LSNativeContext Class¶

class localsolver::LSNativeContext¶

Context for native functions.

Native contexts are used to query the values of the arguments passed to native functions.

Since:	6.0

Summary¶

Functions¶
`count`	Returns the number of values in the current context.
`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.
`isCollection`	Returns true if the value at the given position is a collection (list or set).
`isArray`	Returns true if the value at the given position is an array.
`getIntValue`	Returns the integer value at the given position.
`getDoubleValue`	Returns the double value at the given position.
`getCollectionValue`	Returns the collection value at the given position.
`getArrayValue`	Returns the array value at the given position.

int count() const¶

Returns the number of values in the current context.

Values in contexts are indexed from 0 to count() - 1.

bool isBool(int pos) const¶

Returns true if the value at the given position is a boolean.

You can retrieve the value with getIntValue.

Return:	True if the value at the given position is a boolean.
Parameters:	pos - Position of the value to query.

bool isInt(int pos) const¶

Returns true if the value at the given position is an integer.

You can retrieve the value with getIntValue.

Return:	True if the value at the given position is an integer.
Parameters:	pos - Position of the value to query.

bool isDouble(int pos) const¶

Returns true if the value at the given position is a double.

You can retrieve the value with getDoubleValue.

Return:	True if the value at the given position is a double.
Parameters:	pos - Position of the value to query.

bool isCollection(int pos) const¶

Returns true if the value at the given position is a collection (list or set).

You can retrieve the value with getCollectionValue.

Return:	True if the value at the given position is a collection.
Since:	8.5
Parameters:	pos - Position of the value to query.

bool isArray(int pos) const¶

Returns true if the value at the given position is an array.

You can retrieve the value with getArrayValue.

Return:	True if the value at the given position is an array.
Since:	8.5
Parameters:	pos - Position of the value to query.

lsint getIntValue(int pos) const¶

Returns the integer value at the given position.

If the value is neither an integer nor a boolean, an exception is thrown.

Return:	Integer value.
Parameters:	pos - Position of the value to query.

lsdouble getDoubleValue(int pos) const¶

Returns the double value at the given position.

If the value is not a double, an exception is thrown.

Return:	Double value.
Parameters:	pos - Position of the value to query.

LSCollection getCollectionValue(int pos) const¶

Returns the collection value at the given position.

If the value is not a collection (list or set), an exception is thrown. Note that the returned collection is read only.

Return:	Collection value.
Since:	8.5
Parameters:	pos - Position of the value to query.

LSArray getArrayValue(int pos) const¶

Returns the array value at the given position.

If the value is not an array, an exception is thrown.

Return:	Array value.
Since:	8.5
Parameters:	pos - Position of the value to query.