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Re: Where to find info on low level perl internals names?

by Corion (Pope)
on Oct 25, 2011 at 11:04 UTC ( #933600=note: print w/replies, xml ) Need Help??

in reply to Where to find info on low level perl internals names?

For general information on Perls internal memory structures, I would look at illguts. The names for the various structures are best treated as Just Names, but the following mnemonics work for me:

SV - Scalar Value IV - Integer Value NV - Numerical Value RV - Reference Value PV - Pointer Value (like *char, for example) LV - I haven't encountered this one, maybe it lives in illguts GV - glob value. The glob is (I think) shorthand for global AV - Array Value HV - Hash Value CV - Code Value (think subroutine reference) FM - Format IO - Filehandle
The ops are also documented in illguts I believe.

Update: Typoo

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Re^2: Where to find info on low level perl internals names?
by patcat88 (Deacon) on Oct 25, 2011 at 14:01 UTC
    LV = left hand value, used for "substr($string, 0, 10) = "replacement value";" system.

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[ambrus]: Corion: Is their budget estimate four times the initial estimate yet? Was the construction late by six months already three months after they started?
[marto]: I'll believe it when I see it. That's been due for many years now :P
[marto]: oddly the last time I was there I saw a zeppelin in flight for the first time
[Corion]: ambrus: I don't know how far the budget estimate has been overrun yet
[Corion]: marto: Heh ;) No, you were likely at Tegel or Schönefeld, the new one ("BER") will be somewhat outside of Berlin ;)
[marto]: Corion Schoenfeld, but my friend has been telling me about this new airport for about 7-8 years now :P
[marto]: I doubt it even exists as a building site :P

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