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Functor composition is a powerful concept that arises when we have one Functor nested in another Functor. It becomes even more powerful when both of t 阅读全文
posted @ 2019-01-18 17:52
Zhentiw
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We want to be able to pick nine random cards from an array of twelve cards, but can run into problems of keeping both the cards already draw and the c 阅读全文
posted @ 2019-01-17 21:47
Zhentiw
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Using the optional “+” sign together with mapped type modifiers, we can create more explicit and readable type declarations. We can also use the “-” ( 阅读全文
posted @ 2019-01-17 19:46
Zhentiw
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JPA is just like a helper class for providing data for Controller, has method like 'findOne', 'findAll', 'saveAndFlush', 'delete'. in repository/Shipw 阅读全文
posted @ 2019-01-16 20:53
Zhentiw
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Just like the State ADT an Array is also an Applicative Functor. That means we can do the same tricks with liftA2 with Array that we have been doing w 阅读全文
posted @ 2019-01-16 16:30
Zhentiw
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Custom elements are fun technology. In this video, you will learn how to set one up and running in less than 2 minutes. You'll learn how to create a C 阅读全文
posted @ 2019-01-16 15:54
Zhentiw
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In JavaScript, we often end up composing one object out of several other objects. Luckily there's a convenient spread operator which allows us to spre 阅读全文
posted @ 2019-01-16 15:45
Zhentiw
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Sometimes we might want to make a function more generic by having it accept a union of different types as an argument. Using the JavaScript “in” opera 阅读全文
posted @ 2019-01-15 20:47
Zhentiw
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The resultant in a State ADT instance can be used as a means of communication between different stateful transactions. It can be used to read and tran 阅读全文
posted @ 2019-01-15 20:24
Zhentiw
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We need our data persistence with configuring our datasouce: In application.properties: " " tells to save the in memory data into a file called 'gs-sp 阅读全文
posted @ 2019-01-14 21:55
Zhentiw
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