Figuring out how to negate a condition often requires hours of trial and error to avoid breaking anything. Is there any method for negating conditions other than relying on intuition? For instance:
//x and y are whole numbers
!((x<9) && (y<=(8-x)))
((x>8) || (y>(8-x)))
To simplify the problem, one approach is to ignore questions about specific value domains and focus on the logical aspects instead. This can be broken down into different cases such as:
!(A || B) ~= !A && !B
!(A && B) ~= !A || !B
!(!A) ~= A
!(x > y) ~= x <= y
!(x >= y) ~= x < y
The above principles can be extended further for multiple variables like so:
!(A || B || C || D || ...) ~= !A && !B && !C && !D && ...
!(A && B && C && D && ...) ~= !A || !B || !C || !D || ...
Applying these concepts to a specific example, we get:
!((x < 9) && (y <= (8 - x)))
!(x < 9) || !(y <= (8 - x))
(x >= 9) || (y > (8 - x))
Considering additional information that "x and y are whole numbers," a more generalized solution could be expressed as:
(x > 8) || (y > (8 - x))
It's important to assess whether incorporating such details is necessary in each case. While it may lead to a streamlined codebase, it could also result in a less direct relationship with the original wording.
I am using a json file to store data for generating a diagram, and I want to change the color of the diagram conditionally based on an attribute in the json. If the attribute is false, the color should be red, and if true, it should be green. Here is a sni ...
As a newcomer to AngularJS, I am currently navigating a complex form and it seems like incorporating the ngModelOptions { allowInvalid: true } option could prove beneficial. I can only assume that AngularJS's default behavior of discarding the model ...
As I delve into the world of web development, I encountered a simple issue that has been causing me frustration for the past hour. It involves code to display the border color of a div element using an alert. The code works perfectly fine when the style is ...
I've developed a dynamic form that includes an "add more" button to generate an XML file for data import purposes. Users can fill out the form and add as many entries as needed by clicking on the "add more" button. The inputted data is then processed ...
I am currently working on a function that requires an attribute to respond before proceeding with its process. The function call is structured like this : processResult(getResult()); The issue lies in the fact that the getResult function takes some time ...
Just starting out with JS and jquery, I quickly put together a stopwatch code in JS that seems to work accurately up to 10 minutes. The issue arises after the 10-minute mark where it starts falling a few seconds behind (I compared it to a digital stopwatc ...
I am currently displaying FreeEvents using a checkbox and passing the value to the filter as filter:filterFreeEvent, which is working perfectly fine. However, I would like to avoid passing the value in the filter and instead use a change event of a checkb ...
Once a user logs in with their username and password, they receive an access_token containing the payload that includes their uniqueTokenIdentifier. This unique identifier is stored for each user in the database. If a user changes their password due to ac ...
I am looking to disable the onclick event after a successful ajax request. <div class="report_button" id="report_button" title="Reportthis" style="width:65px;height:15px;" onclick="reported_text(user_id,lead_id);">Report</div> This is the div ...
I am facing a challenge with my reactive form where I need to round certain values when the form is submitted, without altering their appearance on the page. To achieve this, I devised a method that generates a new form, rounds the specified values, and t ...
After pondering over this issue for several days, I am still unable to pinpoint what I am doing wrong. Any suggestions or insights would be greatly appreciated. My challenge lies in trying to showcase the response from a rest service to the user by utilizi ...
I'm encountering an issue while starting my angular js application. On a html page, I have divs with icons and I want the background color to change on mouse over. This is working using jquery's $(document).ready(function(){ approach. The conten ...
I am currently delving into the world of node.js and express. In my node.js application, I am utilizing express along with express-handlebars as the templating framework. My goal is to incorporate a dependent picklist that dynamically renders based on the ...
On a webpage, I have third-party ad content that is generated by an external script. This content has a delay in loading. My goal is to eliminate a line break from the ad content, but this can only be done once the external script finishes loading and all ...
I am looking for a way to automatically compile my TypeScript code into JavaScript when another project requires it. For example, when a project runs npm install or updates with my project as a dependency, I want a specific command to be executed after all ...
As a newcomer to VUE, I am attempting to dynamically modify the disabled value based on the userAgent in order to display or hide the paymentMethod: data() { return { paymentMothods: [ { name: 'Visa che ...
I am currently in the process of developing a carousel slider that resembles what we see on Android devices. The main challenge I am facing at this early stage is applying the CSS property position: fixed; only horizontally, as vertical scrolling will be n ...
Within an array of objects, some keys have a value of "null" as a string that I want to convert to null. Here is the code I tried: let obj = [{ "fundcode": "DE", "fundname": "Defens", ...
While following g00glen00b's tutorial on meteor/twitter integration (), I encountered a persistent error. Any assistance or clues would be greatly appreciated. Steps I've Taken Uninstall/reinstall npm Uninstall/reinstall twitter package Uninst ...
My goal is to implement a method to visually filter table rows generated by the foreach binding. I want the filtered out rows to be hidden instead of removed from the DOM, as this can greatly improve rendering performance when filter conditions are changed ...