veza | TCP Networking Utility to connect several processes | TCP library
kandi X-RAY | veza Summary
kandi X-RAY | veza Summary
Veza is a protocol that operates over either IPC or TCP with the only difference of one line of code to switch between the two. Inspired on node-ipc, it seeks to use modern, fast, and intuitive APIs, as well as exposing all the underlying back-ends for much higher customizability and extensibility, as well as a HTTP-like protocol where you can send a message and optionally receive a response for it.
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QUESTION
I have problem with ids when adding new object to sql table.
My super class has name and id + 2 constructors:
...ANSWER
Answered 2021-Apr-26 at 23:09Don't expect Primary Key IDs to be sequential.
It's a common misconception that primary keys should be sequential. The one and only requirement is that the PK should have unique values, so it can act as a row identifier.
If the values grow one by one, or if there are gaps, or if the numbers are random, it doesn't really matter. As long as they are unique your application will work well.
It's typical that database engines will buffer segments of numbers for different threads, so different users won't step on each other toes when adding new rows. The side effect is that you'll see gaps of unused values in the table. Again, this is very unimportant.
Also typical is that numbers in the sequence are not recycled. You may later delete rows, but the identifier numbers of those rows will not be assigned again to new rows. Again, this means gaps may appear in your table’s row numbers, and this is very unimportant.
QUESTION
my problem here is that if i try to leave blank spaces in my app, this code inserts an empty string into database on lines txtIme.getText() and txtPrezime.getText() and for that reason my if statement doesn't recognize .executeUpdate() as 0 and therefore doesn't print that nothing has been changed. Can I somehow change it so the app can reach my if statement if blank spaces are left in JTextField? Thank you.
...ANSWER
Answered 2018-Jul-27 at 13:39In case you dont want to use any lib
QUESTION
Set-up
I have the next-page button element from this page,
...ANSWER
Answered 2018-Nov-16 at 12:43The data-href attribute is most likely being calculated by some JavaScript code running in your browser. If you look at the raw source code of this page ("view source code" option in your browser), you won't find that attribute there.
The output you see on developer tools is the DOM rendered by your browser, so you can expect differences between your browser view and what Scrapy actually fetches (which is the raw HTML source). Keep in mind that Scrapy doesn't execute any JavaScript code.
Anyway, a way to solve this would be building the pagination URL based on the data-page attribute:
QUESTION
I am learning JSON with PHP and I run into an problem
I am trying to insert my sizes merged string to database products table under sizes column expected result
This Is what I tried:
I have a function that is called saveChangesSizes where I have tried used JSON.stringify() to convert a JavaScript object into a string
...ANSWER
Answered 2018-Apr-11 at 11:56Updated
QUESTION
I am trying to use PDO to transcribe my code from mysqli.
I am making a simple low to high and vice-versa price filter
Inside preview.php I have a form with radio check buttons that are send to by POST method into search.php file
What I tried in search.php where Validating occurs:
...ANSWER
Answered 2018-Apr-07 at 23:08string is a primitive type in PHP and doesn't expose any methods at all, so calling execute() on a string confuses PHP since you're trying to use it like a class instance.
It also seems like you're trying to execute an SQL query, which means you need to take the SQL query you just built in $sql and execute it with your database driver.
In case of PDO that could look like this:
QUESTION
I am trying to get more than 1 item in my shopping cart array but I run into an issue
This is my database after inserting 1 item with post method
Items is defined in db as text
After trying to insert second product the items result gets overwritten.
My developers tools output after clicking add to cart
ADD
I am using add to cart button from my modal >https://pastebin.com/HKSRTG4L that is submitting via ajax and parsed to add-cart.php
Where I have add to cart function : https://pastebin.com/guv0rB6x
This is my code from cart.php :
...ANSWER
Answered 2018-Apr-02 at 14:25In add_cart.php:
QUESTION
I am trying to insert into my database values from quantity and Size but I am getting Error:
Call to undefined function
lastInsertId()when using add to cart button that is submitting via ajax and parsed to add-cart.php
I am following an mysqli tutorial but I am using PDO and I can't find the solution for this.
I am adding my cart inside the database here:
...ANSWER
Answered 2018-Apr-01 at 03:05lastInsertId doesn't belong to the PDOStatement class, but to the PDO instance.
QUESTION
ANSWER
Answered 2018-Apr-01 at 01:51That warning message means that there was an attempt to access keys in an array that do not exist.
To see the content of the $_POST array, try to do:
QUESTION
I have a code that should work, but it doesn't and I can't find the solution. Inside my database I have column deleted If a product is deleted it is 1
[]
If the product is deleted it goes into Archives location from where it should be successfully restored when clicked on button to become 0 inside the database
This is what I tried with PHP :
...ANSWER
Answered 2018-Mar-28 at 06:45The restore link points to the wrong php file.
Replace:
QUESTION
I am trying to convert mysqli code to PDO way but I run into an issue.
It should behave: If deleted main parent delete his sub categories also, so that there are no "orphans" left in database.
The main parents are parent 0 in database, while sub categories are linked with parents ID. This is working mysqli example :
...ANSWER
Answered 2018-Mar-20 at 19:36Try google prepared statement.
You have boolean in the $result
Usage:
$prep = $conn->prepare("SELECT * FROM table WHERE id=?");
The ? is not replaced!
Then use: $prep->bind_params('i', $id); $prep->execute()
And the result: $result = $prep->get_result();
Check if it is not false.
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