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Object-Oriented Java primitives, as an alternative to Google Guava and Apache Commons

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`Joined` has two constructors with the same erasure. ``` Joined(final Iterable

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Instead of calling `new ForEach(proc).exec(iterable)`, one should be able to call `new ForEach(iterable).exec(proc)`. Same for the other ForEach prefixed classes. The advantage is twofold: - it reads better - type...

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The puzzle `1567-ac41b39c` from #1567 has to be resolved: https://github.com/yegor256/cactoos/blob/c0c58747ad8926ec9f589f2ae857ad5e04cb5999/src/main/java/org/cactoos/proc/package-info.java#L29-L31 The puzzle was created by @scfj on 11-May-21. Estimate: 30 minutes, role: DEV. If you have any technical questions, don't...

bug
pdd
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The puzzle `1572-37aa2e90` from #1572 has to be resolved: https://github.com/yegor256/cactoos/blob/9fbb7570539dcbdcb41879bf1462bff0e6762b70/src/main/java/org/cactoos/func/package-info.java#L29-L31 The puzzle was created by Dmitry Barskov on 12-May-21. Estimate: 30 minutes, role: DEV. If you have any technical questions,...

bug
pdd
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The puzzle `1335-2793a937` from #1335 has to be resolved: https://github.com/yegor256/cactoos/blob/510666e73b399f16beb2ba1c2d4728fb1de6d627/src/test/java/org/cactoos/number/SumOfTest.java#L37-L41 The puzzle was created by Victor Noël on 08-May-21. Estimate: 30 minutes, role: DEV. If you have any technical questions,...

bug
pdd
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The puzzle `1434-fd48e847` from #1434 has to be resolved: https://github.com/yegor256/cactoos/blob/9f33693c15e48e10e7e5a62bbb32c66f26200c62/pom.xml#L258-L264 The puzzle was created by @LightPro-Inc on 05-Apr-21. Estimate: 30 minutes, role: DEV. If you have any technical questions, don't...

bug
pdd
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The problem is defined [here](https://stackoverflow.com/questions/5778658/how-to-convert-outputstream-to-inputstream) I see you have `TeeInput`, and `TeeOutput` but I couldn't make it with them. It is possible with `PipedInputStream/PipedOutputStream` but similar classes aren't available in...

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The class `org.cactoos.text.Replaced` uses `StringBuffer` instead of `StringBuilder` ([here](https://github.com/yegor256/cactoos/blob/3675019c59c64477e8b80a04a25f86d717d9ac4b/src/main/java/org/cactoos/text/Replaced.java#L88)). Let's change it because `StringBuilder` is more efficient.

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@victornoel I've worked on #1554 and I've realized that the `io.InputOfTest.readsSecureUrlContent()` test tried to consume the `https://www.yegor256.com/robots.txt` URL but, at the moment of the test, the `Tests (ubuntu-18.04, 11)` container...

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Let's zip some files. ``` final Path folder = new TempFolder("abc").value(); new LengthOf( new TeeInput( new InputOf("A"), new OutputTo( new File(folder.toFile(), "A.txt") ) ) ).value(); new LengthOf( new TeeInput( new...

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