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QUESTION
Currently I'm working on a Demo program to better understand working with FreeRTOS. Therefore I would like to try to initialize a Queue on my second core(core1). After initializing i would like to add something to it in a 1 second interval and whenever nothing happens I would like to check my queue and work its content off. Everything related to that queue should work on the second core. The reason being that I previously worked on a Webserver which operates on the main core. My future Queue is supposed to work in parallel on the second core.
This is my current demoprogram:
...ANSWER
Answered 2022-Jan-14 at 16:52You don't need to assume where the problem is; the answer is in the backtrace that you posted. The exception happened during a particular function call in your code:
QUESTION
Configuration Details
- Spring: 2.6
- IDE: Intellij
- Java 11
I have created a spring boot application with plugins as
- Spring Web
- H2 Database
pom.xml
...ANSWER
Answered 2022-Mar-27 at 05:08As mentioned by user g00glen00b in comments, one has to explicitly enter the URL in the H2 console.
QUESTION
I have this SVG located under nav and similar one on bottom of the view in different color. I have the top one fixed so when I scroll the bottom one goes on top of the top one. That I get to work but for some reason my next section doesn't want to go over the svg. I hope some CSS guru can help me out with this. Basically I want to hide the top svg under the section-2.
...ANSWER
Answered 2022-Mar-21 at 17:51The second section needed to be position absolute to go on top of the fixed svg.
QUESTION
This is how my data looks like:
Item Year Price Hat 2020 15 Hat 2021 17 Hat 2022 19 Pen 2020 3 Pen 2021 2 Pen 2022 3.3I want to use PostgreSQL to achieve a simple data analysis task that will provide the result below:
Item Year Price Previous Year Previous price higher_than_previous_year Hat 2020 15 Hat 2021 17 2020 15 yes Hat 2022 19 2021 17 yes Pen 2020 3 Pen 2021 2 2020 3 no Pen 2022 3.3 2021 2 yesPrevious Year: Fetches the closest year that is lesser than the current year specified in the year column. Previous Price: Fetches the price for the item that corresponds with the previous year. higher_than_previous_year: compares the price column with the previous price column and computes yes when the price is higher than the previous price and no when the previous price is higher than the year price.
I will appreciate it if any PostgreSQL guru can take a crack at this. Thanks!
...ANSWER
Answered 2022-Mar-11 at 14:45You could use simple JOINS and UNION to achieve this (one of the many ways):
Query:
QUESTION
This is a tale of optional owned entities and foreign keys.
I'm working with EF 5 (code first) and I do this :
...ANSWER
Answered 2022-Feb-09 at 08:47It was a configuration issue that had nothing to do with Owned entities. Another case of "EF error message is obscure but issue is somewhere there in plain sight".
Unfortunately I don't remember how I fixed it. But it was along the lines of "Need an extra constructor with all the paramaters" or "one of the fields had a different name in the constructor parameters" or one of those classic EF mishaps.
QUESTION
I am trying to create a Workflow object using AWS CloudFormation. This workflow will be used with AWS File Transfer Family so that files get copied to S3 upon uploading.
...ANSWER
Answered 2022-Feb-08 at 07:30The Description can only be
QUESTION
I was learning about the Bridge Design pattern. To quote:
The Bridge pattern attempts to solve this problem by switching from inheritance to the object
composition. …
And then, the following image is shown:
When people are talking about composition as an alternative for inheritance, do they refer to both aggregation and composition relationships? If not, what do they mean exactly?
I wonder this because the picture has an aggregation relationship between Color and Shape, not a composition one.
ANSWER
Answered 2022-Feb-03 at 13:37Normally, when people talk about using composition vs. inheritance, they are talking about alternative ways of solving the same problem. In both cases, a "base class" provides an implementation of an interface that you want to reuse in your "derived class"
When you implement this with inheritance, there is an undesirable is-a relationship between the derived class and the base class, with the effect that implementation details of the base class, which should be hidden, can become changes in the derived class class.
When you implement this with composition -- a real composition relationship -- the "derived" only has an is-a relationship with the interface that it wants to implement, and the cost of this is that it must delegate calls to the "base" class.
In the Bridge pattern, which you reference, the goal is a little different. You do want to isolate the containing class from change to the connected implementation, but there is no is-a relationship between the containing class and an interface of the contained class.
The relationship between them may be one of composition, or may be simple aggregation -- that is an implementation detail. Often, the concrete implementation of the contained class will be injected as an interface into the containing class constructor, and in that case the relationship is just aggregation.
QUESTION
I'm trying to scrape a website for images via selenium python. I have been having issues in locating the image.
Code:
...ANSWER
Answered 2022-Jan-30 at 12:02Your code is missing a wait. You are trying to get all the img elements before page completely loaded.
The best approach to wait for elements to be completely loaded is to use Expected Conditions explicit waits.
This should work better:
QUESTION
I had this code snippet working for a long time and am getting 'TypeError: Cannot read properties of undefined (reading 'match') since upgrading to v17 of node.
...ANSWER
Answered 2022-Jan-27 at 10:12The version 17 is not yet stable. You shouldn't be using it, unless you really know what you are doing. You will ran into many problems when for example using third party packages and so on. The latest stable version is 16.13.2 as it is mentioned on the official nodejs website here.
QUESTION
This plugin for shopify: https://apps.shopify.com/custom-js
It used to allow you to add a full script tag to the html.
But today a client was complaining saying it did not work for them, when i dug into the issue the plugin appears to have stopped doing that and only allow you to add actual javascript code.
They don't want to use google tag manager, but we need a simple way (that they can understand in the future when i am not there) to be able to inject custom script tags.
EG:
...ANSWER
Answered 2022-Jan-13 at 11:46Use this code in theme.liquid if you are using third party js file:
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