I’m trying to replace each , in the current file by a new line: :%s/,/\n/g But it inserts what looks like a ^@ instead of an actual newline. The file is not in DOS mode or anything. What should I do? If you are curious, like me, check the question Why is \r a newline … Read more
I have this string in my JavaScript code: “Test abc test test abc test test test abc test test abc” Doing: str = str.replace(‘abc’, ”); Seems to only remove the first occurrence of abc in the string above. How can I replace all occurrences of it? 7 79
How do I change the column labels of a pandas DataFrame from: [‘$a’, ‘$b’, ‘$c’, ‘$d’, ‘$e’] to [‘a’, ‘b’, ‘c’, ‘d’, ‘e’]. 3 32 RENAME SPECIFIC COLUMNS Use the df.rename() function and refer the columns to be renamed. Not all the columns have to be renamed: df = df.rename(columns={‘oldName1’: ‘newName1’, ‘oldName2’: ‘newName2’}) # Or … Read more
In java.lang.String, the replace method either takes a pair of char’s or a pair of CharSequence‘s (of which String is a subclass, so it’ll happily take a pair of String’s). The replace method will replace all occurrences of a char or CharSequence. On the other hand, the first String arguments of replaceFirst and replaceAll are regular expressions (regex). Using the wrong function can lead to subtle bugs.
String are immutable in Java. You can’t change them. You need to create a new string with the character replaced. String myName = “domanokz”; String newName = myName.substring(0,4)+’x’+myName.substring(5); Or you can use a StringBuilder: StringBuilder myName = new StringBuilder(“domanokz”); myName.setCharAt(4, ‘x’); System.out.println(myName);
I’m trying to replace a character at a specific index in a string. What I’m doing is: String myName = “domanokz”; myName.charAt(4) = ‘x’; This gives an error. Is there any method to do this? Best Answer String are immutable in Java. You can’t change them. You need to create a new string with the … Read more
