es6-map | Map collection as specified in ECMAScript6 | Map library
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Map collection as specified in ECMAScript6
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QUESTION
As I need a Map where a key is associated not only with value but also with some metadata - like 'weight' or 'timeToLive', I was trying to use Map-based structure in form like class MdaMap extends Map>. As answered in Implementing ES6 Map augmented with metadata in Typescript it isn't good approach. Second option would be a wrapper object around a Map but feels like meh. So I thought about third option: reimplementing Map.
So I make a class that has to hold records of 3 kinds: keys, values and metadata.
...ANSWER
Answered 2018-Oct-02 at 21:05You don't need to re-implement Map; just use it with a tuple as the contents:
QUESTION
Trying to implement web-hook (with V2 dialogflow) running nodejs. Received response "MalformedResponse 'final_response' must be set.". Below is the code. To the end of POST (app.post) code block was expecting conv.close would send SimpleResponse. But that's not happening. Need help understand why this error is seen and probable direction to solve it.
Thanks
...ANSWER
Answered 2018-Aug-30 at 18:03In general, The "final_response" must be set error is because you didn't send anything back. You have a lot going on in your code, and while you're on the right track, there are a few things in the code that could be causing this error.
First - in the code, it looks like you are confused about how to send a response. You have both a call to conv.close() and the commented out assistant.tell(). The conv.close() or conv.ask() methods are the way to send a reply using this version of the library. The tell() method was used by a previous version and is no longer supported.
Next, your code looks like it is only setting up the assistant object when the routing function is called. While this can be done, it is not the usual way to do it. Typically you'll create the assistant object and setup the Intent handlers (using assistant.intent()) as part of the program initialization. This is a rough equivalent to setting up the express app and the routes for it before the request itself comes in.
The portion that sets up the Assistant and then hooks it into a route might look something like this:
QUESTION
In this topic : Simplest way to merge ES6 Maps/Sets?
I found a nice way to merge Set or Map
let set3 = new Set(function*() { yield* set1; yield* set2; }());
I would like to make a function that can merge any number of Sets like so :
...ANSWER
Answered 2018-Aug-30 at 09:54You're using your arguments inside the inner function*, which is immediately invoked without arguments, so the arguments are empty, so iterating over it results in the returned set being empty. I would use parameter rest syntax instead, in the outer function, to collect the arguments into a proper array, and then you can iterate over the array:
(Open your browser console, not the snippet console, to see the resulting Set:)
QUESTION
Can I improve my code and replace for-loop by array.map?
I searched and I think I could do that but I didn't find how could I apply that.
This is what I found :
...ANSWER
Answered 2018-Mar-06 at 10:13 public getFlights(): Observable {
return this.http
.get(this.apiHostFlights)
.map((res: any) => {
return res.json();
})
.map((items: LocationModelItem[]) => {
return items.map((item, index) => ({
index: index,
name: item.name,
img: item.img,
category: item.category)
}))
})
.catch((error: any) => {
return Observable.throw(error.statusText);
});
}
QUESTION
I'm trying to write a method which will help me return an array of the object keys of all the currencies based on a specific country. But, right now, what I get is list of all the currencies in an array.
I primarily need to use ES6 methods. I wouldn't want to use any other iterators.
For e.g. : What I need:
When I want the filter to be applied based on the country code 'US', it should return an array with currency ['USD'];
...ANSWER
Answered 2018-Feb-21 at 06:47Given a country code you can use array syntax to access the tree of JSON for the country. (you may want to check if the code exists first)
QUESTION
I'm trying to build my ionic app with --prod flag but I'm getting issues doing it.
After upgrading to ionic 3.18, some time ago, there was some problems and I couldn't run my app anymore. I forgot what were the problems but I solved them somehow with some tweakings in my package.json, if I remember well, and I was able to run the app.
But since that, I can't get it to build with --prod flag (but it works fine without).
Today I was looking into this problem and tried deleting my node_modules and rebuilding it following this advice. It solved the specific issue there was, but I still cannot build the app.
Here is the result of rebuilding node_modules folder running npm i: (I removed a few lines without any error in the middle, because it was too long to post otherwise.)
ANSWER
Answered 2017-Dec-07 at 00:24Most of them were warnings. So you don't need to worry about those things.
You have done a number of things which were against the Ionic 3.9.2. You must never use the latest angular since the Ionic team has not tested it yet. e.g. You used angular ^5.0.1. You need to follow this official package.json file.And also don't use ^ with angular versions.
Your typescript version too very higher one. You need to follow this:
QUESTION
I have created a nodejs api project using typescript. But I am not able to start it. This is the command I am running
...ANSWER
Answered 2017-Sep-27 at 06:36The issue was with typescript itself. Here is the issue raised on Github
https://github.com/Microsoft/TypeScript/issues/18301
but now the issue has been fixed.
Just update typescript module
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