Qore Programming Language Reference Manual  0.9.4.5
<callref> Class Reference

Methods in this pseudo-class can be executed on call references. More...

Inheritance diagram for Qore::<callref>:

Public Member Methods

bool callp ()
 Returns True because this is a callable type. More...
 
auto exec (...)
 Evaluates the code with the arguments given and returns the result. More...
 
int typeCode ()
 Returns Qore::NT_CALLREF. More...
 
bool val ()
 Returns True. More...
 
- Public Member Methods inherited from <value>
bool callp ()
 Returns False; this method is reimplemented in other types and will return True if the given expression is a callable value (ie closures or call references) More...
 
bool complexType ()
 returns True if the value has a complex type, False if not More...
 
bool empty ()
 Returns True; this method will be reimplemented in container types where it may return False. More...
 
string fullType ()
 returns the full type name which differs from the simple type name in case of complex types and objects More...
 
bool intp ()
 Returns False; this method is reimplemented in other types and will return True if the given expression can be converted to an integer. More...
 
AbstractIterator iterator ()
 Returns an iterator object for the value; the default iterator object returned is SingleValueIterator. More...
 
int lsize ()
 Returns 1; the return value of this method should give the list size of the value, which is normally 1 for non-lists (except for NOTHING where the size will be 0) and the number of the elements in the list for lists; this method will be reimplemented in other types where it may return other values. More...
 
int size ()
 Returns zero; this method will be reimplemented in container types where it may return a non-zero value. More...
 
bool sizep ()
 Returns True if the type can return a non-zero size (True for containers including binary objects and strings, False for everything else) More...
 
bool strp ()
 Returns False; this method is reimplemented in other types and will return True if the given expression can be converted to a string. More...
 
bool toBool ()
 Returns the boolean representation of the value; the default is False. More...
 
float toFloat ()
 Returns the floating-point representation of the value; the default is 0.0. More...
 
int toInt ()
 Returns the integer representation of the value; the default is 0. More...
 
number toNumber ()
 Returns the arbitrary-precision numeric representation of the value; the default is 0. More...
 
string toString ()
 Returns the string representation of the value; the default is an empty string. More...
 
string type ()
 Returns the string type for the value. More...
 
int typeCode ()
 Returns the type code for the value. More...
 
bool val ()
 Returns False; this method is reimplemented in other types and will return True if the given expression has a non-empty value. More...
 

Detailed Description

Methods in this pseudo-class can be executed on call references.

Member Function Documentation

◆ callp()

bool <callref>::callp ( )

Returns True because this is a callable type.

Code Flags:
CONSTANT
Example:
if (n.callp())
printf("the result of calling the value: %y\n", n());
Returns
True because this is a callable type

◆ exec()

auto <callref>::exec (   ...)

Evaluates the code with the arguments given and returns the result.

Parameters
...the arguments to the code to be called
Returns
the return value of the code called

◆ typeCode()

int <callref>::typeCode ( )

Returns Qore::NT_CALLREF.

Code Flags:
CONSTANT
Example:
switch (c.typeCode()) {
case NT_CALLREF:
printf("%y: is a call reference\n", c);
break;
}
Returns
Qore::NT_CALLREF

◆ val()

bool <callref>::val ( )

Returns True.

Code Flags:
CONSTANT
Example:
bool b = c.val();
Returns
True
See also