Functional Programming in Java, Second Edition (Pragmatic Bookshelf)
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Just some thoughts on being hard on exceptions in functional languages.
On p. 167 we read:
Functional style code is amazing, concise, ...
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As for FinanceData on page 91, the code for AirportInfo uses the suspect and soon-to-be-deprecated java.net.URL. Let’s use java.net.URI i...
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Nothing surprising here, just adapting the form to the other examples.
Ah yes, compute() now returns an immutable list in all cases.
pa...
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It turns out that Try<T> can be ameliorated by judicious application of subclassing: no need to distinguish by actual type in the s...
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Suggestions for some JUnit test improvements in Refactoring the Traditional “for” loop p 181 ff
Below code for testing the original/cla...
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I have been thinking about how to collect “two adjacent elements” in a stream, for example transform a stream of Long into a stream of Pa...
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The filter stream operation appears on several places in Chapter 2 and Chapter 3, so it’s difficult to say where to put this, but there s...
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We read:
We are using the amazing feature of the switch expression of Java [Java 12]. If you’re using an older version of Java, you may...
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A question to highlight is:
Is there a way to make sure that a stream is NOT parallel, and make this evident in the code?
As in:
strea...
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The same remarks apply as for “Refactoring the Traditional for Loop”
No init()
Negative tests which apply for input less than 1900, res...
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As traditional , the “impure” code of page 207 in the form of a pretend test.
(Doesn’t “impure” refer to performing uncontrolled side ef...
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Nothing special here, same changes as formerly, but we are using people.isEmpty() instead of people.size() == 0 for even better legibilit...
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As usual, but the original code to be refactored was just too evil and had to be fixed.
package chapter11;
import org.junit.jupiter.api...
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Although now aged by 34 years:
“The Conception, Evolution, and Application of Functional Programming Languages”
by Paul Hudak (1989-09-...
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The same remarks apply as for “Refactoring the Traditional for Loop”
No init()
Classes under test implement a common interface that is...
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Pragmatic Bookshelf
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