Vim insert commands

Vim FAQ: What is the Vim insert command?

Short answer: Type the letter 'i' while in Vim command mode. You'll then be able to type text into your document, right where the cursor is currently positioned.

Vim insert commands

Longer answer: There are several other variations of the Vim insert command you can use:

How to concatenate strings in Perl

A Perl FAQ is "How do you concatenate (merge) two or more strings in Perl?"

Use the "." operator

The short answer is that you use the . operator. Here's a simple example:

$name = "alvin" . " " . "alexander";

Of course I could have also done that like this:

$name = "alvin " . "alexander";

but I wanted to show an example with more than two strings.

How to append text to a file with Ruby

Ruby file FAQ: How do I append text to a file in Ruby?

Solution: Appending text to a file with Ruby is similar to other languages: you need to open the file in "append" mode, write your data, and then close the file.

Here's a quick example that demonstrates how to append "Hello, world" to a file named myfile.out in the current directory:

How to append text to a file with the Java FileWriter class

Java file writing FAQ: How do I append text to the end of a text file in Java?

The short answer is that you should create a FileWriter instance with the append flag set to true, like this:

BufferedWriter bw = new BufferedWriter(new FileWriter("checkbook.dat", true));

The rest of this article explains this.