Throughout this book we use statement blocks (statements surrounded by curly braces) with all conditional statements, even if a block contains only one statement:
if (x == y) { trace("x and y are equal"); }
For the sake of terseness, ActionScript does not require curly braces when a conditional has only one substatement. A single substatement may quite legitimately be placed directly after an if or an else if statement without any curly braces, like this:
if (x == y) trace ("x and y are equal");
Or like this:
if (x == y) trace ("x and y are equal");
For some programmers, this style can be a little slower to read and slightly more error prone, though it undeniably saves room in source code.
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