Which characters make a URL invalid? - Stack Overflow
Oct 10, 2009 · 12 All valid characters that can be used in a URI (a URL is a type of URI) are defined in RFC 3986. All other characters can be used in a URL provided that they are "URL …
What does the @Valid annotation indicate in Spring?
Aug 29, 2010 · IIRC @Valid isn't a Spring annotation but a JSR-303 annotation (which is the Bean Validation standard). What it does is it basically checks if the data that you send to the method …
Difference between @Valid and @Validated in Spring
Mar 23, 2016 · In the example code snippets of the question, @Valid and @Validated make no difference. But if the @RequestBody is annotated with a List object, or is a string value …
How do I check if a string is valid JSON in Python?
310 In Python, is there a way to check if a string is valid JSON before trying to parse it? For example working with things like the Facebook Graph API, sometimes it returns JSON, …
regex - Validating IPv4 addresses with regexp - Stack Overflow
Following are the rules defining the valid combinations in each number of an IP address: Any one- or two-digit number. Any three-digit number beginning with 1. Any three-digit number …
how to check if a form is valid programmatically using jQuery ...
Jan 27, 2019 · $("#form_id").valid(); Checks whether the selected form is valid or whether all selected elements are valid. validate () needs to be called on the form before checking it using …
html - What characters are valid in a URL? - Stack Overflow
There's what's technically a valid URL and what's actually used as a URL today. Only 25% of the internet is even written in English. #2 and #4 languages are Chinese and Arabic.
Asking the user for input until they give a valid response
Apr 25, 2014 · The simplest way to accomplish this is to put the input method in a while loop. Use continue when you get bad input, and break out of the loop when you're satisfied. When Your …
How can I check if a string is a valid number? - Stack Overflow
Often, a 'valid number' means a Javascript number excluding NaN and Infinity, ie a 'finite number'. To check the numerical validity of a value (from an external source for example), you can …
Is an xml attribute without a value, valid? - Stack Overflow
Aug 3, 2011 · I want to have an XML attribute without any value, which simply has one meaning when it exists or does not exist. Is that valid?