You can search it on the individual character at fileformat.info. Enter # as search string and the 1st hit will lead you to U+0023. Scroll a bit down to the 2nd table, Encodings, you’ll see under each the following entries: HTML Entity (decimal) # HTML Entity (hex) #
× Unicode: U+00D7 MULTIPLICATION SIGN HTML: ×, × CSS: \00d7 See the Wikipedia article about the multiplication sign: In mathematics, the symbol × (read as times or multiplied by) is primarily used to denote the […] Geometric dimension of an object, such as noting that a room is 10×12 feet in area. Depending on the … Read more
3s, “substitute 3 characters” is the same as c3l. 3cl and c3l should be the same, I don’t know why you’d see the same character repeated. I’m also a fan of using t, e.g. ct_ as another poster mentioned, then I don’t have to count characters and can just type “del”. I struggled with the … Read more
It is called index. For e.g. >>> import string >>> string.lowercase.index(‘b’) 1 >>> Note: in Python 3, string.lowercase has been renamed to string.ascii_lowercase.
Try this may work for you public class MainActivity extends Activity { private EditText editText; private String blockCharacterSet = “~#^|$%&*!”; private InputFilter filter = new InputFilter() { @Override public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) { if (source != null && blockCharacterSet.contains((“” + source))) { return “”; } … Read more
Using Apache Commons Lang: !StringUtils.isAlphanumeric(String) Alternativly iterate over String’s characters and check with: !Character.isLetterOrDigit(char) You’ve still one problem left: Your example string “abcdefà” is alphanumeric, since à is a letter. But I think you want it to be considered non-alphanumeric, right?! So you may want to use regular expression instead: String s = “abcdefà”; Pattern … Read more
edit/update Swift 5.2 or later extension StringProtocol { var asciiValues: [UInt8] { compactMap(\.asciiValue) } } “abc”.asciiValues // [97, 98, 99] In Swift 5 you can use the new character properties isASCII and asciiValue Character(“a”).isASCII // true Character(“a”).asciiValue // 97 Character(“á”).isASCII // false Character(“á”).asciiValue // nil Old answer You can create an extension: Swift 4.2 or … Read more
You have assigned a character literal, which is delimited by single quotes, eg ‘a’ (as distinct from a String literal, which is delimited by double quotes, eg “a”) to an int variable. Java does an automatic widening cast from the 16-bit unsigned char to the 32-bit signed int. However, when a character literal is a … Read more
You want the unicode character ZERO-WIDTH SPACE (\u200B). You can get it in HTML with ​ or ​. Explicit breaks and non-breaks: LB7 : Do not break before spaces or zero width space. LB8 : Break before any character following a zero-width space, even if one or more spaces intervene. http://unicode.org/reports/tr14/
Here’s a simple, pure-Python implementation. It should be used when performance is not critical (included for future Googlers). import string allowed = set(string.ascii_lowercase + string.digits + ‘.’) def check(test_str): set(test_str) <= allowed Regarding performance, iteration will probably be the fastest method. Regexes have to iterate through a state machine, and the set equality solution has … Read more