scour | Traverse objects and arrays with ease | Reactive Programming library
kandi X-RAY | scour Summary
kandi X-RAY | scour Summary
Traverse objects and arrays immutably.
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- Iterate over an array
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QUESTION
I have been trying to get my code to work for many days, I am desperate. I've scoured the internet, but I still can't find it.
I have a text file encoded in "latin-1" of 9GB -> 737 022 387 lines, each line contains a string.
I would like to read each line and send them in an http PUT request that waits for a response, and returns TRUE or FALSE if the response is 200 or 400 The PUT request takes about 1 to 3 seconds, so to speed up the processing time I would like to use either a Thread or a multiprocessing.
To start, I simulate my PUT request with a sleep of 3 seconds. and even that I can't get it to work
This code split my string into char, i don't know why...
...ANSWER
Answered 2022-Apr-11 at 09:49Although the problem seems unrealistic though. shooting 737,022,387 requests! calculate how many months it'll take from single computer!!
Still, Better way to do this task is to read line by line from file in a separate thread and insert into a queue. And then multi-process the queue.
Solution 1:
QUESTION
I'm relatively new to coding and entirely self taught, so please have patience with me.
I've been scouring the internet for an answer to this, but everything I've found is either waaaaaaayyy too technical and looks like ancient greek, or doesn't even apply to my situation.
I'm developing an app for work for my managers to record employee information. The page I'm currently working on is for injuries, however this will apply to multiple pages if I can figure it out. I know I'm probably over-complicating something and it's going to be a stupid answer but I've tried everything I can think of so far.
What I'm trying to do is capture handwritten notes as images and then save them to a database for us in the office to type up and translate if needed. (a lot of my managers don't type) but this would apply to collecting multiple signatures as well i.e. on write ups.
I've got the images saved, but when it comes time to write them to the database, the first image will write just fine, but the second one I start getting the "Data type mismatch in the criteria expression" error.
I've tried isolating the 2nd and third images to see if it's a syntax issue, but I still get the error. I've rebuilt the database table to make sure the destination field is an OLE object, same error. I've been searching for a few days now for the answer and I'm not finding it, so if someone can please help.
I know it's going to be something silly like not disposing of something in the right place, but that is beyond my current knowledge. Thank you in advance for any help.
...ANSWER
Answered 2022-Mar-30 at 18:40Some entities use "unmanaged resources" which need to be explicitly taken care of by calling Dispose() on them. There is a way to have that happen automatically for you: the Using statement.
As it happens, both database connections (e.g. OleDbConnection) and the Image type are such entities.
Here is an example of how you could modify your code:
QUESTION
Okay so I have scoured the internet for an example of how to do this but unfortunately I am not able to do so. Basically I have a componenet structure like this:
App.js
...ANSWER
Answered 2022-Feb-17 at 21:56Yes, it still needs to be imported in the file using it, i.e. import { useOutletContext } from 'react-router-dom';.
QUESTION
I have been using the #[tokio::main] macro in one of my programs. After importing main and using it unqualified, I encountered an unexpected error.
ANSWER
Answered 2022-Feb-15 at 23:57#[main] is an old, unstable attribute that was mostly removed from the language in 1.53.0. However, the removal missed one line, with the result you see: the attribute had no effect, but it could be used on stable Rust without an error, and conflicted with imported attributes named main. This was a bug, not intended behaviour. It has been fixed as of nightly-2022-02-10 and 1.59.0-beta.8. Your example with use tokio::main; and #[main] can now run without error.
Before it was removed, the unstable #[main] was used to specify the entry point of a program. Alex Crichton described the behaviour of it and related attributes in a 2016 comment on GitHub:
Ah yes, we've got three entry points. I.. think this is how they work:
- First,
#[start], the receiver ofint argcandchar **argv. This is literally the symbolmain(or what is called by that symbol generated in the compiler).- Next, there's
#[lang = "start"]. If no#[start]exists in the crate graph then the compiler generates amainfunction that calls this. This functions receives argc/argv along with a third argument that is a function pointer to the#[main]function (defined below). Importantly,#[lang = "start"]can be located in a library. For example it's located in the standard library (libstd).- Finally,
#[main], the main function for an executable. This is passed no arguments and is called by#[lang = "start"](if it decides to). The standard library uses this to initialize itself and then call the Rust program. This, if not specified, defaults tofn mainat the top.So to answer your question, this isn't the same as
#[start]. To answer your other (possibly not yet asked) question, yes we have too many entry points.
QUESTION
I have a number input:
This question has a similar answer, but I am trying to scour the internet to see if there is a better answer to it.
EDIT: I have found the answer that works to it, and I am looking for something of a one liner that would work. Something like the max = '4' or the input's version of it maxlength = '4'
...ANSWER
Answered 2022-Jan-21 at 18:13You can use the maxlength attribute to do this:
QUESTION
I am trying to download a file using AlamoFire and save it to a downloads directory of the user's choice (like safari). However, whenever I set the download directory to a folder outside of my app's documents, I get the following error (on a real iOS device):
downloadedFileMoveFailed(error: Error Domain=NSCocoaErrorDomain Code=513 "“CFNetworkDownload_dlIcno.tmp” couldn’t be moved because you don’t have permission to access “Downloads”." UserInfo={NSSourceFilePathErrorKey=/private/var/mobile/Containers/Data/Application/A24D885A-1306-4CE4-9B15-952AF92B7E6C/tmp/CFNetworkDownload_dlIcno.tmp, NSUserStringVariant=(Move), NSDestinationFilePath=/private/var/mobile/Containers/Shared/AppGroup/E6303CBC-62A3-4206-9C84-E37041894DEC/File Provider Storage/Downloads/100MB.bin, NSFilePath=/private/var/mobile/Containers/Data/Application/A24D885A-1306-4CE4-9B15-952AF92B7E6C/tmp/CFNetworkDownload_dlIcno.tmp, NSUnderlyingError=0x281d045d0 {Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"}}, source: file:///private/var/mobile/Containers/Data/Application/A24D885A-1306-4CE4-9B15-952AF92B7E6C/tmp/CFNetworkDownload_dlIcno.tmp, destination: file:///private/var/mobile/Containers/Shared/AppGroup/E6303CBC-62A3-4206-9C84-E37041894DEC/File%20Provider%20Storage/Downloads/100MB.bin)
The summary of that error is that I don't have permission to access the folder I just granted access to.
Here's my attached code:
...ANSWER
Answered 2022-Jan-18 at 22:24After some research, I stumbled onto this Apple documentation page (which wasn't found after my hours of google searching when I posted this question)
https://developer.apple.com/documentation/uikit/view_controllers/providing_access_to_directories
Navigate to the Save the URL as a Bookmark part of the article.
Utilizing a SwiftUI fileImporter gives one-time read/write access to the user-selected directory. To persist this read/write access, I had to make a bookmark and store it somewhere to access later.
Since I only needed one bookmark for the user's downloads directory, I saved it in UserDefaults (a bookmark is very small in terms of size).
When saving a bookmark, the app is added into the Files and folders in the user's settings, so the user can revoke file permissions for the app immediately (hence all the guard statements in my code snippet).
Here's the code snippet which I used and with testing, downloading does persist across app launches and multiple downloads.
QUESTION
Is there a way to prevent Django from trimming leading white space in models.TextField? I've been scouring the docs and haven't found anything. The database I'm using is PSQL. Any guidance would be appreciated.
An answer made me aware there is a solution using forms. As of right now, I don't use forms:
...ANSWER
Answered 2021-Nov-30 at 16:01Yes, you form field should set strip=False [Django-doc] in the form, so:
QUESTION
I am creating a database for a large monitoring project. I have already set up the schema on the database and am now trying to populate the tables. I am using R's DBI:: package to transfer data from R to SQL. I have been successful in transferring all datatype except for my spatial data. For the tabular data I have been using DBI::dbWriteTable() However, from scouring other posts, it seems like loading spatial data is better done using the sf::st_write() function in the sf:: package. However, I am getting several errors:
In my local instance of SQL Server, I am getting an error that I am not providing a valid instance of datatype geometry. The reproducible example below will throw this error.
On my network instance of SQL Server, I am getting an error
Invalid object name 'spatial_ref_sys'Unfortunately, I was unable to reproduce this error with example data.
N.B.: In the code below, you will need to replace the name of your local instance of sql server in the connection strings
...ANSWER
Answered 2021-Oct-22 at 23:03After much tinkering I think I found the solution. Admittedly it's a bit of a workaround, but it isn't too ugly. Instead of trying to write a single column, I wrote the entire table using sf::st_write(). Importantly, while I could not find a way to write geometries directly into SQL, I found out that I could write a Well-Known-Text to SQL. Once it was in the SQL database I used the geometery::STGeomFromText() stored procedure to convert from WKT to geometry. Below is the updated code:
N.B.: Change the server to the name of your sql server instance in the connection strings below for reproducibility
QUESTION
I'm looking to create/update a new column, 'dept' if the text in column A contains a string. It's working without a forloop involved but when I try to iterate it is setting the default instead of the detected value.
Surely I shouldn't manually add the same line 171 times, I've scoured the internet and SO for possible hints and or solutions and can't seem to locate any good info.
Working Code:
...ANSWER
Answered 2021-Oct-20 at 01:25We usually do
QUESTION
I'm creating a local mirror of NVD hosted vulnerability files.
My code is currently connecting to the database, running a check to pull down the current files, then proceeding to cycle through those files to see if there is new CVE data inside the .json files daily.
I started receiving the following error this morning when my code was cycling through the update check of the individual CVE data.
_mysql_connector.MySQLInterfaceError: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE ID = 'CVE-2014-4611'' at line 1.
During handling of the above exception, another exception occurred:
Traceback (most recent call last): File "c....2_add_cvestodb.py", line 134, in mycursor.execute(sql_update_query, val_update_query)
Below is the code block in question.
...ANSWER
Answered 2021-Sep-22 at 16:21This:
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