Refining vSphere SDK for Perl Scripts This chapter discusses some programming techniques for your vSphere SDK for Perl scripts. The chapter includes these topics: ■ Creating and Using Filters ■ Filtering Views Selectively Using Properties ■ Retrieving the ServiceInstance Object on a vSphere Host ■ Saving and Using Sessions ■ Using Multiple Sessions ■ Learning About Object Structure Using Data::Dumper ■ Specifying Untyped Arguments in Scheduled Tasks and Callbacks ■ Using Advanced Subroutines