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yuizho/gist:de2cffb514a774f32819c108934425e5

Created November 23, 2019 07:19
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gistfile1.txt
Stream<String> stream =
Arrays.asList("a", "b", "c").stream()
.filter(s -> !s.equals("a"));
System.out.println(stream.collect(Collectors.toList()))
// ココでエラーになる
// java.lang.IllegalStateException: stream has already been operated upon or closed
System.out.println(stream.collect(Collectors.toList()));
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