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Optimum Regular Expression

By : Haizatul Aziah
Date : September 14 2020, 07:00 PM
help you fix your problem I have a hypothetical path for which I want a simple PCRE regular expression. For the purpose of simplicity, let's assume it is three levels deep and that each folder's name is A, B and C respectively. , Although these
code :

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Create a program that inputs a regular expression and outputs strings that satisfy that regular expression

By : user1490009
Date : March 29 2020, 07:55 AM
Hope that helps Well a regex is convertible to a DFA which can be thought of as a graph. To generate a string given this DFA-graph you'd just find a path from a start state to an end state. You'd just have to think about how you want to handle cycles (Maybe traverse every cycle at least once to get a sampling? n times?), but I don't see why it wouldn't work.

According to this css code, if I resize images to 640px will that make download optimum or near optimum?

By : Ganesh Raskar
Date : March 29 2020, 07:55 AM
wish help you to fix your issue The download size will always be the same: Specifying a width will only change the way the image file is displayed in the browser.
Specifying an image size different from the file's original size will give the browser more work resizing it, and there will always be a slight loss in quality (although nowadays not as much as it used to be.)

Optimum Regular Expression: Repeat Occurrences

By : Andrew Shika
Date : March 29 2020, 07:55 AM
should help you out The first issue here is correctness. As written, your regex will match starting at the beginning of the first tag, no matter what its class attribute is. (demo) You need to replace the internal .*?s with something that can't match beyond the tag boundaries, i.e., [>]*.
That will also cut down enormously on the amount of backtracking, improving performance considerably. The other thing you should do is get rid of the (.*?) at either end. Anything not matched by the regex is unaffected by the replace operation, so you're just making it do unnecessary work.
code :

Pass Old Regular Expression Pattern to New Custom Regular Expression to Exclude Specific Characters

By : Till Matthis Maessen
Date : March 29 2020, 07:55 AM
To fix this issue I have a program with a lot of string constants being used to allow specific characters via Regular Expressions. I now have a list of characters I want to block everywhere, but I don't want to have to go back through all my old string constants and rewrite them. Instead, I want to create of list of restricted characters and edit that list in only one place (in case it changes in the future). I'll then run all the string constants through a custom Regular Expression. , Actually figured out what I'm trying to do:
code :
int indexPropRegex = propRegex.IndexOf('^');
string restrictedCharsAction = "(?!.*[" + restricedChars + "]);
propRegex = indexPropRegex == -1 ? propRegex.Insert(0, restrictedCharsAction) : propRegex.Insert(indexPropRegex +1, restrictedCharsAction);
return propRegex;

Regex | Pattern attribute value is not a valid regular expression: Uncaught SyntaxError: Invalid regular expression

By : user3321897
Date : March 29 2020, 07:55 AM
like below fixes the issue The regex itself is not really validating the phone numbers well, but since you are happy with the pattern, see below how it should be used in JS and HTML5 pattern attribute.
In JS, you need to use
code :
var rx = /^\(?[\d +\/()–-]{6,}\)?[ .\/–-]?\d+$/;
// Test
console.log(rx.test("02162 - 54 91 44 79"));
input:valid {
  color: black;
  border: 5px solid #dadadada;
  border-radius: 7px;
input:invalid {
  color: navy;
  outline: none;
  border-color: #ff1050;
  box-shadow: 0 0 10px #ff0000;
<form name="form1"> 
 <input pattern="\(?[\d +\/()–-]{6,}\)?[ .\/–-]?\d+" title="Please enter a valid phone number!" value="(02162) 54 91 44 79" />
 <input type="Submit"/> 
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