We propose SaFE-APIOpt, a method that identifies interchangeable API pairs which are functionally equivalent under specific usage scenarios, and evaluates their runtime and memory performance across data scales. The approach is language-agnostic, enabling systematic performance-aware API substitution across multiple programming languages.

Usage

python fetch_so_posts.py <keyword> <tag> [--pagesize N] [--max-pages M]

• <keyword>: Search term for title/content
• <tag>: Single tag to add (the script automatically prepends python;)
• --pagesize: Number of results per page (default: 50)
• --max-pages: Maximum number of pages to fetch Example

python fetch_so_posts.py fast torch

→ Get links search with the keyword 'fast' for the torch library .And produces an Excel file named python_torch_fast.xlsx

Usage

python so_answer_crawler.py <input_excel> [--output <output_excel>] [--delay SECONDS]

• <input_excel>: Path to Excel file (must contain title & link columns)
• --output: Output filename
• --delay: Seconds to wait between requests

Example

python so_answer_crawler.py torch_fast.xlsx --output=torch_fast_answers.xlsx --delay=1.0

Usage

python gpt.py <input_excel> [--output <output_excel>]

• <input_excel>: Path to Excel
• --output: Output filename (default: generated_output.xlsx)

Example

python gpt.py torch__fast_answers.xlsx --output=torch_potential_SaFE_API.xlsx

Usage

python exec_example.py

In exec_example.py, we provide an example demonstrating the execution code for evaluating a SaFE API pair.The runtime and memory data for each input scale will be exported to output.xlsx

• The experimental results for RQ1 are organized in the file Evaluation_Case_Results_and_Categories.xlsx.The table in rq1_result.xlsx lists all the identified SaFE API pairs.
• The experimental results for RQ2 are compiled in the file Underlying_Mechanism_Classification.xlsx.
• The experimental results for RQ3 are documented in the four files: All_Issues.xlsx, Developer’s_Negative_Issues.xlsx, and Developer's_Positive_Issues.xlsx.
• The experimental results for RQ4 are documented in the file R_Java_SaFE_API_Pairs.xlsx. This file contains all the identified SaFE API pairs in Java and R