unicode | 易学教程

Django - Display “Model Object” in the admin page instead of Object title

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问题 As displayed in the image it displays "Lecture Object" instead of the Lecture's title. As I've understood it, unicode should take care of this, but it doesn't seem to here. Here is my unicode method: def __unicode__(self): return self.title 回答1: To display a custom string as your Model's object representation, you should: In Python 2.x def __unicode__(self): return self.some_attr # What you want to show In Python 3.x def __str__(self): return self.some_attr # What you want to show 来源： https:/

How does UTF-16 achieve self-synchronization?

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问题 I know that UTF-16 is a self-synchronizing encoding scheme. I also read the below Wiki, but did not quite get it. Self Synchronizing Code Can you please explain me with an example of UTF-16? 回答1: In UTF-16 characters outside of the BMP are represented using a surrogate pair in with the first code unit (CU) lies between 0xD800—0xDBFF and the second one between 0xDC00—0xDFFF. Each of the CU represents 10 bits of the code point. Characters in the BMP is encoded as itself. Now the synchronization

unicode regular expressions c++

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unicode regular expressions c++

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unicode regular expressions c++

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How UTF-16 and UTF-8 conversion happen?

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问题 I'm kinda confused about unicode characters codepoints conversion to UTF-16 and I'm looking for someone who can explain it to me in the easiest way possible. For characters like "𐒌" we get; d801dc8c --> UTF-16 0001048c --> UTF-32 f090928c --> UTF-8 66700 --> Decimal Value So, UTF-16 hexadecimal value converts to " 11011000 00000001 11011100 10001100 " which is " 3624000652 " in decimal value, so my question is how do we got this value in hexadecimal?? and how can we convert it back to the

How can I construct a UTF-16 character in JavaScript from the surrogate pair?

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问题 The following calculates the UTF-16 surrogate pair for a Unicode codepoint (Face with Medical Mask). But how can I then construct the character from the surrogate pair, for use in a string? const codepoint = 0b11111011000110111 // 😷 const tmp = codepoint - 0x10000 const padded = tmp.toString(2).padStart(20, '0') const unit1 = (Number.parseInt(padded.substr(0, 10), 2) + 0xD800).toString(16) const unit2 = (Number.parseInt(padded.substr(10), 2) + 0xDC00).toString(16) // obviously hard-coding the

Spliting an emoji sequence in powershell

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问题 I have a text box that will be filled with emoji only. No spaces or characters of any kind. I need to split these emoji in order to identify them. This is what I have tried: function emoji_to_unicode(){ foreach ($emoji in $textbox.Text) { $unicode = [System.Text.Encoding]::Unicode.GetBytes($emoji) Write-Host $unicode } } Instead of printing the bytes one by one, the loop is running just once, printing the codes of all the emoji joined together. It's like all the emoji was a single item. I

PHP Unicode in JSON

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问题 I'm sending a JSON POST body to my PHP web service that looks something like this: { "foo": "☺" } When I echo out the body in the PHP, I see this: { "foo":"\xe2\x98\xba" } I've also tried sending the \uXXXX equivalent: { "foo": "\u263a" } This got further, in that the raw JSON string received had "foo":"\\u263a" , but after json_decode the value turned to \xe2\x98\xba . This is causing problems when I come to use the value in a JSON response. I get: json_encode(): Invalid UTF-8 sequence in

Reading Japanese filenames in windows, using Python and glob not working

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问题 I just setup PortablePython on my system, so I can run python scripts from PHP and I got some very basic code (Below) to list all the files in a directory, however it doesn't work with Japanese filenames. It works fine with English filenames, but it spits out errors (Below) when I put any file containing Japanese characters in the directory. import os, glob path = 'G:\path' for infile in glob.glob( os.path.join(path, '*') ): print("current file is: ", infile) It works fine using 'PyScripter