Re: Checking on the existence of a file
Re: Checking on the existence of a file
- Subject: Re: Checking on the existence of a file
- From: Shane Stanley <email@hidden>
- Date: Tue, 04 Dec 2012 09:16:12 +1100
On 04/12/2012, at 7:32 AM, Harald E Brandt <email@hidden> wrote:
> Although explicit coercion to boolean is safest, I am curious to learn the rules, and why e.g NSFileManager does not need coercion.
I wish I could fathom them -- I tend to include the coercion regardless. Both fileExistsAtPath: and something like hasPrefix: are listed as returning BOOL, and both appear in the .bridgesupport files as "<retval type='B'/>", yet one returns a boolean and the other an integer. Mysterious.
And if you call one AS class from another, you get NSNumbers rather than boolean/integer/real. I presume that's due to the lack of any signature, but again I'm just guessing.
--
Shane Stanley <email@hidden>
'AppleScriptObjC Explored' <www.macosxautomation.com/applescript/apps/>
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