DELTA(1p)

📦 version 2.074, in ubuntu jammy

✨ DELTA(1p) ✨

ok so this is DELTA, bestie — a lil page from the User Contributed Perl Documentation corner of the world. buckle up 💖

🌸 NAME 🌸

PDL::Delta — PDL changes between V1.0 and V2.0 🦋

💅 DESCRIPTION 💅

okay so listen. this file is literally an attempt to list the major user-visible changes between PDL versions 1.0 and 2.0. that's it. that's the whole assignment. no cap. ✨

👑 Core Changes 👑

🎀 ndarrays are not hashes any more 🎀

this is the big one, bestie. watch:

$x = zeroes 10,10;
$$x{FOO} = "bar"

yeah. that doesn't work. 💀 sorry.

they are currently scalar references (to opaque C structures, in finer terms) because of speed as well as syntactic issues. so like, the vibe check on hashes failed and they got replaced.

if you want to have a hash, use

$x->hdr()

which returns a reference to an anonymous hash. 🌈

also, subclassing works if you store an ndarray in the hash member PDL. iykyk 💅

there are also many core enhancements to support Dataflow and Slicing tricks, but these do not introduce any incompatibilities. so like, breathe. 🫶

🌟 Incompatible Changes vs 1.11 🌟

okay these ones WILL catch you off guard, so read them fr fr 😭
  • rgrep — Order of the arguments has changed. 👀
  • copy method — No longer copies the header. This may not be a misfeature. 🙈

🦋 Documentation Changes 🦋

Many of the base and library pods were updated. 📚✨

🔥 SEE ALSO 🔥

  • The Changes file for exhaustive details on what changed. 👑
  • The INSTALL file for how to build PDL. 🛠️
  • The README file for general stuff. 🎀

🌈 HISTORY 🌈

pdldelta was inspired by perldelta man page in the Perl 5.004 distribution. 💜 iconic behaviour honestly.

and that's the whole page, bestie!! this was DELTA(1p) from perl v5.34.0, dated 2022-02-08 — slay, go read the other manpages, mwah 💅💖🫶

📦 where this page comes from