MONGOC_BULKWR...ON_WRITEERRORS(3)

🎀 MONGOC_BULKWR...ON_WRITEERRORS(3) 🎀

ok so bestie, this one is straight out of the libmongoc docs (we're on 2.5.6, keep that in your notes 📝) and it's genuinely one of the most useful lil functions when your bulk write goes sideways. no cap.

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✨ SYNOPSIS ✨

const bson_t *
mongoc_bulkwriteexception_writeerrors (const mongoc_bulkwriteexception_t *self);

like, that's the whole signature. she's compact. she's iconic. 💅

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💖 DESCRIPTION 💖

Okay so picture this: your bulk write came back with a mongoc_bulkwriteexception_t and you're like "bestie what happened 😭". This function hands you a BSON document that maps model indexes → write errors. So every failed op in your batch gets a number key and a lil explanation. it's giving receipts. 🧾

Example, look at this beauty:

{
  "0" : { "code" : 123, "message" : "foo", "details" : {  } },
  "1" : { "code" : 456, "message" : "bar", "details" : {  } }
}

so "0" and "1" are the model indexes, and each one carries its own "code", "message", and "details". lowkey obsessed with how tidy that is. 🌸

And if there are no write errors? You get an empty document. not NULL, not a crash, just a cute lil empty doc. we love a calm, well-adjusted return value. 🫶

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👑 AUTHOR 👑

MongoDB, Inc — yes, the whole company. main character energy fr fr. 🔥

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🌈 COPYRIGHT 🌈

2009-present, MongoDB, Inc. — that's the legal bit, don't @ me, just respect the license bestie. 💜

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and that's the page!! go forth and debug your bulk writes like the icon you are 💖✨

~ sign-off from your girl: this was libmongoc version 2.5.6, dated Oct 09, 2026 — see you in the next manpage, mwah 🎀🦋