Objective-C supports the following compound assignment operators:
Objective-C supports the following compound assignment operators:
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Operator Description
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x += y Add x to y and place result in x
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x -= y Subtract y from x and place result in x
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x *= y Multiply x by y and place result in x
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x /= y Divide x by y and place result in x
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x %= y Perform Modulo on x and y and place result in x
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x &= y Assign to x the result of logical AND operation on x and y
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x |= y Assign to x the result of logical OR operation on x and y
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x ^= y Assign to x the result of logical Exclusive OR on x and y
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<table border="1" cellspacing="0">
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<tr style="background:#efefef;">
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<th>Operator</th><th>Description</th>
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<tr>
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<td>x += y<td>Add x to y and place result in x</td>
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<tr>
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<td>x -= y<td>Subtract y from x and place result in x</td>
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<tr>
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<td>x *= y<td>Multiply x by y and place result in x</td>
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<tr>
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<td>x /= y<td>Divide x by y and place result in x</td>
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<tr>
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<td>x %= y<td>Perform Modulo on x and y and place result in x</td>
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<tr>
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<td>x &= y<td>Assign to x the result of logical AND operation on x and y</td>
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<tr>
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<td>x |= y<td>Assign to x the result of logical OR operation on x and y</td>
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<tr>
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<td>x ^= y<td>Assign to x the result of logical Exclusive OR on x and y</td>
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</table>
Another useful shortcut can be achieved using the Objective-C increment and decrement operators (also referred to as unary operators because they operate on a single operand). As with the compound assignment operators described in the previous section, consider the following Objective-C code fragment:
Another useful shortcut can be achieved using the Objective-C increment and decrement operators (also referred to as unary operators because they operate on a single operand). As with the compound assignment operators described in the previous section, consider the following Objective-C code fragment:
Clearly 10 is less than 20, resulting in a true evaluation of the x < y expression. The following table lists the full set of Objective-C comparison operators:
Clearly 10 is less than 20, resulting in a true evaluation of the x < y expression. The following table lists the full set of Objective-C comparison operators:
