retreat to raw ptr from smart ptr ASAP

Raw ptr is in the fabric of C. Raw pointers interact/integrate with countless parts of the language in complex ways. Smart pointers are advertised as drop-in replacements but that advertisement may not cover all of those “interactions”:

  • double ptr
  • new/delete/free
  • ptr/ref layering
  • ptr to function
  • ptr to field
  • 2D array
  • array of ptr
  • ptr arithmetics
  • compare to NULL
  • ptr to const — smart ptr to const should be fine
  • “this” ptr
  • factory returning ptr — can it return a smart ptr?
  • address of ptr object

Personal suggestion (unconventional) — stick to the known best practices of smart ptr (such as storing them in containers). In all other situations, do not treat them as drop-in replacements but retrieve and use the raw ptr.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s