Function definition: Difference between revisions
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imported>RonReu |
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end</syntaxhighlight> |
end</syntaxhighlight> |
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A function in AppleScript is called a "handler". It can take one of three different forms, depending on what the scripter finds most convenient. Calls to it must match the form used in the handler definition |
A function in AppleScript is called a "handler". It can take one of three different forms, depending on what the scripter finds most convenient. Calls to it must match the form used in the handler definition. Either <code>to</code> or <code>on</code> may be used as the first word in the handler definition. When the script is compiled, the handler label is automatically appended to the <code>end</code> line too if it wasn't written in. |
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Handler names followed by zero or more parameters within parentheses are called "positional" -- the number and order of the parameters in the caller must match those in the handler definition. |
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<syntaxhighlight lang="applescript">on multiply(a, b) |
<syntaxhighlight lang="applescript">on multiply(a, b) |
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multiply(2, 3)</syntaxhighlight> |
multiply(2, 3)</syntaxhighlight> |
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AppleScript also offers handlers with " |
AppleScript also offers handlers with "prepositional" labeled parameters. These aren't used often because the set of AppleScript-defined prepositions makes it difficult to choose ones that make sense in English. |
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These prepositions can be used: <code>about, above, against, apart from, around, aside from, at, below, beneath, beside, between, by, for, from, instead of, into, on, onto, out of, over, since, thru, through, and under</code>. Also, <code>of</code> is also available, but if used it must be the first parameter. |
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Example: |
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<syntaxhighlight lang="applescript">on multiplication of a by b |
<syntaxhighlight lang="applescript">on multiplication of a by b |
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