conn | Interfaces - Documentation is at https : //periph
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Top functions reviewed by kandi - BETA
- atod returns the decimal representation of s .
- Search searches for a device and returns a list of addresses .
- floatAsString returns a string representation of v .
- nanoAsString returns a string representation of v .
- picoAsString returns a string representation of v .
- Register registers a new Openener .
- splitStages creates a list of stages for each driver .
- decimalMul returns the result of a and b .
- dtoi converts decimal decimal to decimal .
- LessNatural compares two strings .
conn Key Features
conn Examples and Code Snippets
package main
import (
"time"
"periph.io/x/conn/v3/gpio"
"periph.io/x/host"
"periph.io/x/host/rpi"
)
func main() {
host.Init()
t := time.NewTicker(500 * time.Millisecond)
for l := gpio.Low; ; l = !l {
rpi.P1_33.Ou
Community Discussions
Trending Discussions on conn
QUESTION
I want save photo and add name of file and text of message to database.(Also in this database I have status of request and user, how make request, this 2 columns works ok)
Database:
...ANSWER
Answered 2021-Jun-15 at 11:53You are writing message.text
into the database inside the photo
function. However, that function is only triggered for messages containing a photo
. When the message
contains a photo, message.text is None
. Any caption the photo might have will be in message.caption
.
QUESTION
I am trying to create an app in which the user has the option to query the database by entering information into one of two entry boxes. I want to be able to use a single select statement and conditionally query the database based on what box the user enter their information into. I currently am trying to use a CASE clause, but I believe that it is running into an error when I try to include a WHERE clause in the THEN argument. Here is what I am currently working with:
...ANSWER
Answered 2021-Jun-15 at 19:54Move the CASE
expression to the WHERE
clause:
QUESTION
I want to use the built-in secrets feature in .NET Core
and it is not working for me and I don't understand why I am doing exactly what is needed. I would appreciate it if you can help me and let me know what is missing.
In the developers commands I run this:
...ANSWER
Answered 2021-Jun-15 at 17:49You have a typo (fix "n" to "nn"): ConectionStrings
should be ConnectionStrings
.
You can remove the old one and create a new one with these commands:
QUESTION
I've created a simple VBA interface to connect Excel to a MySQL DB. The VBA part acts as a preview of data for the user to choose what item he wants to import to the Excel sheet.
Until now I've work with a very complete set of data, but I got to a Table which (because of the nature of the items) some fields are NULL.
Now every time I try to check the values in the VBA I get the Run-time error 13 Type mismatch in the listview component. At first I though it was a field with DECIMAL typing, but after changing it to a DOUBLE (for testing) the problem persisted, and it was until I notice that if only checks columns with no NULL value, the problem disappears. Off course I can't omit this values.
I tried some .Tostring functions but with no success. And I failed to implement a IF to check for NULL in the obj.
This is my code:
...ANSWER
Answered 2021-Apr-13 at 10:28If you don't want to add a IsNull
-function in you SQL (as Nathan_Sav suggested as a comment): There is a IsNull
-function in VBA. With that, you can create a simple function that returns for example an empty string (or a 0 or whatever you prefer):
QUESTION
Running this code to normalize json:
...ANSWER
Answered 2021-Jun-15 at 10:59This is not consumed by json_normalize
directly (after my tries). Since the number of BUY
and SELL
are different, and these record do not neccessarily should match each other (located on a same row), suggestions is to split into two dataframes and then concatenate.
QUESTION
I'm implementing a simple task queue using redis in Rust, but am struggling to deserialize the returned values from redis into my custom types.
In total I thought of 3 approches:
- Deserializing using serde-redis
- Manually implementing the
FromRedisValue
trait - Serializing to String using serde-json > sending as string > then deserializing from string
The 3rd approach worked but feels artificial. I'd like to figure out either 1 or 2, both of which I'm failing at.
Approach 1 - serde-redisI have a simple Task definition:
...ANSWER
Answered 2021-Jun-15 at 09:55Redis doesn't define structured serialization formats. It mostly store strings and integers. So you have to choose or define your format for your struct.
A popular one is JSON, as you noticed, but if you just want to (de)serialize simple pairs of (id, description), it's not very readable nor convenient.
In such a case, you can define your own format, for example the id and the description with a dash in between:
QUESTION
When I run the following code in python 3.8.5 from an Ubuntu Server:
...ANSWER
Answered 2021-Apr-07 at 10:06I answer by myself referencing this GitHub issue: https://github.com/psf/requests/issues/4775
I solved the problem using the code below:
QUESTION
so im developing website using nodejs, and then deploying it to microsoft azure, and using Azure Database for mysql server to be exact, and importing my databse using mysql workbench, now the problem is in the CORS, everyhting going well i run it on chrome and firefox in the same pc works fine, but when i try to acces the website using another pc, i get the error says "Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://localhost:3000/data/price%20asc. (Reason: CORS request did not succeed)".
heres my nodejs code:
...ANSWER
Answered 2021-Jun-15 at 09:41If you are using Azure app service to host your nodejs app,the most fastest way to config CORS on Azure Portal => app service => CORS :
I did some test on my side and this is my nodejs server code(as you can see, no config for CORS) :
QUESTION
Current situation : I have one GUI program(written by python) which using sqlite data stored on my computer.
Wishlist: I would like to have one server computer to locate sqlite data (DATA A1) (CRUD operation needed) and ten more client computer using GUI program(written by python) which connect with the sqlite data (DATA A1) on lan.
I have no idea how to set up this program and server and what I need to learn more.
Current example code for check product in shop:
...ANSWER
Answered 2021-Jun-15 at 04:15Don't do that. Sqlite
is a simple, in-memory, single-process database. If you need a database server, then use a database server. There are many choices.
QUESTION
I have been studying and learning PHP and MySQL and I have started a system that I'm developing for a friend's little school and to help me to improve my learning. I basically have in this case a table with the names of the students (tb_std) and another with the names of the teachers (tb_tch). The work is to distribute these students among the teachers in a new table, which is the way I think it will work better (tb_final).
- I basically need each student to have a randomly chosen teacher so that the distribution is numerically even among the teachers.
In this example, I have 7 teachers and 44 students. Using SELECT query I did the operations to find out how many students would be for each teacher (add/division/mod), but how to make this draw to play in this new table I have no idea where to start.
...ANSWER
Answered 2021-Jun-14 at 14:50You can solve this by next (a bit a complicate) query using window functions:
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