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Example 1: A never stop while loop return a never type. Example 2: Never run If block You can use this to do exhaustive checks in union types. For exa 阅读全文
posted @ 2017-02-01 01:36
Zhentiw
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Add functional function such as change state, this should have tests covered. For example, in a component, there is a function call 'addBox': Here we 阅读全文
posted @ 2017-01-31 21:11
Zhentiw
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In React app, you might create lots of components. We can use index.js to do both 'import' & 'export'. When using it, we just need to import the folde 阅读全文
posted @ 2017-01-31 20:08
Zhentiw
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The Chrome console allows you to format messages using CSS properties. This lesson walks you through the syntax of formatting your logs with css then 阅读全文
posted @ 2017-01-31 16:40
Zhentiw
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To understand how change detection can help us improve the proference, we need to understand when it works first. There are some rules which can be ap 阅读全文
posted @ 2017-01-31 01:16
Zhentiw
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micro is a small module that makes it easy to write high performance and asynchronous microservices in Node.js. This video will introduce you to micro 阅读全文
posted @ 2017-01-26 21:41
Zhentiw
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Let's say the message list can Input (messages) from parent component, and what we want to do is when there are new message, we will scroll message li 阅读全文
posted @ 2017-01-26 18:28
Zhentiw
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For the first Effect, will trigger another action: Second effect: will trigger another action: 阅读全文
posted @ 2017-01-26 15:21
Zhentiw
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Observable.prototype.debug = function(message: any) { return this.do( (next) => { if(!environment.production) { console.log(message, next); } }, (err) => { ... 阅读全文
posted @ 2017-01-25 17:05
Zhentiw
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See the current implementaion of code, we have a smart component, and inside the smart component we are using both 'serivce' and 'store'. In the large 阅读全文
posted @ 2017-01-25 03:15
Zhentiw
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