From: benthecarman <benthecarman@live.com>
Date: Thu, 8 Feb 2024 17:57:13 +0000 (+0000)
Subject: Worlds smallest optimization
X-Git-Tag: v0.0.123-beta~73^2
X-Git-Url: http://git.bitcoin.ninja/?a=commitdiff_plain;h=0769b22f5c40854c8048a320bcd1625ea2461c3c;p=rust-lightning

Worlds smallest optimization

Preallocate for 8 items in the vec. I chose this value for

1. features
2. description
3. payment hash
4. expire time
5. min_final_cltv
6. payment secret
7. route hint
8. for the memes
---

diff --git a/lightning-invoice/src/lib.rs b/lightning-invoice/src/lib.rs
index df0412bfc..610f739e5 100644
--- a/lightning-invoice/src/lib.rs
+++ b/lightning-invoice/src/lib.rs
@@ -550,7 +550,7 @@ impl InvoiceBuilder<tb::False, tb::False, tb::False, tb::False, tb::False, tb::F
 			amount: None,
 			si_prefix: None,
 			timestamp: None,
-			tagged_fields: Vec::new(),
+			tagged_fields: Vec::with_capacity(8),
 			error: None,
 
 			phantom_d: core::marker::PhantomData,