Zhentiw - 博客园

2017年12月22日

[Recompose] Configure Recompose to Build React Components from RxJS Streams

摘要： Recompose provides helper functions to stream props using an Observable library of your choice into React. This lesson shows you how to configure Reco 阅读全文

posted @ 2017-12-22 02:56 Zhentiw 阅读(236) 评论(0) 推荐(0)

[Python] numpy fillna() for Dataframe

摘要： In the store marketing, for many reason, one stock's data can be incomplete: We can use 'forward fill' and 'backward fill' to fill the gap: forward fi 阅读全文

posted @ 2017-12-22 02:41 Zhentiw 阅读(3284) 评论(0) 推荐(0)

2017年12月21日

[Python] Statistical analysis of time series

摘要： Global Statistics: Common seen methods as such 1. Mean 2. Median 3. Standard deviation: the larger the number means it various a lot. 4. Sum. Rolling 阅读全文

posted @ 2017-12-21 21:30 Zhentiw 阅读(836) 评论(0) 推荐(0)

[Angular] *ngIf syntx

摘要： @{{user.username}} has {{followerCount}} followers button renders here Follow Unfollow 阅读全文

posted @ 2017-12-21 01:27 Zhentiw 阅读(403) 评论(0) 推荐(0)

2017年12月19日

[Python] Boolean Or "Mask" Index Arrays filter with numpy

摘要： NumPy Reference: Indexing Integer array indexing Boolean array indexing Note: The expression a < mean produces a boolean array, like: 阅读全文

posted @ 2017-12-19 20:06 Zhentiw 阅读(637) 评论(0) 推荐(0)

2017年12月18日

[Python] Indexing An Array With Another Array with numpy

摘要： NumPy Reference: Indexing Integer array indexing: Select array elements with another array 阅读全文

posted @ 2017-12-18 21:32 Zhentiw 阅读(277) 评论(0) 推荐(0)

[Python] Accessing Array Elements

摘要： NumPy Reference: Indexing Note: Indexing starts at 0 (zero). def slicing(): a = np.random.rand(5,4) print(a) """ [[ 0.15372787 0.83347785 0.86855635 0 阅读全文

posted @ 2017-12-18 21:21 Zhentiw 阅读(239) 评论(0) 推荐(0)

[Python] ndArray of numpy

摘要： NumPy Reference: Mathematical functions numpy.sum: Sum of elements - along rows, columns or all numpy.min, numpy.max, numpy.mean: Simple statistics Al 阅读全文

posted @ 2017-12-18 21:08 Zhentiw 阅读(192) 评论(0) 推荐(0)

[React] Implement a Higher Order Component with Render Props

摘要： When making a reusable component, you'll find that people often like to have the API they're most familiar with, so in this lesson we'll recreate the 阅读全文

posted @ 2017-12-18 19:50 Zhentiw 阅读(244) 评论(0) 推荐(0)

[React] Implement a React Context Provider

摘要： If you have state that needs to exist throughout your application, then you may find yourself passing props all over the application and even "drillin 阅读全文

posted @ 2017-12-18 15:55 Zhentiw 阅读(277) 评论(0) 推荐(0)

Answer1215

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