unicode

问题 I know that to check whether a string is printable, we can do something like: def isprintable(s,codec='utf8'): try: s.codec(codec) except UnicodeDecodeError: return False else: return True But is there a way to do it with Unicode, not a string? Btw, I'm working with tweets, and I convert the tweets to Unicode as follows text=unicode(status.text) 回答1: You are looking for a test for a range of codepoints, so you need a regular expression: import re # match characters from ¿ to the end of the

问题 I know that to check whether a string is printable, we can do something like: def isprintable(s,codec='utf8'): try: s.codec(codec) except UnicodeDecodeError: return False else: return True But is there a way to do it with Unicode, not a string? Btw, I'm working with tweets, and I convert the tweets to Unicode as follows text=unicode(status.text) 回答1: You are looking for a test for a range of codepoints, so you need a regular expression: import re # match characters from ¿ to the end of the

问题 I was scouring through SO answers and found that the solution that most gave for replacing multiple spaces is: $new_str = preg_replace("/\s+/", " ", $str); But in many cases the white space characters include UTF characters that include line feed, form feed, carriage return, non-breaking space, etc. This wiki describes that UTF defines twenty-five characters defined as whitespace. So how do we replace all these characters as well using regular expressions? 回答1: When passing u modifier, \s

问题 For long time we used naive approach to split strings in JS: someString.split(''); But popularity of emoji forced us to change this approach - emoji characters (and other non-BMP characters) like 😂 are made of two "characters'. String.fromCodePoint(128514).split(''); // array of 2 characters; can't embed due to StackOverflow limitations So what is modern, correct and performant approach to this task? 回答1: The best approach to this task is to use native String.prototype[Symbol.iterator] that's

问题 I'm trying to write Unicode strings from R to SQL, and then use that SQL table to power a Power BI dashboard. Unfortunately, the Unicode characters only seem to work when I load the table back into R, and not when I view the table in SSMS or Power BI. require(odbc) require(DBI) require(dplyr) con <- DBI::dbConnect(odbc::odbc(), .connection_string = "DRIVER={ODBC Driver 13 for SQL Server};SERVER=R9-0KY02L01\\SQLEXPRESS;Database=Test;trusted_connection=yes;") testData <- data_frame(Characters =

问题 Python allows unicode identifiers. I defined Xᵘ = 42 , expecting XU and Xᵤ to result in a NameError . But in reality, when I define Xᵘ , Python (silently?) turns Xᵘ into Xu , which strikes me as somewhat of an unpythonic thing to do. Why is this happening? >>> Xᵘ = 42 >>> print((Xu, Xᵘ, Xᵤ)) (42, 42, 42) 回答1: Python converts all identifiers to their NFKC normal form; from the Identifiers section of the reference documentation: All identifiers are converted into the normal form NFKC while

问题 Can't change color on the following characters: <div style="font-size: 25px; color:red;">🔍</div> <div style="font-size: 25px; color:red;">📣</div> while some other unicode chars accept color property: <div style="font-size: 25px; color:red;">⚙</div> Is there any way to change color on the previous chars? https://jsfiddle.net/cs5053ka/ 回答1: On many systems, emoji characters like 🔍 and 📣 are drawn differently from regular characters. While symbols like % are drawn by filling in a vector outline,

问题 Can't change color on the following characters: <div style="font-size: 25px; color:red;">🔍</div> <div style="font-size: 25px; color:red;">📣</div> while some other unicode chars accept color property: <div style="font-size: 25px; color:red;">⚙</div> Is there any way to change color on the previous chars? https://jsfiddle.net/cs5053ka/ 回答1: On many systems, emoji characters like 🔍 and 📣 are drawn differently from regular characters. While symbols like % are drawn by filling in a vector outline,

问题 I was working on an app, which takes input in a language called "Tamil". So in order to find the range of any particular charater in the string i have used the below code. var range = originalWord.rangeOfString("\(character)") println("\(range.location)") So this works fine except for some cases. there are some characters like this -> í , ó . // am just saying an example. So like this combination, in other languages there are several vowel diacritcs are there. If i have this word "alv`in" //

问题 I was working on an app, which takes input in a language called "Tamil". So in order to find the range of any particular charater in the string i have used the below code. var range = originalWord.rangeOfString("\(character)") println("\(range.location)") So this works fine except for some cases. there are some characters like this -> í , ó . // am just saying an example. So like this combination, in other languages there are several vowel diacritcs are there. If i have this word "alv`in" //