Juliaというプログラミング言語を勉強しています。そのドキュメントのtry/catchのところに次の説明があります。
The power of the try/catch construct lies in the ability to unwind a deeply nested computation immediately to a much higher level in the stack of calling functions. There are situations where no error has occurred, but the ability to unwind the stack and pass a value to a higher level is desirable. Julia provides the rethrow, backtrace, catch_backtrace and current_exceptions functions for more advanced error handling.
https://docs.julialang.org/en/v1/manual/control-flow/#The-try/catch-statement
これがよく分かりません。
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