Questions tagged [for-loop]

A for loop serves as a control mechanism employed in numerous programming languages to traverse through a specified range. It embodies the method of executing statements repeatedly until the loop reaches its end. The range can vary based on the programming language, encompassing integers, iterators, and so forth.

The array element is not being shown in the id "main" when using a for loop with the onchange function

I've been using document.write to display specific content, but it seems to be removing other elements from the page. Is there a way for me to display this loop inside the element with id="main" without losing any content? When I attempt to use document. ...

do not continue loop if promise is rejected in AngularJS

I've attempted multiple methods, but still haven't found a solution to this issue. Within my code, there is a method called iterator that returns a promise; this method runs in a loop x number of times. If the iterator function returns a rejecte ...

Is there a way to stop a for-in loop within a nested forEach function in JavaScript?

I am facing a situation with nested loops for (var key in params) { if (Array.isArray(params[key])) { params[key].every(function(item) { let value = something(item.start, item.end); if (value === item.start || value == item.end) { ...

Employing the forEach method on an array to search for a specific string and subsequently retrieve a function

I'm currently working on implementing a discount code system using AngularJS. I've defined a function called $scope.pricetotal that represents a specific value, an input field to capture a string, and an array. Here's the main objective: I want to compare ...

In PHP, what types of conditions are permissible to use within a for loop?

As a newcomer to PHP, I have some understanding of how for loops operate. I am a bit confused about why the loop in the following code snippet does not function properly. Can you please explain what kind of conditions are acceptable within a for loop? Her ...

What is the best way to generate multiple progress bars by leveraging a for loop?

Exploring the code snippet below, I've been creating a progress bar that reacts to specific data input in array form. However, the issue I've encountered is that the code only generates a single progress bar. How can I incorporate this into my f ...

What are some strategies to boost the efficiency of a sluggish for loop in Python when using pandas?

As I work on optimizing my code for better performance, I have encountered a bottleneck in the data preparation phase. The structure of my data is quite specific, leading me to iterate through two for loops to process it. Initially, this method worked well ...

What is the best way to iterate through a series of dataframes and perform operations using a for loop?

I've encountered a common issue and I'll use the Titanic dataset to illustrate. In order to perform operations on both the train and test sets simultaneously, I merged them together: combined = [train_df, test_df] In addition, I streamlined the titles fo ...

AngularJS: Troubleshooting a Service Function with a Dysfunctional For/In

I am facing an issue with a for/in loop within a function that is not functioning properly. $scope.items = []; jobslisting.getJobs(function(data){ for(var i = 0; i < data.length; i++){ $scope.items.push({name:data[i]}); } con ...

JavaScript: Populating an Array with Image URLs Using a Loop

My image gallery project has hit a roadblock and my JavaScript skills are not up to par. Maybe it's time to brush up on the basics with a good book from the library. Here's what I want to achieve: 1. Create an array of URL's for each image file 2. Use ...

The process of "encrypting" a message using a specific set of guidelines often yields an unfinished outcome

I need to develop a function that encrypts a user's message and returns the encrypted string based on specific rules: Alphabetic Uppercase Character [A-Z]: Convert to lowercase and add a ^ character at the end Alphabetic Lowercase Character [a-z]: R ...

Using a for-each loop to wait for the completion of an Ajax process

for (var i = 0; i < theTagNames.length; i++) { var url = baseURL + "?" + "jsoncallback=?" + "&method=flickr.photosets.getPhotos" + "&format=json" + "&api_key=" + api + "&photoset_id=" + theTagN ...

Stopping a nested loop in Python after a condition is satisfied

After working on a piece of code for a while, I encountered a problem with stopping a for loop after a certain condition is met. Here's the snippet: DATA_t = pd.read_excel('C:/Users/yo4226ka/Work Folders/Desktop/Teaching/IKER STUFF/iker1.xlsx',index_col=0, ...

Newbie in JavaScript seeking help with JSON indexing: What could be causing my script using (for ... in) to fail?

Not being a seasoned Javascript coder or very familiar with JSON, my approach may seem naive. Any recommendations for better solutions are appreciated. Below is the code I've written: <!DOCTYPE html> <html> <head> <script> ...

I am looking to create a for loop that will automate the process of clicking on multiple links and navigating back to the previous page

Below is the code I have written to achieve a specific task: my_list = WebDriverWait(driver, 20).until(EC.visibility_of_all_elements_located((By.XPATH, "//table[@border='1']//a"))) for option in my_list: option.click() WebDriverWait(drive ...

Monitor the user's attendance by utilizing two separate for loops

I'm currently developing an angularjs attendance tracking system and I'm facing challenges when it comes to accurately counting the number of days an employee is absent. Despite attempting to solve this issue with two nested for loops, I am still ...

Exploring the PHP array slice feature

Hey there, I'm currently facing a challenge with iterating through my array chunks. I am working on creating an image gallery where groups of three images follow a specific pattern and then the next set of three follows the opposite pattern. I believe I a ...

Ways to apply a personalized Python function to a collection of dataframes stored in a dictionary

I have a collection of 3 dataframes stored in a dictionary. How can I create a custom function to apply to each dataframe within the dictionary? In simpler terms, I would like to use the function find_outliers as shown below # Custom function: find_outli ...

Python code for arranging the output in numerical sequence

My program reads the last line of multiple files simultaneously and displays the output as a list of tuples. from os import listdir from os.path import isfile, join import subprocess path = "/home/abc/xyz/200/coord_b/" filename_last_l ...

Problem encountered when attempting to add elements to an array within a nested

When running this code, everything works correctly except for the array pushing. After checking the console.log(notificationdata), I noticed that notification data gets its values updated correctly. However, when I check console.log(notifications), I see ...

Tips for adding elements to an angular $scope.array?

Currently, I am facing an issue that I cannot seem to pinpoint (most likely due to my limited expertise in AngularJS). In my HTML file, I have a basic ng-repeat set up like this: <ul> <li ng-repeat="fot in fotografia"><img src="{{fot.path ...

Using triple nested for loops in Python to iterate through a JSON object

I am trying to extract the latitude and longitude data from a Python object. Here is a snippet of the object: { "Siri": { "ServiceDelivery": { "ResponseTimestamp": "2014-08-09T15:32:13.078-04:00", "VehicleMonitoringDelivery": [ { "VehicleAct ...

Using Typescript for-loop to extract information from a JSON array

I'm currently developing a project in Angular 8 that involves utilizing an API with a JSON Array. Here is a snippet of the data: "success":true, "data":{ "summary":{ "total":606, "confirmedCasesIndian":563, "con ...

Tips for making a Python list without utilizing the range function in For Loops

If we take the string myString = "ORANGE" How can we implement a loop that displays each character with its position as shown below? 1O 2R 3A 4N 5G 6E I'm facing some confusion on how to achieve this without utilizing range. ...

What is the best way to generate a list using user input in Python?

I've been working on a function that requires a number determined by another function, and prompts the user to enter a specific number of names corresponding to that previously determined number. Here's the code snippet: def getNames(myNumOfTypes): pr ...

Streamlining programming by utilizing localStorage

Is there a more efficient way to streamline this process without hard-coding the entire structure? While attempting to store user inputs into localStorage with a for loop in my JavaScript, I encountered an error message: CreateEvent.js:72 Uncaught TypeErr ...

Tips for showcasing information beneath a title on a webpage in Yii2 without duplicating the header

Looking to pass an array to my view that includes headings and corresponding content lists. The structure of my array is as follows: Array ( [0] => Array ( [trimester] => Trimester1 [subject] => ABC ) ...

Utilizing conditional statements to count within a loop

Currently, I'm working with the data repository found at: https://github.com/fivethirtyeight/data/blob/master/avengers/avengers.csv As part of an exercise from DataQuest, my task involves calculating the accuracy of the 'Years since joining' column by su ...

Assessing the validity of a boolean condition as either true or false while iterating through a for loop

I am facing an issue that involves converting a boolean value to true or false if a string contains the word "unlimited". Additionally, I am adding a subscription to a set of values and need to use *NgIf to control page rendering based on this boolean. &l ...

I am currently working with a for loop within an object in JavaScript, but there seems to be a problem with one

Here is a function called validator: import validator from "validator"; import isEmpty from "is-empty"; export default function validate(data) { const errors = {}; for (const property in data) { console.log(property); //< ...

Python function for tracking iterations within a list

I have a puzzling query that may very well warrant the response "Try another approach." In my code, I have a function that uses recursion to iterate through a list using a for loop. At certain points, the function calls itself with specific parameters and ...

How a JavaScript function handles the scope of a for loop index

Here's some Javascript code I'm working with: func1() { for(i = 2; i < 5; i ++) { console.log(i); func2(i); } } func2(x) { for(i = 100; i < 200; i ++) { do something } } I've noticed that when runni ...

populating a multi-dimensional array using a "for" loop in Javascript

It appears that JavaScript is attempting to optimize code, causing unexpected behavior when filling a multidimensional array (largeArr) with changing values from a one-dimensional array (smallArr) within a loop. Take the following code for example: largeA ...

What is the best way to iterate a loop in PHP from a specified start date to an end date, progressing at three-month intervals

Today, I have a question regarding PHP date manipulation. Code $calcdateloops = date("Y-m-01", strtotime(date('Y-m-d')." -1 year -6 Month")); //2015-01-01 $enddate = date('Y-m-d'); Now, my goal is to divide the dates into quarters, meaning every 3 mon ...

PHP's for loop may not iterate through the entire array

I am currently using PHP/7.2.0beta3 and I have a requirement to develop a custom function in PHP that can reverse an array. For example, if the array is (1,2,3), the desired outcome should be (3,2,1). My initial approach was to utilize the array_pop funct ...

Creating a user-defined function that returns an empty dataframe prior to executing a for loop

Although I have come across similar questions to mine multiple times, I have thoroughly reviewed them and still cannot solve my own code. Therefore, I am hoping someone might have the answer. The issue lies in a for loop inside a user-defined function tha ...

How to efficiently write to a CSV file and add to a list at the same time using Python

Scenario: The code snippet below utilizes Selenium to locate a series of links from the Simply Recipe Index URL, then saves them in a list named linklist. The script proceeds to loop through each link in the linklist, fetching recipe text and storing it i ...

Using PHP to create a loop that generates a multi-radio form: a step-by-step guide

Despite coding it this way, the multiple radio form is still not functioning as intended. I attempted to utilize fieldset, but to no avail. How can I rectify this issue? Could using various ID's for fieldset assist in creating multiple forms correctly ...

Implementing a loop in jQuery is not functioning as expected

Can someone help me figure out how to use a for loop to create a jQuery function? I'm having trouble when adding the array parameter in the string, it just doesn't seem to work correctly. Any suggestions? var ids=["width_uncheck","thickness_uncheck"]; v ...

I am eager to investigate why this method suddenly stops looping after processing the second record

I need to create a button that loops through all records and performs a method that generates a list of ranges between two fields. Then, it should remove another record from the list and place the value in the result field. I have implemented the code bel ...

Generate a dataframe by combining several arrays through an iterative process using either a for loop or a nested loop in

I am currently working on a project involving a dataframe where I need to perform certain calculations for each row. The process involves creating lists of 100 numbers in step 1, multiplying these lists together in step 2, and then generating a new datafra ...

Other options instead of employing an iterator for naming variables

I am relatively new to Python, transitioning from a background in Stata, and am encountering some challenges with fundamental Python concepts. Currently, I am developing a small program that utilizes the US Census Bureau API to geocode addresses. My initia ...

What is the best way to generate an array from JSON data while ensuring that the values are not duplicated?

Upon receiving a JSON response from an API, the structure appears as follows: { "status": "success", "response": [ { "id": 1, "name": "SEA BUSES", "image": null }, { "id": 2, ...

Traversing through each element using Array method

I need to create a redux function that will add a specified number n to the fourth element of an array every time a button is clicked. However, if the element is either L or M, I do not want the addition to occur. For example, starting with this initial a ...

Using Sass to Loop through Specific Items

Currently, I am in the process of developing a SASS loop to iterate over a series of images (let's say 50). My goal is to increment the transition delay by 50ms for every nth-of-type image. However, it appears that the current for loop I have implemented i ...

Skipping iterations in Python for loopsIs it possible that a

After creating a selenium bot that navigates through a list of territorial codes and sends them to a search box on a website which then converts the code into the city name, I encountered an issue. Sometimes, during the iteration process in my for loop, it ...

BeautifulSoup Pagination in Python: A Complete Guide

I am currently working on a web scraping project for the following website: I have successfully scraped the data, but I am facing challenges with pagination. My goal is to create a loop that scrapes the next page button and uses the URL from that button t ...

Accelerate the process of converting numerous JSON files into a Pandas dataframe within a for-loop

Here is a function I've created: def json_to_pickle(json_path=REVIEWS_JSON_DIR, pickle_path=REVIEWS_PICKLE_DIR, force_update=False): '''Generate a pickled dataframe from specified JSON files.''' current_date = ...

Is there a way to reverse a string in Javascript without using any built-in functions?

I am looking for a way to reverse a string without using built-in functions like split, reverse, and join. I came across this code snippet on Stack Overflow (), but I'm having trouble understanding what the code does on the fourth line. I need more cl ...

Using a for loop, how can the property value be set in another object?

One challenge that I am facing is setting object property values. The object in question looks like this: const newPlan = { name: '', description: '', number: '', monday: { breakfast: '', ...

Having difficulty accessing a JSON imported object beyond the FOR loop

I am facing an issue when trying to reference my imported JSON data. The problem arises when I attempt to access the data outside of a FOR loop, resulting in the error message "Uncaught TypeError: Cannot read property 'Tname' of undefined" The f ...

Restricting the execution of a for loop

Currently, I am facing an issue with a portion of my code. I have a system in place that adds checkpoints to a program every 14 minutes. However, I want to set a limit on the number of checkpoints based on the duration of the course in hours. For example, ...

Looping endlessly, causing the page to freeze and preventing it from loading. Time to take

I am in the process of setting up a Bitcoin payment gateway for transactions worth 0.25 BTC with just 1 confirmation required. I have designed a form (form.html) that generates a unique random address ($_POST['address']). Upon submission, I want ...

Looping through multiple AJAX calls

I have come across numerous questions on this topic, but I am still struggling to find a solution that will make my code function correctly. There is a specific function for calling AJAX that I am unable to modify due to security restrictions. Here is how ...

The For loop with varying lengths that exclusively produces small numbers

I'm currently using a for loop that iterates a random number of times: for(var i = 0; i<Math.floor(Math.random()*100); i++){ var num = i } This method seems to be skewed towards producing lower numbers. After running it multiple times, the &apo ...

How can I ensure that I am only retrieving the first object within a "for loop" in vuejs and returning its value without getting the rest?

Why am I only able to retrieve the value of the first object in my "for loop" and not all three values as intended? var app = new Vue({ el: '#app', data: { myObj: [ {name: 'Hello', age: 10}, {name: 'World', age: 20}, ...

How to transfer a variable from an inner loop to an outer loop in Python using pandas?

Having trouble passing the variable of the inner loop to the outer loop in my Python code. Each time the inner loop breaks, the value of variable "x" resets to the initial value. import pandas as pd import csv user_list = pd.read_csv(r'C:\Users& ...

Using Python's for loop to iterate through a two-dimensional index

I'm facing a challenge that seems simple, but I'm struggling to figure out how to tackle it using Python. Within my Python for loop, I have a unique value defined during each iteration. Now, I want to access the value of the NEXT or PREVIOUS unique value ...

Generating a three-level unordered list using arrays and for-loops in JavaScript/JSON

Are there more efficient ways to achieve the desired results from this JSON data? Can someone assist me in understanding why it is working and if it can be optimized for cleanliness? <div id="accordion" class="display-data"> ...

Problem: Challenge in Iterating and Assigning Variables to HTML Table Elements

I am currently working on a project that involves tracking the order statuses of individual shipments from a list of URLs stored in an Excel sheet. The code I have written is capable of looping through the URLs and extracting information from them successf ...

Tips for optimizing session.add with various relationships to improve performance

Below is the model structure of my source code, represented as an array in a dictionary format. # data structure user_list = [{user_name: 'A', email: '<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="8feeeeeecfe ...

The Python script concludes in the space between two for loops

Recently diving into Python, I'm exploring the process of copying files from one location to another and storing some information within them in a MySQL database. Interestingly, I've noticed that when running my script, it only works after being ...

Combining dynamic classes within a v-for loop

Here's my custom for loop: <div v-for="document in documents"> <span></span> <span><a href="javascript:void(0)" @click="displayChildDocs(document.id)" :title="document.type"><i class="fas fa-{{ docume ...

Preventing Duplicate Random Numbers in Vue 3 and JavaScript: A Guide

I've been working on creating a function that can iterate through an array of objects with names and IDs, randomize the array, and then return one filtered item to slots.value. The current spin function successfully loops through the randomized objects. ...

Utilizing JavaScript For Loops for Code Repetition

Apologies for the ambiguous question title - struggling to articulate this properly. Essentially, I have some JavaScript code that I am looking to streamline by using a for loop. $('.q1').keyup(function () { if ($.inArray($(this).val().toLowerCase(), ...

HTML double for-loop

While working on my website's HTML file, I encountered a challenge with nested for-loops. The first loop successfully checks the user's account and displays the corresponding data, and the second loop filters data starting with "Title:" and displ ...

Drop items next to the specified keys. Vanilla JavaScript

I am trying to create a new array of objects without the gender field. Can you identify any mistakes in my code? let dataSets = [ { name: "Tim", gender: "male", age: 20 }, { name: "Sue", gender: "female", age: 25 }, { name: "Sam", gender: "m ...

The counterpart to Ruby's `.select{ |x| condition }` in Javascript/ React.js would be to

This javascript function in React.js utilizes a for loop to determine the opponent team: getOpponentTeam: function(playerTeamId){ var matches = this.state.matches; var player_team = this.state.player.team.name for (i in matches){ if (matches[i]. ...

PHP Adding Values to a Nested Array

I am encountering some difficulties with retrieving the output from an array. Despite my efforts, I have not been able to determine why each portion of the array is not being assigned a proper index. I even attempted to introduce a counter variable in hope ...

The table is unable to properly display the array data

My code includes an AJAX function that sends a GET request to an API and receives data in the format shown below: { "firstname": "John", "lastname": "Doe", "email": "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="6 ...

Traverse the JSON object to extract the value associated with a specific property name

I have a collection of JSON objects and I am trying to retrieve specific property values from them. My scenario is related to the following query: DO $$ DECLARE v_whatever character varying := 'a'; v_res character varying; BEGIN SELECT params->>v ...

Tips for implementing an IF statement within a FOR loop to iterate through a DataFrame efficiently in Python

I am currently working on a task that involves selecting segments or clauses of sentences based on specific word pairs that these segments should start with. For instance, I'm only interested in sentence segments that begin with phrases like "what does" or ...

Exploring sequences using a recursively defined for loop

I am having trouble writing a for loop to eliminate number sequences in combinations from a tuple. The loop seems to only check the first value before moving on to the next, and I can't figure out where to define the last value properly. It keeps comp ...

Can you demonstrate how to incorporate a new line within a for loop?

I have an array of letters and I need to display them on the screen using a for loop. My goal is to make every sixth letter appear on a new line. Here is the code snippet: https://i.stack.imgur.com/lHFqq.jpg <script> export default { data() { ...

How to add multiple entries using Node.js and Tedious

I am currently working with an array of customer objects that I need to insert into a SQL database. These customer objects are retrieved from the request data. For this task, I am utilizing Tedious for handling the request and Tedious Connectionpool to ma ...