- Function cp::BeginAtBegin(firstActivity, secondActivity, delay)
cp::BeginAtBegin
The function cp::BeginAtBegin(a,b,d)
returns 1 if one of the
activities \(a\) and \(b\) is absent, or if the begin of
activity \(a\) plus a nonnegative time period \(d\) is equal to
the begin of activity \(b\). The function
cp::BeginAtBegin(a,b,d)
is equivalent to
This function is typically used in scheduling constraints to place a sequencing restriction on activities.
cp::BeginAtBegin(
firstActivity, ! (input) an expression
secondActivity, ! (input) an expression
delay ! (optional) an expression
)
Arguments
- firstActivity
An expression that results in an activity.
- secondActivity
An expression that results in an activity.
- delay
An optional expression that results in an integer number of time slots. This expression may involve variables. The default value of this expression is 0.
Return Value
This function returns 1 if the above condition is satisfied, and 0 if it is not.
See also
The functions
cp::BeginBeforeBegin
andcp::BeginBeforeEnd
, andConstraint Programming on Constraint Programming in the Language Reference.