validation

问题 I have a project where I want to validate a character input in C. I am new to the C language and also not very experienced in programming. I have tried to make a loop for validation but it is not working. #include<stdio.h> void main(){ char input; do { scanf("%c", &input); while ( (input != 'a') && (input != 'b') && (input != 'c') ); printf ("wrong input"); switch(input){ case 'a': break; case 'b': break; case 'c': break; } while ( input != 'c'); 回答1: Taking user input in C, isn't difficult,

问题 Hibernate 4.x and 3.x has method Configuration#validateSchema that allows to verify that current database schema matches the object model. However the method is missing in version 5. How the database schema can be validated in Hibernate 5? 回答1: The functionality was extracted and is accessible through interface SchemaValidator. 来源： https://stackoverflow.com/questions/42013850/validate-database-schema-in-hibernate-5

问题 I'm doing a regex check valid email function and I get a vague error that it's not a function. These are the answers I referenced: A simple jQuery form validation script Validate email with a regex in jQuery JavaScript regexp match against variable email domain The basic gist of the last two answers is to run a .test() running it against the email input. So from the third question I linked: var userinput = 'dirk@something.com'; var domain = 'somethingelse.com'; var pattern = /^\b[A-Z0-9._%-]+

问题 I'm trying to validate a DateFrom field so that it's gives an error message whenever the user inputs the date before or equal to todays date. But somehow the method I'm using doesn't work (no error message is shown). Any suggestions? I'm required to use RuleBuilder and this is my first time using it. My current code: RuleFor(x => x.DateFrom) .NotNull() .DataType(DataType.Date) .GreaterThanOrEqualTo(DateTime.Now) .WithMessage("Date To must be after Date From") .AdditionalMetadata("class",

问题 We are using azure dev ops for CICD and validating PR's. Yesterday I decided to start making yaml files for validation builds. I created the pipeline. I set the branch policy for 'development' fine and the validation build ran okay. However, something I see is that each time ANY branch gets a change to the files of the directory I've set the validation build for a build triggers. So, let's say I've made a yaml pipeline(CI only) for project Main(src/Main) and i've set a branch policy on branch

问题 I have an text input box which needs to be validated. The user should be only able to enter the date in dd-Mmm-yyyy format. ex: 01-Jun-2013, 31-Aug-2015 and so on. Or they should be able to enter T+1, T+2,...T+99. What kind of a regex pattern I could use to validate both of these. I think for validating the dd-Mmnm-yyyy, the following regex works: ^(([0-9])|([0-2][0-9])|([3][0-1]))\-(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\-\d{4}$ Please help me with this! Update: I just need the

问题 I have an text input box which needs to be validated. The user should be only able to enter the date in dd-Mmm-yyyy format. ex: 01-Jun-2013, 31-Aug-2015 and so on. Or they should be able to enter T+1, T+2,...T+99. What kind of a regex pattern I could use to validate both of these. I think for validating the dd-Mmnm-yyyy, the following regex works: ^(([0-9])|([0-2][0-9])|([3][0-1]))\-(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\-\d{4}$ Please help me with this! Update: I just need the

问题 I am using get.fail() to check if there's any char in the input, and if there is I would like to give the user a chance to re-enter. However, the program seems to still accept the user input whenever there's an integer in front of the input no matter the case. Say w1 and 1w , the program will tell the user that the it only accepts integers while the latter one accepts the input and moves over to the next line which then causes another problem. void userChoice(int input){ switch(input) { case

问题 I'm trying to write a little program where I ask the user to enter an email address. And then I verify if its a valid email address or not. Like "example@example.com" would be valid, but "example@@example.com.org" would be invalid. Here's my code, I have made it work to detect if there is an @ and . character in there, but I need to make sure it only appears once, and that the @ appears before the dot (.) import java.util.Scanner; public class email { public static void main(String args[]) {

问题 @Pattern(regexp="^\\w{8,}") private String username; This pattern can only consist of numbers, letters and the underscore character. How can I add the dot (.) to the pattern Thanks 回答1: Try this, it might be easier to understand if you explicitly define all valid characters: @Pattern(regexp="^[A-Za-z0-9_.]{8,}") private String username; 回答2: You need to add end of the line anchor also. @Pattern(regexp="^[.\\w]{8,}$") 来源： https://stackoverflow.com/questions/29515276/how-to-add-dot-to-regex