Manipulating strings

A basic ability when dealing with text is to be able to properly manipulate that text. That means to be able to join it, split it into regular chunks, or change it to be uppercase or lowercase. We'll discuss more advanced methods for parsing text and separating it later, but in lots of cases it is useful to divide a paragraph into lines, sentences, or even words. Other times, words will have to have some characters removed or replaced with a canonical version to be able to compare it with a determined value.