roon@lemmy.ml to Programmer Humor@programming.devEnglish · 6 months ago"I want to live forever in AI"lemmy.mlimagemessage-square83fedilinkarrow-up1718arrow-down134file-textcross-posted to: programmerhumor@lemmy.ml
arrow-up1684arrow-down1image"I want to live forever in AI"lemmy.mlroon@lemmy.ml to Programmer Humor@programming.devEnglish · 6 months agomessage-square83fedilinkfile-textcross-posted to: programmerhumor@lemmy.ml
minus-squarepewpew@feddit.itlinkfedilinkarrow-up10·6 months agoWhats the difference between void fn(Type& var) and void fn(Type* var)?
minus-squarecbazero@programming.devlinkfedilinkarrow-up9arrow-down1·6 months agoI guess you ask for C++. There Type* can be null while Type& can’t be null. When it gets compiled Type& is compiled (mostly) to the same machinecode as Type*.
minus-squareValmond@lemmy.worldlinkfedilinkarrow-up7·6 months agoYou can pass nullptr in the second example (that is not what OP wrote though, hes second is making a copy).
minus-squarepewpew@feddit.itlinkfedilinkarrow-up3·6 months agoThanks, I was Just curious. I knew what * did but I wasn’t sure about &
Whats the difference between
void fn(Type& var)andvoid fn(Type* var)?I guess you ask for C++. There Type* can be null while Type& can’t be null. When it gets compiled Type& is compiled (mostly) to the same machinecode as Type*.
You can pass nullptr in the second example (that is not what OP wrote though, hes second is making a copy).
Thanks, I was Just curious. I knew what * did but I wasn’t sure about &