Catman...arc_set(3pm)

💖 Catmandu::Fix::marc_set 💖

okay bestie, so this is a page from the User Contributed Perl Documentation, section 3pm — it's all about Catmandu::Fix::marc_set, and she's here to set a MARC value on one little (sub)field to a brand new value. no cap. 🎀

---

✨ NAME ✨

Catmandu::Fix::marc_set — set a marc value of one (sub)field to a new value 🦋

---

🌸 SYNOPSIS 🌸

# Set a field in the leader
if marc_match('LDR/6','c')
    marc_set('LDR/6','p')
end

# Set a control field
marc_set('001',1234)

# Set all the 650-p fields to 'test'
marc_set('650p','test')

# Set the 100-a subfield where indicator-1 is 3
marc_set('100[3]a','Farquhar family.')

# Copy data from another field in a subfield
marc_set('100a','$.my.deep.field')

---

💅 DESCRIPTION 💅

Set the value of a MARC subfield to a new value. that's it, that's the vibe. iconic behavior honestly 👑

---

🫶 METHODS 🫶

💜 marc_set(MARC_PATH , VALUE)

Set a MARC subfield to a particular new value. This value can be a literal or it can reference an existing field in the record using the dollar JSON_PATH syntax. lowkey the flexibility is the whole point fr fr ✨

---

🌈 INLINE 🌈

This Fix can be used inline in a Perl script, which is giving main character energy:

use Catmandu::Fix::marc_set as => 'marc_set';

my $data = { record => [...] };

$data = marc_set($data, '245a', 'test');

---

🔥 SEE ALSO 🔥

• Catmandu::Fix::marc_add
• Catmandu::Fix::marc_copy
• Catmandu::Fix::marc_cut
• Catmandu::Fix::marc_paste

go read those too, they're the rest of the friend group 🫶

---

and that's a wrap, bestie 💖 this was written for perl v5.38.2 and stamped 2024-08-03 — go slay some MARC records, periodt 🌟