BoOS | Bo's toy OS project | Runtime Evironment library

std::filesystem::exists("\\\\.\\pipe\\myPipe") returning ERROR_PIPE_BUSY means it is using CreateFile() to actually connect to the pipe. It is not unreasonable for an exists() implementation to attempt to open the requested file to check its existance.

Per the CreateFile() documentation:

If there is at least one active pipe instance but there are no available listener pipes on the server, which means all pipe instances are currently connected, CreateFile fails with ERROR_PIPE_BUSY.

Which means the pipe does technically exist, it is not ready to receive a new client at that moment.

In the link you provided, many of the solutions provided suggest using .NET's System.IO.Directory.GetFiles() method to iterate though the contents of "\\.\pipe\". This answer shows how that call translates into Win32 API calls using FindFirstFile() and FindNextFile(). You can easily do the same API calls in C++, eg:

This was a bug in older versions of ffmpeg, triggered in a few cases by copying the timecode track to MP4/MOV output segments. I patched it last June. So upgrade to 4.3 or a recent git build.

I think what you want is:

You can pass the different assert functions as an argument. For example:

First thing, remove "&start=". It doesn't load desired results. So URL should be url = base_url + search_keyword.

Second, the translation is present in , which is a span tag with class value dictionaryLink--369db. Therefore, your search should be spanishdict_soup.find('span', {'class': 'dictionaryLink--369db'}).

Code:

Before the answer ... there's some interesting code in here

There are several ways you can handle this, but you must first understand how to handle asynchronous actions that affect your dom.

Whenever a component mounts (and depending on how you've set your app up, whenever a change is made to props, state, etc), its render function is called. In your example, the component mounts, then asks the server for the list of doctors, calls render(), and then receives the list of doctors from the server. To rephrase, by the time it called the render method, it has not yet received the list of doctors from the axios call.

Apologies if you understood all of this. Now for why this.props.totalDoctorCount is returning undefined: your app's state.totalDoctorCount is not being defined until the function getTotalDoctors resolves (i.e., hears back from server). You can fix this rather simply by defining totalDoctorCount as 0 in your defaultState (where you defined doctors as an empty array).

On the other hand, do you really want users to see/think that there are a total of 0 doctors until the server responds in time? This might be a good opportunity to consider a loading component. What I like to do is right below render(), check for the existence of whatever list you need to iterate through and if it is empty, you can return a LoadingComponent (you can make this on your own and use it wherever something needs to load).

This by itself is not enough, because you don't want the page to load indefinitely in the event that you actually don't have any doctors, so this LoadingComponent should only appear if the function that is retrieving the list that it's concerned with is still 'fetching'. So perhaps you can implement three actions that are called before you fetch, after the fetch is responded to, and if there is an error.

1) MainAdmin mounts.

2) GetDoctors and GetTotalDoctors are called.

3) A new action isFetching is called, leaving your state as:

Not really sure why you're saying that the first 3D array is not efficient (I mean, have you actually noticed a particularly heavy slowdown when using it?), but you can do that with some simple offset calculations.

First of all, if you target the latest C# version, you can replace the whole copy function with just two lines, and your code would then look like this:

Update the PostControllerfunction as below: