The methods of the COper class are listed here.
Construction
 COper | Constructs a COper object |
Operations
Type inspection
| IsArray | Does the OPER contain an array? |
| IsDouble | Does the OPER contain a double-precision floating point number? |
| IsError | Does the OPER contain an error? |
| IsBool | Does the OPER contain a boolean? |
| IsString | Does the OPER contain a string? |
| IsEmpty | Is the OPER empty? |
| IsMissing | Is the OPER missing (i.e. omitted from the caller's argument list)? |
| IsPresent | Is the OPER neither missing nor empty? |
Assignment operators
| operator = | Assigns a new value to the OPER, using a variety of input types |
Output casting operators
| operator double | Returns a numeric value |
| operator CString | Returns a string value |
| operator BOOL | Returns a boolean value |
| operator bool | Returns a boolean value |
| operator [] | Returns an item from an array |
Input functions
| FromDouble | Assigns an floating-point numeric value and data type to the OPER |
| FromError | Assigns an error value and data type to the OPER |
| FromBool | Assigns a boolean value and data type to the OPER |
| FromString | Assigns a string value and data type to the OPER |
| FromDoubleArray | Assigns the OPER to be an array of double's, and copies values into the array |
Output functions
| ToDouble | Retrieves a numeric value from the OPER |
| ToString | Returns a string value |
| ToBool | Returns a boolean value |
| ToDoubleArray | Copies the contents of an OPER into a 'C' array of doubles or pointers to doubles |
| ReadValue | Reads a single value from an COper or a cell of an array COper |
Optional input functions
| ReadOptional | Reads an optional argument from an OPER |
| ReadOpt | Reads an optional argument from an OPER, optionally using a default for omitted arguments |
Array functions
| GetWidth | Returns the number of columns in an array |
| GetHeight | Returns the number of rows in an array |
| GetDims | Gets the number of rows and columns in an array |
| GetCount | Returns the number of cells in an array |
| Cell | Returns a reference to an item in an array |
| IsVector | Returns TRUE if the OPER contains 1 row and/or 1 column |
| GetVectorCount | Returns the number of cells in an array |
| VectorCell | Returns a reference to an item in a one-dimensional array |
| AllocArray | Assigns the OPER to be an array, sets it to a size and allocates the memory to contain its items |
| FreeArray | Releases the resources of an array's items |
Matrix & vector functions
| ReadVector | Reads a row or a column from an array into a vector of numbers or strings |
| ReadColumn | Reads a column from an array into a vector of numbers or strings |
| ReadRow | Reads a row from an array into a vector of numbers or strings |
| ReadArrayIntoOrderedCollection1D | Reads a row or a column from an array into an ordered collection of numbers or strings |
| ReadArrayIntoSet1D | Reads a row or a column from an array into an indexed collection of numbers or strings |
| ReadMatrix | Reads data from a 2-dimensional array into a matrix of numbers or strings |
| ReadGroupItem | Reads a single value from an array into a number or string |
Deprecated matrix & vector functions
| ColToVector | Reads a column from an array into a vector of numbers or strings |
| RowToVector | Reads a row from an array into a vector of numbers or strings |
| ToMatrix | Reads an array argument into a two-dimensional matrix of numbers or strings |
| ReadVectorItem | Reads a single value from an array into a number or string |
Requirements
Header: xllplus.h