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Summary of ChangesHello, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request introduces important fixes to enhance the robustness and efficiency of the system. It prevents blockchain scanning operations from attempting to scan beyond the current tip, ensuring data consistency and avoiding unnecessary processing. Additionally, it significantly optimizes the construction of displayed transactions by improving the input selection algorithm, leading to faster and more efficient transaction processing. Highlights
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Code Review
This pull request aims to improve the performance of finding matching inputs for transactions by implementing a branch and bound algorithm. While the refactoring to a backtracking approach is a good direction for performance, the new implementation contains a critical bug in its pruning logic that can cause it to miss valid solutions. I've provided a comment with a fix for this issue. The other changes are minor improvements and style fixes.
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Code Review
This pull request introduces several fixes, including preventing scanning beyond the tip height and improving the performance of displayed transaction construction. The changes to the iter_search_for_matching_inputs function in processor.rs are particularly notable, as they refactor the input selection algorithm to use a more efficient branch-and-bound approach, avoiding unnecessary vector cloning in recursive calls. Additionally, the initialization of selected_inputs with a pre-allocated capacity is a good optimization.
Description
Fix scan beyond tip
Checks the tip if the start height is set, so that we dont scan beyond the tip
Fix speed of display transaction
Fixes the display transaction construction to use branch and bound to find the inputs