Questions tagged [validation]
Validation is used to check data to make sure it fits whatever required specifications are set for it.
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Accurate email syntax validation (no seriously)
So a friend happened to show me how odd and specific the general email syntax rules are. For instance, emails can have "comments". Basically you can put characters in parentheses that are just ignored....
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Verifying password strength using JavaScript
I have a function which verifies the "Password" field and suggests the user to enter a strong password. I also have a label named "Password Strength", referring to the strength of a password (very ...
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Ensuring user input is an integer in a range
I have isolated a little bit of code that was causing a small debate between myself and another user. I have taken some of the things that he said and meshed it with the code that was being reviewed ...
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Password validation in Java
I just wrote this password validation code function that checks to see if a password will be accepted in AD or not. I'm not sure this is the best way to do it, but for now it works fine. I would love ...
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A completely repetitive console prompt, a completely repetitive console prompt
So I wrote this for my Mandelbrot Generator, to collect and use input from the user, and I made it dynamic enough to be useful anywhere.
I'm really interested in all critiques of it, as I'm going to ...
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Password checker in Python
Using Python 2.7.12 I wrote a simple little script, psk_validate.py, that prompts the user for a potential password and checks if it has upper and lower-case ...
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Matching a generated string of random letters to an input
I made a program in Python and wanted it to be faster, so I wrote it on C# because it's compiled. To my surprise, the Python program is much faster. I guess there is something wrong with my C# code, ...
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Validating opening and closing bracket pairs
I have refactored one of my old homework assignments (mainly to utilize std::stack and some C++11), and I'm still having trouble making it less repetitive.
It ...
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Verifying a person's age
When coding I noticed I started to get into a habit of not using if-else statements when the else block only has one line of code. For example, if I have code that can be solved like this:
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Validating Yes/No answers in C++
I intend to accept all of the following answers:
y
Y
yes
YES
Yes
plus mixtures, such as yeS, yES, which I didn't intend to accept but it's a consequence of my code
the same applies to No and its ...
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Celsius → Fahrenheit conversion table
It's harder to do than criticize. Here's my attempt to implement a Celsius-to-Fahrenheit conversion table in C++.
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Program to check if a date is valid or not
I am a novice programmer and am currently learning Python programming by myself through a book. I stumbled upon a question in a chapter and it took me 2 days to figure out a solution for it. Although, ...
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Check for balanced parentheses
I was given an assignment to check for balanced parentheses from an arbitrary string where parentheses are defined as (, [ or { and their respective "closing" ...
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Allowing users to input a safe subset of HTML
I am currently working on a project that requires users to input text that may or may not be formatted (if it helps, just think of it as a Stack Exchange clone, even though that's not quite accurate). ...
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Simple object validator
I wrote a simple validation tool that allows me to quickly define validation rules and check my data objects against them. I know there is this another tool called FluentValidation but... I'm not a ...
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Credit card verification: string conversion most optimal?
Below is some code which verifies a credit card number using the checksum as well as check if number of digits are appropriate as well if digits start with right numbers. I am not sure if converting ...
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Email validation using JavaScript
I have a function where I validate emails via a regex. I was wondering if this is the best regex to use or if there's a better way of doing it.
Also is there a ...
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Enforcing string validity with the C# type system
One of my biggest complaints about .NET is that there's no way to guarantee a string match a certain type in the type-system.
Note
This started as more of a proof-of-concept than a real usable system,...
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Checking if each char in a string is a decimal digit
I had to write a program that would verify that a string contains any digits beside numbers 0-9 and the first '-' sign to indicate if pos/neg. The algorithm works like I want it to, but is there a ...
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Credit card validator using Luhn's algorithm
I'm writing an algorithm to read from a file a list of numbers, and for each, determine if it is valid. If it is, then display which card type it is.
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Verifying IPv6 addresses
While trying to learn Python I stumbled upon a question which asks you to write a code that is able to take an input and verify it to see whether it meets the IPv6 Criteria.
I wrote the following ...
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ISBN missing number solver
This is a programming contest question. Question as follows
Problem Definition
An ISBN (International Standard Book Number) is a ten digit code that
uniquely identifies a book. The first 9 ...
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Determining if all strings are parsable to int
I have to loop through a list of strings and validate that all are parsable to int and not less than 1. Also, if a string is ...
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Is it better practice to have void method throw an exception or to have the method return a boolean?
This falls straight into the same category with the recent "Is it better practice to return if false or execute an if statement if true?" question.
Often, while writing code, I find myself presented ...
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"Who are you, and where do you live?" — a Q&A exercise
This is my first attempt at a programme. Is it good form? Does it follow best practice? Or am I completely off the mark?
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Regex validation for Email Address
I need to validate whether my regex is correct for below scenario. Suggestion's if the regex is correct:
Wiki Link Local_part
The local-part of the email address may use any of these ASCII ...
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Validating integer or string input
I'm at uni and working on an assignment in c# that takes some user input (from they keyboard via console).
The input validation required:
numbers must be within range (range will vary depending on ...
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Validating Excel file columns
I'm looking for ways to improve this code (more readable, less redundant and maybe cleaner/faster).
The problem I needed to solve:
I was designated to implement a software that is going to validate ...
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Click event function that checks to see if form field is valid
What I'm building is a URL builder. A marketing person inputs a URL and can test that URL to see if it's valid, then they select a demand channel and then hit 'Generate Campaign URL'. I've omitted the ...
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C Program which compares software version strings
I wrote the following C program to compare software version strings. Please provide any general feedback you'd like, but with special focus on error handling decisions, user input validation/...
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while(user == gullible)
The goal for this project was to:
Write a program that continues to asks the user to enter any number other than 5 until the user enters the number 5.
Then tell the user "Hey! you weren't ...
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E-mail testing code
I made some code to check that e-mails given apply to the right format, and I'm sure there must be a better way to do this.
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Credit card validation
I started following Harvard's CS50 (Introduction to Computer Science) on edX, and as part of their Hacker edition set 1 was the following assignment:
I am supposed to write a program (in C), that ...
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Validate and import data from an Excel file
I have recently designed a module which will do bulk upload for different contents. Basically the user will upload an Excel file, I will have to read and validate headers of excel then each value of ...
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Pythonic way for validating and categorizing user input
In multiple parts of my program, user input needs to be validated and categorized. As these "validation trees" can get pretty unwieldy, I've started splitting them out in different functions,...
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Validation that also returns error messages
My Create, Update and Delete methods should return a ...
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Foolproof number validation
I know there have been a lot of post, blog article answer on Stack Overflow (but the validation does return true on a tab character) about this. But I'm still ...
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Bitcoin address validator in C
Here is a Bitcoin address validator I am looking to have reviewed in C. Normally I would have the enum and function prototypes declared in a header file, but I ...
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Check whether address criteria contain only certain fields or more
I have a method that checks whether an addressCriteria contains only certain fields or more. If it contains more fields, it should return false, otherwise true.
I'...
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Versatile string validation
I passed a technical test the other day, one part included a cheap string validation and I am wondering this can be further improved to be more versatile to requirement changes.
The requirements were ...
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Birthday validity-checking
I have written code to check any birthday input's validity. As I am new in programming, and after going through several debugging steps, the code became very ugly.
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Proper way to validate from sub to sub
I am using a public validating sub to help validate the other subs. Is this the most efficient way to do this?
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Bank card validation module
I hope that someone could review a module I wrote for bank card validation. I included a class that tests some of the methods, which is purely to show the methods work, rather than unit testing.
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Checking whether a string is a valid number
I'm developing a Java Helper Library which has useful methods developers don't want to type out over and over. I'm trying to think of the best way of checking whether a string is a valid number.
I've ...
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Preconditions library
Over the past year I've quietly developed a library for checking method preconditions. The project is hosted at https://bitbucket.org/cowwoc/preconditions/
I would like to get your feedback on the ...
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C library for standard input operations with data validation and error check
I have implemented a C library to perform basic input operations on built-in data types with various error checks of more complexity. Any improvements or suggestions are appreciated.
GitHub
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A general purpose GUI data input, with validation, but unclear about best object design
When I'm throwing together prototype code, I don't want to spend extra time setting up parameters, or chasing down problems from entering parameters wrongly. So this is a general purpose, fairly easy ...
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Verify that a path doesn't contain . or .. or // and doesn't end with /
This is actually a function from the first commit of the git source code, for the purpose stated in the title:
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