unicode

问题 All the MySQL tables in my PHP web application are MyISAM with utf8 encoding. Since records can be generated from a companion app while it's offline, my table keys are randomly generated, alphanumeric VARCHARs; these fields are set to binary with utf8_bin encoding so they can be case-sensitive. I recently decided to change the encoding of all my text fields, to support emojis that some users like to enter. I went ahead and changed all utf8 fields to utf8mb4, including the keys. I immediately

问题 All the MySQL tables in my PHP web application are MyISAM with utf8 encoding. Since records can be generated from a companion app while it's offline, my table keys are randomly generated, alphanumeric VARCHARs; these fields are set to binary with utf8_bin encoding so they can be case-sensitive. I recently decided to change the encoding of all my text fields, to support emojis that some users like to enter. I went ahead and changed all utf8 fields to utf8mb4, including the keys. I immediately

问题 While investigating some localization options, I stumbled across this as a save option in Visual Studio. What is Unicode code page 1200 exactly? The Microsoft documentation page Code Page Identifiers describes: Unicode UTF-16, little endian byte order (BMP of ISO 10646); available only to managed applications So is Unicode code page 1200 really UTF-16 and therefore has a BOM? Is it advisable to use this for JavaScript then, and if we have to use this, is a charset declaration necessary in the

问题 I am on a Linux system and set the keyboard setting to UK in order to capture and print out a UK pound symbol (£). Here is my code: #include <stdio.h> #include <wchar.h> #include <locale.h> int main () { wint_t wc; fputws (L"Enter text:\n", stdout); setlocale(LC_ALL, ""); do { wc=getwchar(); wprintf(L"wc = %lc %d 0x%x\n", wc, wc, wc); } while (wc != -1); return 0; } Also, I wanted to store the UK pound symbol (£) as part of a string. I've found that std::string does NOT indicate an accurate

问题 Arabic and Chinese have their own glyphs for digits. int works correctly with all the different ways to write numbers. I was not able to reproduce the behaviour (python 3.5.0) >>> from unicodedata import name >>> name('𐹤') 'RUMI DIGIT FIVE' >>> int('𐹤') ValueError: invalid literal for int() with base 10: '𐹤' >>> int('五') # chinese/japanese number five ValueError: invalid literal for int() with base 10: '五' Am I doing something wrong? Or is the claim simply incorrect (source). 回答1: int does

问题 Arabic and Chinese have their own glyphs for digits. int works correctly with all the different ways to write numbers. I was not able to reproduce the behaviour (python 3.5.0) >>> from unicodedata import name >>> name('𐹤') 'RUMI DIGIT FIVE' >>> int('𐹤') ValueError: invalid literal for int() with base 10: '𐹤' >>> int('五') # chinese/japanese number five ValueError: invalid literal for int() with base 10: '五' Am I doing something wrong? Or is the claim simply incorrect (source). 回答1: int does

问题 Arabic and Chinese have their own glyphs for digits. int works correctly with all the different ways to write numbers. I was not able to reproduce the behaviour (python 3.5.0) >>> from unicodedata import name >>> name('𐹤') 'RUMI DIGIT FIVE' >>> int('𐹤') ValueError: invalid literal for int() with base 10: '𐹤' >>> int('五') # chinese/japanese number five ValueError: invalid literal for int() with base 10: '五' Am I doing something wrong? Or is the claim simply incorrect (source). 回答1: int does

问题 Arabic and Chinese have their own glyphs for digits. int works correctly with all the different ways to write numbers. I was not able to reproduce the behaviour (python 3.5.0) >>> from unicodedata import name >>> name('𐹤') 'RUMI DIGIT FIVE' >>> int('𐹤') ValueError: invalid literal for int() with base 10: '𐹤' >>> int('五') # chinese/japanese number five ValueError: invalid literal for int() with base 10: '五' Am I doing something wrong? Or is the claim simply incorrect (source). 回答1: int does

问题 Let's imagine I have a UTF-8 encoded std::string containing the following: óó and I'd like to convert it to the following: ÓÓ Ideally I want the uppercase/lowercase approach I'm using to be generic across all of UTF-8. If that's even possible. The original byte sequence in the string is 0xc3b3c3b3 (two bytes per character, and two instances of ó ) and I'd like the output to be 0xc393c393 (two instances of Ó ). There are some examples on StackOverflow but they use wide character strings, and

问题 I need to restrict users input only to alpha numeric chars. If it was only in English It would be easy $[a-z]^/i But I need to do it global e.g. for every language. Is there any sequential unicode range that include all "chars" ? If not , How can I do it ? p.s. I saw this answer but the answer was for pythoin 回答1: If you use Steve Levithan's XRegExp package with Unicode add-ons, then it's easy: var regex = XRegExp('^\\p{L}*$'); (Note that ^ is the start-of-string anchor, and $ is the end-of