AQI | Air Quality Index history database for mainland China | Caching library
kandi X-RAY | AQI Summary
kandi X-RAY | AQI Summary
Air Quality Index (AQI) history database for mainland China
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Top functions reviewed by kandi - BETA
- Parse page data
- Insert a new record in the pipeline
- insert an area
- Convert given Chinese to pys
- Records data from a page .
- Get a unique ID for a given name
- Build table structs
- Convert zh to pyy code
- Set the total page
AQI Key Features
AQI Examples and Code Snippets
Community Discussions
Trending Discussions on AQI
QUESTION
I have the following component in react
...ANSWER
Answered 2021-May-31 at 09:55componentDidMount()
is a function where its code is executed when the component is mounted, so when you fetch data with in componentDidMount()
, the ${this.state.cityName}
in the URL is still equal to nothing (cityName: ""
in your default state)
- You need to set a default value to
cityName
like
QUESTION
i'm new to React Native and i was working on a project using api from different url's. When i use the fetch to the url's, i want so set my state with setState but when i try it, the console.warn shows my arrays empy. What is the problem in my code? I appreciate any feedback :)
...ANSWER
Answered 2021-May-19 at 02:32setState
does not update the state immediately -- it gets updated on the next render. Assuming you're actually getting data back from your API, your console.warn
is showing the state from the current render.
You can use the callback function (second argument of setState
) to see the value after it's been set.
You can also make all of the updates in one shot by using array spreading.
QUESTION
How can I solve that error in the following code:
...ANSWER
Answered 2021-May-18 at 15:43First of, I suggest not posting your API key publicly, unless you're fine with other people using it.
Second, I can only assume that when you call this API and it doesn't find a location, it returns an error
property or something like that.
So there are two ways you can solve it:
- Use Optional Chaining, i.e. write something like
"City: " + data.location?.name //etc. etc.
- Before you perform the
setCity
operation, check ifdata
has the properties you need or doesn't have anerror
property or something
QUESTION
I'm creating a weather dashboard that updates every 5 seconds. I would like the user to be able to change the target city, and have the dashboard update with the new data. Problem is every time they input a new city, the previous data stays and it seems to be looping through all the inputs the user has made so far.
I would like the data to be updated after the user inputs a new city, rather than added. This is my code:
...ANSWER
Answered 2021-May-11 at 13:15When you create an interval using setInterval()
it continues to execute until the page is reloaded, navigated away from, or explicitly cleared using clearInterval()
. Simply setting more intervals will not stop any previous ones from firing.
Use a globally-scoped variable to store the return value of setInterval()
- check if it's set in the beginning of your submit event handler and clear it if it is.
A simplified example of how you could get this done:
QUESTION
I'm plotting carbon monoxide data, with my x value as a date and my y value as an arithmetic mean.
I've sliced the dataframe up to just show me a single city (Los Angeles)
The x values and y values were objects so I turned the date into datetime and the mean into a float.
I can get it to graph something but what I want is to highlight March and April either by highlighting the back or changing the color of the lines themselves at those months. When I try to do it though each one comes back to me with a tuple error and I'm not understanding why.
Code:
...ANSWER
Answered 2021-May-10 at 04:25plt.subplots()
returns a tuple of figure and subplots, so you should do instead
QUESTION
MyChart.vue
...ANSWER
Answered 2021-May-07 at 07:22First, update your chart.js
version to 2. You can do this by executing the following command.
QUESTION
I am trying to create a webpage where I show the value obtained (from an external link) on progress bar using some sort of slider/indicator. But since I am new to web development I have no idea how to do that can anyone help me out with this? I need to add a slider to my progress bar so that it automatically sets itself on the bar according to value obtained. Thank you Here is the progress I made so far:
...ANSWER
Answered 2021-Apr-22 at 10:00you can reference css position
below is a simple example
QUESTION
I want to change state value of a react state variable only when the previous state change has completed. Is it possible to achieve this since setState in react hooks is asynchronous ?
...ANSWER
Answered 2021-Apr-10 at 07:09You can make use of useEffect,useRef to achieve the result that you want
QUESTION
So my problem is that I am trying to align text from different HStacks. Different sized SFSymbols are causing this problem.
I know that AlignmentGuide can solve my problem but I'm not sure how to implement. If anyone can lend any insight I would be greatly appreciative!
I have watched the WWDC talk on this.
And this is the main screen that relates to this problem,
Yet I need a little clarification of to put it together.
Here is relevant code
...ANSWER
Answered 2021-Apr-09 at 05:36I was able to produce the output you want using these steps:
- Create a custom alignment enum based on AlignmentID and a static instance of it as shown in the slide you linked.
- Add a new VStack around just the part you want to custom align. Otherwise it can affect the alignment of the other components.
- Add an alignmentGuide() on the two Text's that you want to align at their leading edge.
Here is the updated code:
QUESTION
I am trying to fetch data using an weather API on a form submission. For the first call, I get no result and then for the subsequent calls I get the result of the previous form input. What could be causing this ? This is how the on submit handler looks :
...ANSWER
Answered 2021-Apr-08 at 16:28setWeather
is the asynchronous method, and you can't get the updated value of weather
immediately after setWeather
.
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No vulnerabilities reported
Install AQI
PHP requires the Visual C runtime (CRT). The Microsoft Visual C++ Redistributable for Visual Studio 2019 is suitable for all these PHP versions, see visualstudio.microsoft.com. You MUST download the x86 CRT for PHP x86 builds and the x64 CRT for PHP x64 builds. The CRT installer supports the /quiet and /norestart command-line switches, so you can also script it.
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