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Questions tagged [character]

Refers to a symbol that represents a letter or number. Also, the bit pattern used to represent such a symbol.

In computer and machine-based telecommunications terminology, a character is a unit of information that roughly corresponds to a grapheme, grapheme-like unit, or symbol, such as in an alphabet or syllabary in the written form of a natural language. Examples of characters include letters, numerical digits, and common punctuation marks (such as '.' or '-'). The concept also includes control characters, which do not correspond to symbols in a particular natural language, but rather to other bits of information used to process text in one or more languages. Computers and communication equipment represent characters using a character encoding that assigns each character to something — an integer quantity represented by a sequence of bits, typically — that can be stored or transmitted through a network. Two examples of popular encodings are ASCII and the UTF-8 encoding for Unicode.

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Indexes of all occurrences of character in a string

The following code will print 2 String word = "bannanas"; String guess = "n"; int index; System.out.println( index = word.indexOf(guess) ); I would like to know how to get all the indexes of "n" ("guess") in the string "bannanas" The expected…
Trufa
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Set the maximum character length of a UITextField in Swift

I know there are other topics on this, but I can't seem to find out how to implement it. I'm trying to limit a UITextField to only five characters. Preferably alphanumeric, -, ., and _. I've seen this code: func textField(textField: UITextField,…
ishkur88
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Display special characters when using print statement

I would like to display the escape characters when using print statement. E.g. a = "Hello\tWorld\nHello World" print a Hello World Hello World I would like it to display: "Hello\tWorld\nHello\sWorld"
Ian Phillips
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Get the first character of the first string in a list?

How would I get the first character from the first string in a list in Python? It seems that I could use mylist[0][1:] but that does not give me the first character. >>> mylist = [] >>> mylist.append("asdf") >>> mylist.append("jkl;") >>>…
Trcx
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Can I use an at symbol (@) inside URLs?

Is it safe to use an @ symbol as part of a user? For example, a possible URL would be http://example.com/@dave. The idea is that, nowadays, users are commonly called "@user", so why not make the user page "@username"?
Geoff
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How to remove certain characters from a string in C++?

For example I have a user input a phone number. cout << "Enter phone number: "; INPUT: (555) 555-5555 cin >> phone; I want to remove the "(", ")", and "-" characters from the string. I've looked at the string remove, find and replace functions…
SD.
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How to get the last X Characters of a Golang String?

If I have the string "12121211122" and I want to get the last 3 characters (e.g. "122"), is that possible in Go? I've looked in the string package and didn't see anything like getLastXcharacters.
sourcey
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How can I check the first character in a string in Bash or Unix shell?

I'm writing a script in Unix where I have to check whether the first character in a string is "/" and if it is, branch. For example, I have a string: /some/directory/file I want this to return 1, and: server@10.200.200.20:/some/directory/file to…
canecse
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How many characters can be stored in 4KB?

How many characters can i store in 4kb when the characters are in utf-8 encoding ?
Pockata
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range over character in python

Is there an way to range over characters? something like this. for c in xrange( 'a', 'z' ): print c I hope you guys can help.
huan
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Characters allowed in GET parameter

Which characters are allowed in GET parameters without encoding or escaping them? I mean something like this: http://www.example.org/page.php?name=XYZ What can you have there instead of XYZ? I think only the following characters: a-z…
caw
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What is the maximum number of bytes for a UTF-8 encoded character?

What is the maximum number of bytes for a single UTF-8 encoded character? I'll be encrypting the bytes of a String encoded in UTF-8 and therefore need to be able to work out the maximum number of bytes for a UTF-8 encoded String. Could someone…
Edd
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How can I read a single character at a time from a file in Python?

In Python, given the name of a file, how can I write a loop that reads one character each time through the loop?
kaushik
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"\n" or '\n' or std::endl to std::cout?

It was many years now since I stopped using std::endl to end lines when writing to std::cout, and started using "\n" instead. But now I start seeing more snippets of code using '\n' instead, and I started wonder what might be best. Besides the…
Some programmer dude
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How to avoid pressing Enter with getchar() for reading a single character only?

In the next code: #include int main(void) { int c; while ((c=getchar())!= EOF) putchar(c); return 0; } I have to press Enter to print all the letters I entered with getchar, but I don't want to do this, what I want…
javier
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