carrot | A simple implementation of relational database | Database library

by fukien C++ Version: Current License: No License

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kandi X-RAY | carrot Summary

carrot is a C++ library typically used in Database, Oracle applications. carrot has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

A simple implementation of database system. Recommended code debugging on Linux and Code::Blocks-16.01.

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carrot has a low active ecosystem.

It has 12 star(s) with 4 fork(s). There are 1 watchers for this library.

It had no major release in the last 6 months.

carrot has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of carrot is current.

Quality

carrot has no bugs reported.

Security

carrot has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

carrot does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

carrot releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

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carrot Key Features

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carrot Examples and Code Snippets

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Community Discussions

Trending Discussions on carrot

How to update firestore collection based on other docs?

Replace certain words in a 2D array

Aligning text next to an image within a container

SQL for selecting values in a single column by 'AND' condition

WHERE-Clause with CASE-Statment after IN-Clause does not work out

Is it possible to compose two sealed classes?

Disable "Select By Typing" in Material UI Menu Component

Delete button removes all the children , instead of just the one with the key

Read lines with spaces in a txt file

How to loop back to start of question in case of incorrect input in a yes/no game?

QUESTION

How to update firestore collection based on other docs?

Asked 2021-Jun-15 at 03:53

I am building an order form that limits how many items you can order based on the stock of the item. I have a menu collection which has items

...

ANSWER

Answered 2021-Jun-10 at 20:49

You should deffinitely use a cloud function to update the stock. Create a function onCreate and onDelete functions trigger. If users can change data you would also need to onWrite function trigger.

Depending on the amount of data you have you woould need to create a custom queue system to update the stock. Belive me! It took me almost 2 years to figure out to solve this. I have even spoken with the Firebase engeeners at the last Firebase Summit in Madrid.

Usualy you would use a transaction to update the state. I would recommend you to do so if you don't have to much data to store.

In my case the amount of data was so large that those transactions would randomly fail so the stock wasn't correct at all. You can see my StackOverflow answer here. The first time I tought I had an answer. You know it took me years to solve this because I asked the same question on a Firebase Summit in Amsterdam. I asked one of the Engeeners who worked on the Realtime Database before they went to Google.

There is a solution to store the stock in chunks but even that would cause random errors with our data. Each time we improved our solution the random errors reduced but still remained.

The solution we are still using is to have a custom queue and work each change one by one. The downside of this is that it takes some time to calculate a lot of data changes but it is 100% acurate.

Just in case we still have a "recalculator" who recalculates one day again and checks if everything worked as it should.

Sorry for the long aswer. For me it looks like you are building a similar system like we have. If you plan to create a warehouse management system like we did I would rather point you to the right direction.

In the end it depends on the amount of data you have and how often or fast you change it.

Source https://stackoverflow.com/questions/67926326

QUESTION

Replace certain words in a 2D array

Asked 2021-Jun-12 at 18:44

The method plant() takes a String and a 2D array of String[][] as its inputs. The strings within the array should not be replaced by the inputted word.

...

ANSWER

Answered 2021-Jun-03 at 10:30

This should help you:

Source https://stackoverflow.com/questions/67795059

QUESTION

Aligning text next to an image within a container

Asked 2021-Jun-12 at 02:43

What I'm trying to recreate

New to CSS+HTML and trying to practice my 'skills' which I have developed so far.

I've spent so many hours trying to get the text to align but it just will not.

Here's what i've had achieved so far

That in itself took ages just to figure out how to align the four cards like that. I still cannot figure out how to align this text though.

Here is my HTML:

...

ANSWER

Answered 2021-Jun-12 at 01:56

You need to wrap all your content except img in separate div and you need to add flex to your ".burger-item " , and you need to change some styles for your ".burgerimg "

But i suggest you change something , and experiment on your own

Working code :

Source https://stackoverflow.com/questions/67944876

QUESTION

SQL for selecting values in a single column by 'AND' condition

Asked 2021-Jun-11 at 19:26

I have a table data like bellow

PersonId Eat 111 Carrot 111 Apple 111 Orange 222 Carrot 222 Apple 333 Carrot 444 Orange 555 Apple

I need an sql query which return the total number of PersonId's who eat both Carrot and Apple. In the above example the result is, Result : 2. (PersonId's 111 and 222)

An ms-sql query like 'select count(distinct PersonId) from Person where Eat = 'Carrot' and Eat = 'Apple''

...

ANSWER

Answered 2021-Jun-11 at 18:38

SELECT PersonID FROM Person WHERE Eat = 'Carrot'
INTERSECT
SELECT PersonID FROM Person WHERE Eat = 'Apple'

Source https://stackoverflow.com/questions/67941767

QUESTION

WHERE-Clause with CASE-Statment after IN-Clause does not work out

Asked 2021-Jun-11 at 11:26

I´m working on this for a few hours now, but I can' figure out, how to solve the problem.

This is the critical WHERE-Clause:

...

ANSWER

Answered 2021-Jun-11 at 11:26

This is exactly the problem, as you mentioned yourself:

the ELSE-Block separately it return multiple valid values

The CASE cannot return more than one value, in your case it can return either '14165' or single value from a sub-query.

Here is an alternative sql to solve your issue:

Source https://stackoverflow.com/questions/67935658

QUESTION

Is it possible to compose two sealed classes?

Asked 2021-Jun-10 at 22:11

Image that I have two distinct Kotlin sealed classes.

...

ANSWER

Answered 2021-Jun-10 at 21:28

Just create a super class:

Source https://stackoverflow.com/questions/67928573

QUESTION

Disable "Select By Typing" in Material UI Menu Component

Asked 2021-Jun-10 at 04:36

I'm trying to make a pop-up menu that has a couple different filters (buttons, selects, and text fields). I'm using the Material UI Menu component, but have run into an issue when trying to use the text fields. Because the Menu component is acting like a , when I type something in the text fields, it tries to select different MenuItems instead of staying focused on the text box.

So using the example found in the sandbox below, users wouldn't be able to type anything in the "search for a different food" textbox if it started with an "A", "B", or "C". If you wanted to type in "apricots", the menu would change focus from the textbox to the "Apples" MenuItem.

I don't see any props for this in the Menu API, so I'm curious to know if there is any work arounds, or even a different component that is more suited for this.

Thanks!

Here's a codesandbox: https://codesandbox.io/s/wizardly-mccarthy-zy2b7

...

ANSWER

Answered 2021-Jun-10 at 04:36

Use e.stopPropagation() in the onKeyDown event for the MenuItem containing the TextField. This will prevent the key down event from propagating to the Menu component.

Source https://stackoverflow.com/questions/67913886

QUESTION

Delete button removes all the children , instead of just the one with the key

Asked 2021-Jun-09 at 11:59

I have researched this topic for quite some time now, yet I still cannot make the 'Remove' button in the child component (ControlledOpenSelect) only remove the item with the key it was passed - by using the callback function.

My ControlledOpenSelect (the child component):

...

ANSWER

Answered 2021-Jun-09 at 11:59

You are not passing the id to the handleRemove method . you need to pass an inline function which passes the item.id as argument

Source https://stackoverflow.com/questions/67903616

QUESTION

Read lines with spaces in a txt file

Asked 2021-Jun-04 at 13:56

typedef struct
{
    char foodCategory[15],foodName1[30],foodName2[30],foodName3[30];
    double foodPrice1,foodPrice2,foodPrice3;
}Food;

void print_food()
{
    Food c[300];
    int lineNumber = 2,index = 1;
  
    FILE *file = fopen("Food.txt","r");

    if (file != NULL)
    {
        char line[300];
        while (fgets(line, sizeof line, file) != NULL)
        {
            if (index == lineNumber)
            {
                sscanf(line,"%14s-%29s %lf %29s %lf %29s %lf",
                       c[lineNumber].foodCategory,
                       c[lineNumber].foodName1,
                       c[lineNumber].foodPrice1,
                       c[lineNumber].foodName2,
                       c[lineNumber].foodPrice2,
                       c[lineNumber].foodName3,
                       c[lineNumber].foodPrice3);
                printf("---%s---\n",c[lineNumber].foodCategory);
                printf("%s\t%lf\n", c[lineNumber].foodName1,c[lineNumber].foodPrice1);
                printf("%s\t%lf\n", c[lineNumber].foodName2,c[lineNumber].foodPrice2);
                printf("%s\t%lf\n", c[lineNumber].foodName3,c[lineNumber].foodPrice3);
            }
            else
            {
                index++;
            }
        }
        fclose(file);
    }
    else
    {
        printf("No file found");
    }
}

...

ANSWER

Answered 2021-Jun-04 at 13:56

Here is my solution. Basically, I replaced sscanf by some string manipulation to parse the lines.

Source https://stackoverflow.com/questions/67837499

QUESTION

How to loop back to start of question in case of incorrect input in a yes/no game?

Asked 2021-Jun-03 at 10:19

I'm trying to create a very simple easy game with multiple rounds and each round has three questions.

If you answer the wrong answer to a question in one round, you have to start the round again from the top. Once you have answered two questions correctly, you have a final question where if you answer this right you add 1 to the answer pot. After this you move on to the next round.

I am trying to figure out how to loop back to the start of the round that you are currently on if you get an answer wrong. At the moment if you get an answer wrong in the first round, you just go straight on into the second round.

Any ideas on how I can integrate a loop into the incorrect answer statements so they start that round again before they are able to move on? Thank you!

...

ANSWER

Answered 2021-Jun-03 at 09:29

A good way to solve this would be error handling - create a custom Exception and throw it whenever a wrong answer is given. Loop until you passed all questions without exception and then break.

I also modified your ask-function , there is no need for recursion in it, simply loop and return when a valid answer is given.

Source https://stackoverflow.com/questions/67818542

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