I’m trying to write a function that capitalizes the first letter of every word in a string (converting the string to title case). For instance, when the input is “I’m a little tea pot”, I expect “I’m A Little Tea Pot” to be the output. However, the function returns “i’m a little tea pot”. This … Read more
I’m trying to remove the last 3 characters from a string in python, I don’t know what these characters are so I can’t use rstrip, I also need to remove any white space and convert to upper-case an example would be: foo = “Bs12 3ab” foo.replace(” “, “”).rstrip(foo[-3:]).upper() This works and gives me BS12 which … Read more
What is the most idiomatic way to do the following? def xstr(s): if s is None: return ” else: return s s = xstr(a) + xstr(b) update: I’m incorporating Tryptich’s suggestion to use str(s), which makes this routine work for other types besides strings. I’m awfully impressed by Vinay Sajip’s lambda suggestion, but I want … Read more
OK, so I don’t sound like an idiot I’m going to state the problem/requirements more explicitly: Needle (pattern) and haystack (text to search) are both C-style null-terminated strings. No length information is provided; if needed, it must be computed. Function should return a pointer to the first match, or NULL if no match is found. … Read more
I wrote some Rust code that takes a &String as an argument: fn awesome_greeting(name: &String) { println!(“Wow, you are awesome, {}!”, name); } I’ve also written code that takes in a reference to a Vec or Box: fn total_price(prices: &Vec<i32>) -> i32 { prices.iter().sum() } fn is_even(value: &Box<i32>) -> bool { **value % 2 == … Read more
Is there a clean, preferably standard method of trimming leading and trailing whitespace from a string in C? I’d roll my own, but I would think this is a common problem with an equally common solution. 40 Answers 40 If you can modify the string: // Note: This function returns a pointer to a substring … Read more
The Javadoc about String.intern() doesn’t give much detail. (In a nutshell: It returns a canonical representation of the string, allowing interned strings to be compared using ==) When would I use this function in favor to String.equals()? Are there side effects not mentioned in the Javadoc, i.e. more or less optimization by the JIT compiler? … Read more
I am looking for an efficient way to remove unwanted parts from strings in a DataFrame column. Data looks like: time result 1 09:00 +52A 2 10:00 +62B 3 11:00 +44a 4 12:00 +30b 5 13:00 -110a I need to trim these data to: time result 1 09:00 52 2 10:00 62 3 11:00 44 … Read more
I need to do a simple split of a string, but there doesn’t seem to be a function for this, and the manual way I tested didn’t seem to work. How would I do it? 17 Answers 17
This question already has answers here: Why can’t strings be mutable in Java and .NET? (17 answers) Closed 9 years ago. As we all know, String is immutable. What are the reasons for String being immutable and the introduction of StringBuilder class as mutable? 13 Answers 13
