I am extracting a tweet from twitter which has an emoticon in it using python and storing it in csv file. The emoticon is represented in "\ud83d\ude01" form. I want to convert it into Unicode format (U+1F603), how to convert it??
Thanks for your help in advance.
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i am a new developper
i don't know how to decode hexacidemal values to binary ones with springboot, Is There a default functions That can help me or should i develop functions by myself
Also ,i want to compare the result with another one , should the 2 values be String ?
thank You
When you group 4 bits(1 bit is binary) it form a tuple which represent by one Hex decimal number.
There is no need of converting Hex to binary(in string format).
If you still want to do this you can refer:
https://www.geeksforgeeks.org/java-program-to-convert-hexadecimal-to-binary/
I am using NPOI to generate an excel spreadsheet for my clients. My exchange rate is in decimal. However, I have to convert it to double because this is what the cellvalue accepts.
row.CreateCell(17).SetCellValue(Convert.ToDouble(document.ExchangeRate));
I do not want to do this. I want it to accept decimals and not do the conversion as when rounding some data is lost.
The way I overcome this is convert the decimals to String and then the excel representation will be in text.
So when you view the source of an email, there are several characters in there that should be converted back to UTF-8 by the email client.
For example, in Outlook, a source email may contain =C2=A9 which converts to the copyright symbol.
In ruby, is there a way that I can find these types of characters/patterns and convert them to HTML so that it's displayed in an HTML form? For example, taking things like =C2=A9 and converting it into its associated HTML format ©?
There are two things to consider. First, the original string format using = is called "quoted-printable". Force UTF-8 encoding. Then, use htmlentities to convert to HTML entities. Here is an example:
require 'htmlentities'
coder = HTMLEntities.new
string = '=C2=A9'.unpack("M").first.force_encoding('UTF-8')
coder.encode(string) # => "©"
coder.encode(string, :named) # => "©"
I hope you find that helpful.
I received string representating a bytes array to a web service :
"/9j/4AAQSkZJRgABAQEAYABgAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0aHBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL
... "
I want to know how to convert the bytes array to image bin file. Are there any gems to do that or do i need to manipulate it with File library.
I read some examples but not great solutions in Ruby.
Do i need first to convert string into bytes array and after file ? And what is the extention that i have to use ?
Thanks a lot.
Answer to the 1st part of your question
Your input looks like base64. so I'll assume you need to first decode from base64:
binary_data = Base64.decode64(data_from_web_service)
File.open('file_name', 'wb') {|f| f.write(binary_data)}
The answer to your 2nd part (how to detect the file extension) is the trickier part. Doesn't the web service return any information about this? If not, you may be successfull by analysing the magic number of the data.
Can you not just write the string to a file:
File.open('picture.jpg', 'w') { |file| file.puts(string) }
I have a string received via the gets.chomp of the TcpSocket class. How can I determine the encoding of this string? Then I need to convert it to the Windows console encoding so I can print it. Is there any built-in way or third-party library to do it in Ruby?
Thanks in advance.
How can I determine the encoding of this string?
Use this method #encoding- Returns the Encoding object that represents the encoding of obj.
Then I need to convert it to the Windows console encoding so I can print it...
Take look at the class Encoding to get the ideas, about how to convert to required encodings.