edge case
noun [ C ] computing mainly specialized uk/ˈedʒ ˌkeɪs/ us/ˈedʒ ˌkeɪs/
边缘案例（在计算机编程中，只出现在可能值范围的最高或最低端或极端情况下的问题或情况）
a problem or situation, especially in computer programming, that only happens at the highest or lowest end of a range of possible values or in extreme situations
You may run into an edge case where your program screws up. 你的程序出错的地方可能会出现边缘案例。
In engineering, it is important not to overlook the task of planning for edge cases. 在工程中，不要忽视对边缘情况出现的准备非常重要。
- More examples
- I could trigger this issue simply by hitting 'ESC' in my web browser - hardly an edge case!
- The only circumstance in which you might encounter edge cases is if you're planning on running it across the open Internet.
- People were talking about the edge cases where drivers cause hardware damage.
- A series of edge cases can be used to give reasonable confidence that if the program behaves correctly at the edges, it should behave everywhere else.