ascii

问题 My understanding is that the ASCII characters found in the range from 0x00 to 0x1f were included with Teletype machines in mind. In the modern era, many of them have become obsolete. I was curious as to which characters might still be found in a conventional string or file. From my experience programming in C, I thought those might be NUL, LF, TAB, and maybe EOT. I'm especially curious about BS and ESC, as I thought (similar to shift or control maybe) that those might be handled by the OS and

问题 I found this website with escape codes and I'm just wondering if someone has done this already so I don't have to spend couple of hours building this logic: StringBuffer sb = new StringBuffer(); int n = s.length(); for (int i = 0; i < n; i++) { char c = s.charAt(i); switch (c) { case '\u25CF': sb.append("●"); break; case '\u25BA': sb.append("►"); break; /* ... the rest of the hex chars literals to HTML entities */ default: sb.append(c); break; } } 回答1: These "codes" is a mere decimal

问题 I found this website with escape codes and I'm just wondering if someone has done this already so I don't have to spend couple of hours building this logic: StringBuffer sb = new StringBuffer(); int n = s.length(); for (int i = 0; i < n; i++) { char c = s.charAt(i); switch (c) { case '\u25CF': sb.append("●"); break; case '\u25BA': sb.append("►"); break; /* ... the rest of the hex chars literals to HTML entities */ default: sb.append(c); break; } } 回答1: These "codes" is a mere decimal

问题 Can cut be used in bash with the ¬ delimiter? This question is an extension of the topic covered here. One interpretation of the goal in that link is to use a delimiter that can not be found (or very rarely found) in human text. Say we choose the 'Not Sign' ( ¬ ) as a delimiter. My question is regarding the use of cut to pull specific columns of a file with said delimiter. For example, say that we create a file with the ¬ delimiter. The file prac.txt might look like: $cat prac.txt "Billy""Car

问题 I would like to check, in C#, if a char contains a non-ASCII character. What is the best way to check for special characters such as 志 or Ω ? 回答1: ASCII ranges from 0 - 127, so just check for that range: char c = 'a';//or whatever char you have bool isAscii = c < 128; 回答2: bool HasNonASCIIChars(string str) { return (System.Text.Encoding.UTF8.GetByteCount(str) != str.Length); } 来源： https://stackoverflow.com/questions/18596245/in-c-how-can-i-detect-if-a-character-is-a-non-ascii-character

问题 Hi I need to be able to convert a ascii character into its decimal equivalent and vice-versa. How can I do that? 回答1: num=ord(char) char=chr(num) For example, >>> ord('a') 97 >>> chr(98) 'b' You can read more about the built-in functions in Python here. 回答2: Use ord to convert a character into an integer, and chr for vice-versa. 回答3: ord 回答4: You have to use ord() and chr() Built-in Functions of Python. Check the below explanations of those functions from Python Documentation. ord() Given a

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Convert character to ASCII code in Javascript my requirement is to get the ASCII value of the alphabet letters... Can anyone suggest how to do this in JavaScript? 回答1: Here is the example: var charCode = "a".charCodeAt(0); console.log(charCode); Or if you have longer strings: var string = "Some string"; for (var i = 0; i < string.length; i++) { console.log(string.charCodeAt(i)); } String.charCodeAt(x) method

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Convert character to ASCII code in Javascript my requirement is to get the ASCII value of the alphabet letters... Can anyone suggest how to do this in JavaScript? 回答1: Here is the example: var charCode = "a".charCodeAt(0); console.log(charCode); Or if you have longer strings: var string = "Some string"; for (var i = 0; i < string.length; i++) { console.log(string.charCodeAt(i)); } String.charCodeAt(x) method

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I have a ascii file containing 2048 x and y value pairs. I just want to know how to plot fft of y in MATLAB. I am writing following MATLAB code but could not be able to find appropriate result. How can I do this? This is what I have tried: I = load('data1.asc'); for i = 1:2048 y = I(:,2); end plot(x) Fs = 40000;

问题 I am trying to remove non-ascii characters from a file. I am actually trying to convert a text file which contains these characters (eg. hello§‚å½¢æˆ äº†å¯¹æ¯”ã€‚ 花å) into a csv file. However, I am unable to iterate through these characters and hence I want to remove them (i.e chop off or put a space). Here's the code (researched and gathered from various sources) The problem with the code is, after running the script, the csv/txt file has not been updated. Which means the characters are