Java 01. ДЗ 05. Малютина Катя, подгруппа 2 #58
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sproshev
suggested changes
Apr 10, 2017
| public final class Collections { | ||
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| public static <T, R> | ||
| Iterable<R> map(Function1<? super T, R> f, Iterable<T> a) { |
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см что написано про возвращаемые типы в задании
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| public abstract Boolean apply(T t); | ||
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| static final Predicate ALWAYS_TRUE = new Predicate() { |
| } | ||
| }; | ||
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| static final Predicate ALWAYS_FALSE = new Predicate() { |
| @@ -0,0 +1,272 @@ | |||
| package ru.spbau.mit; | |||
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wildcard'ы не проверяются
ленивость предикатов не проверяется
тесты конечно желательно по соответствующим классам разносить
Author
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@sproshev тут, я наверно забыла написать, что поправила замечания) |
sproshev
suggested changes
May 6, 2017
| public Boolean apply(Object o) { | ||
| return false; | ||
| } | ||
| }; |
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надо заиспользовать ALWAYS_T и F в тестах, тогда станет понятно, есть ли какие-то проблемы в них)
| ArrayList<String> str = new ArrayList<>(); | ||
| str.add("bbbb"); | ||
| str.add("aaa"); | ||
| str.add("ccc"); |
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List<String> str = Arrays.asList("bbbb", "aaa", "ccc");
| public Boolean apply(Object object) { | ||
| return null; | ||
| } | ||
| }, new ArrayList<Integer>()); |
| for (int i = value, n = 0; n < 20; i++, n++) { | ||
| Assert.assertTrue(i + 1 == f.apply(i)); | ||
| Assert.assertTrue(i - 1 == g.apply(i)); | ||
| Assert.assertTrue(i == f.compose(g).apply(i)); |
Author
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@sproshev Поправила. |
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Author
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@sproshev Поправила. |
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@sproshev