Sylvan | NET libraries , including the fastest CSV parser | CSV Processing library
kandi X-RAY | Sylvan Summary
kandi X-RAY | Sylvan Summary
Sylvan is a collection of .NET libraries and tools. All of these libraries have a focus on very high-performance while remaining easy to use. Indeed, most of these libraries are the fastest of their class in the .NET ecosystem. A collection of common utility types. A library containing some types for working with ADO.net data objects. An extremely fast, lightweight library for reading and writing delimited CSV data. A data reader for Excel (.xls, and .xlsx) data files. A data reader for dBASE/FoxPro/Clipper .dbf files. This is the format used to store metadata in ESRI ShapeFiles.
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QUESTION
@MarkPflug I have a requirement to read 12 columns out of 45 - 85 total columns. This is from multiple csv files (in the hundreds). But here is the problem, a lot of the times a column or two will be missing from some csv data files. How do I check in C# for a missing column in a csv file given I use the nuget package sylvan csv reader. Here is some code:
...ANSWER
Answered 2022-Mar-11 at 22:36Looking at the source, it appears that GetOrdinal throws if the column name isn't found or is ambiguous. As such I expect you could do:
QUESTION
ORIGINAL QUERY: Currently i wanted to switch from 32 bit builds to 64 bit, but i have trouble with finiding any library to extract data from xls. I can work with others like (xlsx, xlsm) on ClosedXML, unfortunately xls is not supported.
so right now this connexction will not stand.
...ANSWER
Answered 2022-Jan-18 at 16:41You can check out my library Sylvan.Data.Excel. It has no external dependencies, is cross plat, open-source, MIT licensed, and also the fastest Excel data reader for .NET. It supports both .xls, .xlsx, and .xlsb all through the same API. It is not as fully featured as some other libraries, it only supports reading (not writing), but it should be a pretty direct replacement for ACE, because it implements DbDataReader
. If you run into any issues/questions feel free to open them in the GitHub repo.
Using it is pretty straightforward:
QUESTION
I'm trying to play back a live video stream from a local network camera, through ROS (Robot Operating System) using VideoPlayer in SwiftUI. But the stream keeps failing. Here is what I tried:
Using this article I tried the below. https://www.hackingwithswift.com/quick-start/swiftui/how-to-play-movies-with-videoplayer
Code:
...ANSWER
Answered 2021-Nov-26 at 08:08So, I figured out that the stream is a MJPEG stream and the AVPlayer doesen't support that. Therefore it only shows the first frame.
So I've implemented a camera service that fetches the MJPEG stream, like this:
QUESTION
I can't seem to figure out why I keep getting 1st and 3rd row. I am skipping 2nd for some reason. Here's my code
...ANSWER
Answered 2021-Jun-07 at 02:17I believe the issue is that you are globally defining i
, so outputAuthors is changing the index for outputBooks. This can easily be fixed by changing the code in both for loops to for (let i = 0 ...
so that each scope has it's own variable i
QUESTION
following are my files for html, .ts and json . As json data was very extensive therefore i have just added a few states and their cities. my 1st dropdown is showing all states. Now I want to match my 1st dropdown's selected value of state with a key "state" in "cities" object in my json file so i can populate 2nd dropdown with cities relevant to that state. and I want to do this in function "getCitiesForSelectedState". please help me find solution for this.
//.ts file
...ANSWER
Answered 2021-Apr-27 at 16:44You can do it with the $event
parameter.
Make sure to compare your values safely.
If your value is not in the right type or has spaces or unwanted chars, this c.state == val
might not work.
You can use the trim
function to compare your value safely:
c.state.trim() == val.trim()
HTML
QUESTION
I've got a data table that matches this structure:
...ANSWER
Answered 2020-Aug-21 at 08:38Use any
:
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