You are printing a formatted string. The {0} means to insert the first parameter following the format string; in this case the value associated with the key “rtf”. For String.Format, which is similar, if you had something like you’d create a string “This is a test. The value is 42“. You can also use expressions, and print … Read more
It is possible to turn the string into a stream by using the std::stringstream class (its constructor takes a string as parameter). Once it’s built, you can use the >> operator on it (like on regular file based streams), which will extract, or tokenize word from it:
You’re talking about template literals. They allow for both multiline strings and string interpolation. Multiline strings: You’re talking about template literals. They allow for both multiline strings and string interpolation. Multiline strings: Run code snippetExpand snippet String interpolation: Run code snippetExpand snippet
By the way, use qualified-names such as std::getline, std::ifstream like I did. It seems you’ve written using namespace std somewhere in your code which is considered a bad practice. So don’t do that: Why is “using namespace std” considered bad practice?
Notice you’re not dynamically allocating the variable, which pretty much means the data inside str, in your function, will be lost by the end of the function. You should have: Then, when you call the function, the type of the variable that will receive the data must match that of the function return. So, you should … Read more
Since the question is specific to Python 3, here’s using the new f-string syntax, available since Python 3.6: Note the outer single quotes and inner double quotes (you could also do it the other way around).
In Python 2.x, you would do basestring is the abstract superclass of str and unicode. It can be used to test whether an object is an instance of str or unicode. In Python 3.x, the correct test is The bytes class isn’t considered a string type in Python 3.
I use a for loop to iterate the string and use charAt() to get each character to examine it. Since the String is implemented with an array, the charAt() method is a constant time operation. That’s what I would do. It seems the easiest to me. As far as correctness goes, I don’t believe that exists here. It is … Read more
An important point that often bites new Python programmers but the other posters haven’t made explicit is that strings in Python are immutable — you can’t ever modify them in place. You need to retrain yourself when working with strings in Python so that instead of thinking, “How can I modify this string?” instead you’re thinking “how … Read more