Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Several of the solutions in earlier chapters used the Random class to generate random numbers."

A block of code is set as follows:

private int FindError(string string1, string string2)
{
    int error = 0;
    for (int i = 0; i < string1.Length; i++)
        error += Math.Abs((int)string1[i] - (int)string2[i]);
    return error;
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

{
    string testSubstring = string1.Substring(startPos, length);
    int testPos = string2.IndexOf(testSubstring);
    if (testPos < 0) break;

    bestLength = length;
    bestSubstring = testSubstring;
}

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "In the Add Item dialog, I selected the MP3 file and clicked Add."