From 3f57c0a515bfa13de2ee1e5959cbfe47a2357b00 Mon Sep 17 00:00:00 2001
From: Rosen Penev <rosenp@gmail.com>
Date: Sun, 13 Dec 2020 20:21:34 -0800
Subject: [PATCH] VImage: reserve vector before push_back loop

Avoids unnecessary resizes.

Found with clang-tidy's performance-inefficient-vector-operation

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 cplusplus/VImage.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cplusplus/VImage.cpp b/cplusplus/VImage.cpp
index 49b006a4..01e1a6f3 100644
--- a/cplusplus/VImage.cpp
+++ b/cplusplus/VImage.cpp
@@ -767,6 +767,7 @@ std::vector<VImage>
 VImage::bandsplit( VOption *options ) const
 {
 	std::vector<VImage> b;
+	b.reserve(bands());
 
 	for( int i = 0; i < bands(); i++ )
 		b.push_back( extract_band( i ) );