随笔分类 - Compose
摘要：Let's we want to combine two account accidently have the same name. So, here we can use Semi-group to combine them, because the semi-group have the kn
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摘要：An introduction to concatting items via the formal Semi-group interface. Semi-groups are simply a type with a concat method that are associative. We d
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摘要：For if..else:
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摘要：We define the Either type and see how it works. Then try it out to enforce a null check and branch our code. Now, we try to make Box more useful. We w
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摘要：After understanding how Box is, then we are going to see how to use Box to refacotr code, to un-nested expression. For example, we have code: So how i
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摘要：We'll examine how to unnest function calls, capture assignment, and create a linear data flow with a type we call Box. This is our introduction to wor
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