Capability-based file APIs — use openat2 or similar to confine file writes to the work directory, preventing path traversal via ../../etc/passwd
SpeedPro CEO Paul Brewster. Credit: SpeedPro
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// 易错点6：忘记将当前元素入栈，导致前面的元素无法匹配到当前值
Urgent cases are being defined as any patient whose symptoms suggest they need treatment to start the same day or where there is a risk of deterioration if they aren't assessed, such as a child with a high fever and a rash, or a frail older person who has suddenly become confused.