# LSCallbackType Enumeration¶

class localsolver.LSCallbackType

List of types that can be used with callbacks. Each type corresponds to a specific event that can occur during the resolution.

As other enumerations present in the localsolver module, LSCallbackType is enumerable and indexable:

print (LSCallbackType[0])                    # Shows LSCallbackType.PHASE_STARTED
print (LSCallbackType.PHASE_STARTED.value)   # Shows 0

# Iterates over the members of LSCallbackType
for e in LSCallbackType:
print e

Since: 4.0 LocalSolver.add_callback()
PHASE_STARTED

Event that occurs when a phase is started.

PHASE_ENDED

Event that occurs when a phase ends.

DISPLAY

Event that occurs regularly before, after and during the search to display useful information about the model and the resolution. The time between two such events can be tuned with the LSParam.time_between_displays parameter.

TIME_TICKED

Event that occurs regularly during the resolution. The time between two such events can be tuned with the LSParam.time_between_ticks parameter.

 Since: 6
ITERATION_TICKED

Event that occurs regularly during the resolution. The number of iterations between two such events can be tuned with the LSParam.iteration_between_ticks parameter.

 Since: 6