kandi X-RAY | docs Summary
kandi X-RAY | docs Summary
本仓库保存了 MeterSphere 项目 的 官方文档，该文档使用 MkDocs 文档框架下的 Material for MkDocs 主题进行构建。.
Top functions reviewed by kandi - BETA
docs Key Features
docs Examples and Code Snippets
Trending Discussions on docs
I am using a script to recursively list all the files in a Google drive folder to a spreadsheet. It is working fine but i need to sort the file listing by size ( highest size on top ). Also drive api returns value of size in bytes but i need them in GB's . I haven't found any way to do it through api directly ,so i want to divide the size value of each file by 1073741824 upto 1 decimal rounding it off ( 1 GB = 1073741824 bytes )...
ANSWERAnswered 2021-Jun-16 at 02:55
- In your script, the values are put to the Spreadsheet using
appendRowin the loops. In this case, the process cost will be high. Ref And also, in this case, after the values were put to the Spreadsheet, it is required to sort the sheet.
- So, in this answer, I would like to propose the following flow.
- Retrieve the file list and put to an array.
- Sort the array by the file size.
- Put the array to the Spreadsheet.
When above points are reflected to your script, it becomes as follows.Modified script:
Giving a bit of context. I'm using c++17. I'm using pointer
T* data because this will interop with cuda code. I'm trying write a parallel version (on CPU) of a histogram creator. The sequential version:
ANSWERAnswered 2021-Jun-16 at 00:46
The issue you are having has nothing to do with templates. You cannot invoke
std::async() on a member function without binding it to an instance. Wrapping the call in a lambda does the trick.
Here's an example:
Can someone help me investigate why my Chainlink requests aren't getting fulfilled. They get fulfilled in my tests (see hardhat test etherscan events(https://kovan.etherscan.io/address/0x8Ae71A5a6c73dc87e0B9Da426c1b3B145a6F0d12#events). But they don't get fulfilled when I make them from my react app (see react app contract's etherscan events https://kovan.etherscan.io/address/0x6da2256a13fd36a884eb14185e756e89ffa695f8#events).
Same contracts (different addresses), same function call.
Here's the code I use to call them in my tests...
ANSWERAnswered 2021-Jun-16 at 00:09
Remove your agreement vars in
MinimalClone.sol, and either have the user input them as args in your
init() method or hardcode them into the request like this:
Question: What is the "best" (most idiomatic, or straightforward, or whatever you think 'best' should mean here) way to achieve that?
Examples run in the
Raku REPL follow.
What I was hoping would work...
ANSWERAnswered 2021-Jun-15 at 06:40
I think the main misunderstanding is that
my Int @a = 1,2,3 and
[1,2,3] are somehow equivalent. They are not. The first case defines an array that will only take
Int values. The second case defines an array that will take anything, and just happens to have
Int values in it.
I'll try to cover all versions you tried, why they didn't work, and possibly how it would work. I'll be using a bare
dd as proof that the body of the function was reached.
In part of my application I have an option that displays a list of albums by the current artist that aren't in the music library. To get this I call a music API to get the list of all albums by that artist and then I remove the albums that are in the current library.
To cope with the different casing of names and the possibility of missing (or extra punctuation) in the title I have written an
IEqualityComparer to use in the
ANSWERAnswered 2021-Jun-15 at 23:05
Defines the string comparison options to use with CompareInfo.
I am a beginner in Data Science, so please sorry if my mistake is dumb.
Here, I have a loop which views my data frame and makes changes using .loc The problem is that the changes are not saved at the end. I checked every step, everything is processing right. I even checked the modified cell right after working on it (look below) and its gives the value I put into it. However, when the program finishes the my excel data frame is not changed at all.
Help please. Thank you in advance!...
ANSWERAnswered 2021-Jun-13 at 21:56
when the program finishes my excel data frame is not changed at all.
That's because you never wrote anything to the Excel file. With
exc = pd.read_excel('...') you create a Python object
exc (more specifically, a pandas DataFrame), and all the subsequent modifications happen to this object. To change the source file accordingly, you can use pandas'
DataFrame.to_excel() method, by adding this line in the end:
I am trying to execute
reply_count using the Twitter Tweepy API, but I can't find proper updated documentation on how to do it.
I have some working code from Tweepy for Twitter API version 1 to get some data I use, but I cant find good info about how to extract
quote_count using Twitter API version 2 via Tweepy.
ANSWERAnswered 2021-Jun-15 at 22:22
Tweepy v3.10.0 does not support Twitter API v2. You'll have to use the latest development version of Tweepy on the master branch or wait for Tweepy v4.0 to be released.
As that documentation says, you need to pass the specific fields and expansions you want when making the API request. For example, for the version currently on the master branch, the equivalent of the public metrics example request in that documentation would be:
I'm currently using Winsock2 to be able to test a connection to multiple local
telnet servers, but if the server connection fails, the default Winsock client takes forever to timeout.
I've seen from other posts that
select() can set a timeout for the connection part, and that
timeval can timeout the receiving portion of the code, but I have no idea how to implement either. Pieces of code that I've copy/pasted from other answers always seem to fail for me.
How would I use both of these functions in the default client code? Or, if it isn't possible to use those functions in the default client code, can someone give me some pointers on how to use those functions correctly?...
ANSWERAnswered 2021-Jun-15 at 21:17
select()can set a timeout for the connection part.
Yes, but only if you put the socket into non-blocking mode before calling
connect(), so that
connect() exits immediately and then the code can use
select() to wait for the socket to report when the connect operation has finished. But the code shown is not doing that.
timevalcan timeout the receiving portion of the code
select() can also be used to timeout a read operation, as well. Simply call
select() first, and then call
recv() only if
select() reports that the socket is readable (has pending data to read).
Try something like this:
In C++20, we got the capability to sleep on atomic variables, waiting for their value to change.
We do so by using the
wait has been standardized,
wait_until are not. Meaning that we cannot sleep on an atomic variable with a timeout.
Working around the above problem (no way to sleep on an atomic variable with a timeout), I could pass the memory address of an
WaitOnAddress on Windows and it will (kinda) work with no UB, as the function gets
void* as a parameter, and it's valid to cast
On Linux, it is unclear whether it's ok to mix
futex gets either a
uint32_t* or a
int32_t* (depending which manual you read), and casting
u/int* is UB. On the other hand, the manual says
The uaddr argument points to the futex word. On all platforms, futexes are four-byte integers that must be aligned on a four- byte boundary. The operation to perform on the futex is specified in the futex_op argument; val is a value whose meaning and purpose depends on futex_op.
alignas(4) std::atomic should work, and it doesn't matter which integer type is it is as long as the type has the size of 4 bytes and the alignment of 4.
So what is the best way to sleep on an atomic variable with a timeout in a non UB way? Do we have to implement our own atomic class with OS primitives to achieve it correctly?
(Solutions like mixing atomics and condition variables exist, but sub-optimal)...
ANSWERAnswered 2021-Jun-15 at 20:48
You shouldn't necessarily have to implement a full custom
atomic API, it should actually be safe to simply pull out a pointer to the underlying data from the
atomic and pass it to the system.
std::atomic does not offer some equivalent of
native_handle like other synchronization primitives offer, you're going to be stuck doing some implementation-specific hacks to try to get it to interface with the native API.
For the most part, it's reasonably safe to assume that first member of these types in implementations will be the same as the
T type -- at least for integral values . This is an assurance that will make it possible to extract out this value.
... and casting
This isn't actually the case.
std::atomic is guaranteed by the standard to be Standard-Layout Type. One helpful but often esoteric properties of standard layout types is that it is safe to
T to a value or reference of the first sub-object (e.g. the first member of the
As long as we can guarantee that the
std::atomic contains only the
u/int as a member (or at least, as its first member), then it's completely safe to extract out the type in this manner:
I would like to extract the definitions from the book The Navajo Language: A Grammar and Colloquial Dictionary by Young and Morgan. They look like this (very blurry):
I tried running it through the Google Cloud Vision API, and got decent results, but it doesn't know what to do with these "special" letters with accent marks on them, or the curls and lines on/through them. And because of the blurryness (there are no alternative sources of the PDF), it gets a lot of them wrong. So I'm thinking of doing it from scratch in Tesseract. Note the term is bold and the definition is not bold.
How can I use Node.js and Tesseract to get basically an array of JSON objects sort of like this:...
ANSWERAnswered 2021-Jun-15 at 20:17
Tesseract takes a
lang variable that you can expand to include different languages if they're installed. I've used the UB Mannheim (https://github.com/UB-Mannheim/tesseract/wiki) installation which includes a ton of languages supported.
To get better and more accurate results, the best thing to do is to process the image before handing it to Tesseract. Set a white/black threshold so that you have black text on white background with no shading. I'm not sure how to do this in Node, but I've done it with Python's OpenCV library.
If that font doesn't get you decent results with the out of the box, then you'll want to train your own, yes. This blog post walks through the process in great detail: https://towardsdatascience.com/simple-ocr-with-tesseract-a4341e4564b6. It revolves around using the jTessBoxEditor to hand-label the objects detected in the images you're using.
Edit: In brief, the process to train your own:
- Install jTessBoxEditor (https://sourceforge.net/projects/vietocr/files/jTessBoxEditor/). Requires Java Runtime installed as well.
- Collect your training images. They want to be .tiffs. I found I got fairly accurate results with not a whole lot of images that had a good sample of all the characters I wanted to detect. Maybe 30/40 images. It's tedious, so you don't want to do TOO many, but need enough in order to get a good sampling.
- Use jTessBoxEditor to merge all the images into a single .tiff
- Create a training label file (.box)j. This is done with Tesseract itself.
tesseract your_language.font.exp0.tif your_language.font.exp0 makebox
- Now you can open the box file in jTessBoxEditor and you'll see how/where it detected the characters. Bounding boxes and what character it saw. The tedious part: Hand fix all the bounding boxes and characters to accurately represent what is in the images. Not joking, it's tedious. Slap some tv episodes up and just churn through it.
- Train the tesseract model itself
- save a file:
font_propertieswho's content is
font 0 0 0 0 0
- run the following commands:
tesseract num.font.exp0.tif font_name.font.exp0 nobatch box.train
shapeclustering -F font_properties -U unicharset -O font_name.unicharset font_name.font.exp0.tr
mftraining -F font_properties -U unicharset -O font_name.unicharset font_name.font.exp0.tr
You should, in there close to the end see some output that looks like this:
Master shape_table:Number of shapes = 10 max unichars = 1 number with multiple unichars = 0
That number of shapes should roughly be the number of characters present in all the image files you've provided.
If it went well, you should have 4 files created:
shapetable. Rename them all with the prefix of
your_language from before. So e.g.
your_language.traineddata is the model. Copy that into your Tesseract's data folder. On Windows, it'll be like:
C:\Program Files x86\tesseract\4.0\tessdata and on Linux it's probably something like
Then when you run Tesseract, you'll pass the
lang=your_language. I found best results when I still passed an existing language as well, so like for my stuff it was still English I was grabbing, just funny fonts. So I still wanted the English as well, so I'd pass:
No vulnerabilities reported
Reuse Trending Solutions
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page