position is a boolean.
`IsInt`	Returns true if the value at the given position is an integer.
`IsDouble`	Returns true if the value at the given position is a double.
`IsInterval`	Returns true if the value at the given position is an interval.
`IsArray`	Returns true if the value at the given position is an array.
`IsCollection`	Returns true if the value at the given position is a collection (list or set).
`IsUndefined`	If an argument is passed to the function, returns true if the value at the given position is undefined, otherwise returns true if the array itself is undefined.
`GetIntValue`	Returns the integer value at the given position.
`GetDoubleValue`	Returns the double value at the given position.
`GetIntervalValue`	Returns the interval value at the given position.
`GetArrayValue`	Returns the array value at the given position.
`GetCollectionValue`	Returns the collection value at the given position.
`ToString`	Returns a string representation of the values in the array in the format { val0, val1, ..., valN }.
`CopyTo`	Copy all the values of this array to the given array.

Instance methods¶

int Count()¶

Returns the number of values in the array. Elements in arrays are indexed from 0 to count()-1.

Returns:: Number of values in the array.
Return type:: int

bool IsBool(int position)¶

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

Arguments:: position (int) – Position of the value to query.
Returns:: True if the value at the given position is a boolean.
Return type:: bool

bool IsInt(int position)¶

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

Arguments:: position (int) – Position of the value to query.
Returns:: True if the value at the given position is an integer.
Return type:: bool

bool IsDouble(int position)¶

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

Arguments:: position (int) – Position of the value to query.
Returns:: True if the value at the given position is a boolean.
Return type:: bool

bool IsInterval(int position)¶

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

Arguments:: position (int) – Position of the value to query.
Returns:: True if the value at the given position is an interval.
Return type:: bool

bool IsArray(int position)¶

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

Arguments:: position (int) – Position of the value to query.
Returns:: True if the value at the given position is an array.
Return type:: bool

bool IsCollection(int position)¶

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

Arguments:: position (int) – Position of the value to query.
Returns:: True if the value at the given position is a collection.
Return type:: bool

bool IsUndefined(int position)¶

bool IsUndefined()

If an argument is passed to the function, returns true if the value at the given position is undefined, otherwise returns true if the array itself is undefined. A value can be undefined in 4 cases:

It is a double and its value is NaN (Not a Number).
It is an integer or boolean with no valid value (arithmetic or out of bounds exception).
It is an interval with at least one undefined bound.
It is the result of any ill-defined operation (at with out of bounds index or operations on undefined values for instance).

Arguments:: position (int) – Position of the value to query.
Returns:: True if the value at the given position is undefined, or if the array is undefined if no argument is passed.
Return type:: bool

long GetIntValue(int position)¶

Returns the integer value at the given position. If the value is neither an integer, nor a boolean, an exception is thrown.

Arguments:: position (int) – Position of the value to query.
Returns:: Integer value.
Return type:: long

double GetDoubleValue(int position)¶

Returns the double value at the given position. If the value is not a double, an exception is thrown.

Arguments:: position (int) – Position of the value to query.
Returns:: Double value.
Return type:: double

HxInterval GetIntervalValue(int position)¶

Returns the interval value at the given position. If the value is not an interval, an exception is thrown.

Arguments:: position (int) – Position of the value to query.
Returns:: Interval value.
Return type:: HxInterval

HxArray GetArrayValue(int position)¶

Returns the array value at the given position. If the value is not an array, an exception is thrown.

Arguments:: position (int) – Position of the value to query.
Returns:: Array value.
Return type:: HxArray

HxCollection GetCollectionValue(int position)¶

Returns the collection value at the given position. If the value is not a collection, an exception is thrown.

Arguments:: position (int) – Position of the value to query.
Returns:: Collection value.
Return type:: HxCollection

string ToString()¶

Returns a string representation of the values in the array in the format { val0, val1, ..., valN }.

Returns:: A String representation of the array
Return type:: string

void CopyTo(long[] values)¶

Copy all the values of this array to the given array. Only the integer values are copied to their corresponding position in the array. Cells of the array given in parameters that correspond to positions of non-integer values in this array remain unchanged.

The length of the array given in parameters can be different from the number of elements in this array. In that case, only the elements that fit in the array are copied.

This method is recommended if you need to access all the values of this array, instead of the roughly equivalent, but less performant, following code:

for(int i = 0; i < Math.Min(values.Length, array.Count()); i++)
{
    if(!array.IsInt(i)) continue;
    values[i] = array.GetIntValue(i);
}

Arguments:: values (long[]) – Array that will receive the integer values of this array.

void CopyTo(double[] values)

Copy all the values of this array to the given array. Only the double values are copied to their corresponding position in the array. Cells of the array given in parameters that correspond to positions of non-double values in this array remain unchanged.

The length of the array given in parameters can be different from the number of elements in this array. In that case, only the elements that fit in the array are copied.

This method is recommended if you need to access all the values of this array, instead of the roughly equivalent, but less performant, following code:

for(int i = 0; i < Math.Min(values.Length, array.Count()); i++)
{
    if(!array.IsDouble(i)) continue;
    values[i] = array.GetDoubleValue(i);
}

Arguments:: values (double[]) – Array that will receive the double values of this array.