character

How do I read input character-by-character in Java?

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Use Reader.read(). A return value of -1 means end of stream; else, cast to char. This code reads character data from a list of file arguments: public class CharacterHandler { //Java 7 source level public static void main(String[] args) throws IOException { // replace this with a known encoding if possible Charset encoding = Charset.defaultCharset(); … Read more

What are all of the allowable characters for people’s names? [closed]

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There’s good article by the W3C called Personal names around the world that explains the problems (and possible solutions) pretty well (it was originally a two-part blog post by Richard Ishida: part 1 and part 2) Personally I’d say: support every printable Unicode-Character and to be safe provide just a single field “name” that contains … Read more

How to split strings into characters in Scala

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Do you need characters? “Test”.toList // Makes a list of characters “Test”.toArray // Makes an array of characters Do you need bytes? “Test”.getBytes // Java provides this Do you need strings? “Test”.map(_.toString) // Vector of strings “Test”.sliding(1).toList // List of strings “Test”.sliding(1).toArray // Array of strings Do you need UTF-32 code points? Okay, that’s a … Read more

Representing EOF in C code?

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EOF is not a character (in most modern operating systems). It is simply a condition that applies to a file stream when the end of the stream is reached. The confusion arises because a user may signal EOF for console input by typing a special character (e.g Control-D in Unix, Linux, et al), but this … Read more

Converting characters to integers in Java

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Character.getNumericValue(c) The java.lang.Character.getNumericValue(char ch) returns the int value that the specified Unicode character represents. For example, the character ‘\u216C’ (the roman numeral fifty) will return an int with a value of 50. The letters A-Z in their uppercase (‘\u0041’ through ‘\u005A’), lowercase (‘\u0061’ through ‘\u007A’), and full width variant (‘\uFF21’ through ‘\uFF3A’ and ‘\uFF41’ through … Read more

How to decode character pressed from jQuery’s keydown()’s event handler

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The keyPress event is what you need to get which character was entered. (See below workaround for keydown event). keydown and keyup provide a code indicating which key is pressed, while keypress indicates which character was entered. Using jQuery e.which you can get the key code and using String.fromCharCode you can get the specific character … Read more

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