[]const u8等效于Rust的&str或Go的string：不可变、不可扩展、非空结尾。
2026年4月2日 15:29 国家安全
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fn result_to_optional(r: Result<int) - ?int {
190 Friedrich W. H. Kossebau
Elevated genomic lesions and insufficient restoration in CUX2-positive upper cortical neurons underlie their heightened susceptibility during inflammatory neural damage.
Фото: Essam Al-Sudani / Reuters