In every language that I can think of, except C++, the function Replace essentially replaces all pieces of a string, whereas C++'s string class does not support simple operations like the following:
string s = "Hello World";
s = s.Replace("Hello", "Goodbye");
echo s; // Prints "Goodbye World"
This seems the most common use of any type of string replace function, but there doesn't seem to be a standard replace function in C++. Am I missing something here?
EDIT: I'm aware that there's not a built-in replace function like this in the standard library -- I'm wondering if there is a more or less standard implementation made from standard algorithms or something of that sort.
Replace part of a string with another string in C++ In C++ the replacing is very easy. There is a function called string. replace(). This replace function replaces only the first occurrence of the match.
To change a specific character in a string to another value, we refer to the index number position of the character in the string and use single quotation marks ( ' ' ). To access a character of a string in C++, we simply specify the index position of the character in the string in square brackets [] .
replace() Method. This method returns a new string resulting from replacing all occurrences of old characters in the string with new characters.
The replace() method returns a new string with one, some, or all matches of a pattern replaced by a replacement .
You're not missing anything, its not in the standard library.
You can either write that yourself using find()
, replace()
etc. or use an implementation like replace_all()
from Boosts string algorithm library.
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