character

问题 In C#, how do you parse a string into individual characters? Given: word = “Wonderful”; Desired Result: letter[0] = ‘W’; letter[1] = ‘o’; letter[2] = ‘n’; letter[3] = ‘d’; letter[4] = ‘e’; letter[5] = ‘r’; letter[6] = ‘f’; letter[7] = ‘u’; letter[8] = ‘l’; 回答1: Char[] letters = word.ToCharArray(); 回答2: Strings actually have an indexer method for that ... string word = "Wonderful"; char letter1 = word[0]; // W char letter2 = word[1]; // o char letter3 = word[2]; // n etc.. 回答3: You don't have

问题 I'm trying to replace the "^" character on a String using: String text = text.replaceAll("^", "put this text"); If text as the following value: "x^my string" The resulting String is: "put this textx^my string" This only happens in case of the ^ character Why is this? 回答1: Just use the non-regex version String.replace() instead of String.replaceAll() : text = text.replace("^", "put this text"); 回答2: replaceAll expects a regexp as a first parameter. You need to escape it: text = text.replaceAll

问题 I'm working in R. I have many different data frames that have sample names in them and I'm trying to assign a color to each row in each data frame based on the sample names. There are many rows that have the same sample names in them, but I have messy output data so I can't sort by sample name. Here's a small example case of what I have names <- c( "TC3", "102", "172", "136", "142", "143", "AC2G" ) colors <- c( "darkorange", "forestgreen", "darkolivegreen", "darkgreen", "darksalmon",

问题 Is there a way in Java to determine whether a particular font can render a particular character? 回答1: Try Font f = ... ; // you have your font Character c = 'ن'; // Nun, N, in Farsi if(!f.canDisplay(c)) { int gcode = f.getMissingGlyphCode(); System.out.format("not supported. Glyph code used: %d\n", gcode); } 来源： https://stackoverflow.com/questions/6551587/determining-in-java-whether-a-particular-font-can-render-a-particular-character

问题 There are almost 808 chinese characters shared by china and japan and korea ,such as 門 (means door in English),the unicode value of chinese 門 is 9580,What about the japanese and korea 門 ? What are the unicode value of japanese and korea 門 ? Are they same? 回答1: I'm not particularly well versed in how Han characters are handled by Unicode, but it would appear that the character is shared. U+9580 sits under the CJK Unified Ideographs block. As wikipedia describes it: The Chinese, Japanese and

问题 I'm using htmlentities which is converting characteres with accents, but it is not converting this type of quotes “. Instead the browser shows a weird symbol with a question mark � How can I convert these kind of characteres that display as symbols? e.g. The book called �Hello Colors� is on the table. I've tried this commands but it's not working: htmlentities($message); htmlentities($message, ENT_QUOTES, 'UTF-8'); htmlentities($message, ENT_NOQUOTES, 'UTF-8'); htmlentities($message, ENT

问题 I have a varchar field with length 6. I want to split into single characters in MySQL. Currently I have tried with following script: col = '123456'; { select SUBSTRING(col,1, 1), SUBSTRING(col, 2,1), SUBSTRING(col, 3,1), SUBSTRING(col, 4,1), SUBSTRING(col, 5,1), SUBSTRING(col, 6,1) from tbl_table } The above script works but is there any other solution for this. Thank You. 回答1: There is no string split function in MySQL. so you have to create your own function. Use below link.This will help

问题 The problem i'm having is when i check to see if the string contains any characters it only looks at the first character not the whole string. For instance I would like to be able to input "123abc" and the characters are recognized so it fails. I also need the string to be 11 characters long and since my program only works with 1 character it cannot go any further. Here is my code so far: public static int phoneNumber(int a) { while (invalidinput) { phoneNumber[a] = myScanner.nextLine(); if

问题 I need to map 3-4 different dataframes that have different date formats. How can we convert date in format: YYYY-MM-DD to character in the format: MMM-YY 回答1: Create a date object from the string (skip this if your column is already in the Date format): original_date <- as.Date("2017-07-19", "%Y-%m-%d") Then format the original date to the new format: format(original_date, "%b-%y") # "Jul-17" The %b indicates the 3-letter abbreviation of the month and %y is the year without the century. You

问题 I have to compare two strings such as INTU and IXTE and check if two or more of the characters are the same. With the previous two strings, I'd want to return true , since the I and the T are the same. Order of letters in the string ends up being irrelevant as each character can not appear in different positions in the string. It seems like there should be an easy way to do this. 回答1: look at similar_text() . The following code is untested but i think it would work as you want. $a = "INTU";