O$6.0.3 – Calling a method using a private method as a parameter

Hi Lawrence,

Try using the callprivate() function. Per the Omnis docs:

> Syntax
> callprivate(method[,parameters…])
>
> Description
> Calls the private method with the specified parameters and returns its return value

Here’s the example I put together. Given the method someMethod:

> pnValue1: Number floating dp
> pnValue2: Number floating dp
>
> Quit method pnValue1+pnValue2

And the method callMe:

>
> pnValue: Number floating dp
>
> Quit method con(“I received “,pnValue)

This code:

> Do method callMe (callprivate(“someMethod”,1.11,2.22)) Returns lcResult

Will produce “I received 3.33” as lcResult.

If you want to ensure the private method exists you can use $methods.$findname() per your example:

> Do method callMe (callprivate($cinst.$methods.$findname(“someMethod”).$name,1.11,2.22)) Returns lcResult

However, callprivate() will throw an error if the passed method name is invalid, so you might not need the extra validation.

Alex

> On Jun 3, 2017, at 08:26, lawrence@lawrencesmith.com wrote:
>
> no joy.
>
>
> Do method callMe($cclass.$methods.$findname(‘someMethod’).$name()) just passes the name ’someMethod’ to callMe. What i want is for someMethod to execute ‘in line’ and pass it’s return value to callMe.
>
>
>
> Lawrence
>
>
>> On Jun 3, 2017, at 8:09 AM, lawrence@lawrencesmith.com wrote:
>>
>> Vik,
>>
>>
>> Thanks for the reply.
>>
>> Yesterday I tried using
>>
>> do method callMe($cinst,$methods.someMethod)
>>
>> but that doesn’t work. i’ll try using .$findname and see if that does the trick. Ugly syntax and once again requires embedding a literal string in the code (something I avoid like the plague).
>>
>> On a different note I like $cando()
>>
>> Best,
>>
>> Lawrence
>>
>>> On Jun 3, 2017, at 4:54 AM, Vik Shah <Vik@Keys2Solutions.com.au> wrote:
>>>
>>> Hi Lawrence,
>>>
>>> I think what you are after is $cmethod.$name or is it $cmethod().$name. This will eliminate any unknown values being passed around.
>>> NOTE: passing in $cmethod as a parameter will pass a link to the current executing method before it jumped into the new method.
>>>
>>> So from the calling method you ca do, the following…
>>> 1. Do method callMe($cmethod().$name)
>>> 2. Do method callMe($cclass.$methods.$findname(‘someMethod’).$name())
>>>
>>> Another thing you can add to your “callMe” method is a test to see if the name exists… There are again a few ways of doing it…
>>> 1. if not(isclear($cclass.$methods.$findname(‘someMethod’)))…
>>> 2. if not($cclass.$methods.[method_name_var].$ident.$cando())
>>>
>>> The $cando() technique is a boolean test to see if a specific notation query can be executed.
>>>
>>> HTH
>>>
>>> Regards,
>>>
>>> Vik Shah
>>> Director
>>> Keys2Solutions
>>> AU: +61 411 493 495
>>> US: +1 (415) 413 4172
>>> US: +1 (646) 583 2403
>>>
>>>
>>>> On 3 Jun 2017, at 05:07, lawrence@lawrencesmith.com wrote:
>>>>
>>>> All,
>>>>
>>>> Assuming a single class, I want to a call a method and use an inline call to a private method as a parameter value. I can successfully use a public method as the parameter (e.g. do method callMe($cinst.$someMethod)) but I don’t really want to make $someMethod part of the public API. I want to make the call the equivalent of: do method callMe(do method someMethod). I realize I could pass the private method name as text and then perform a do method [passedValue] inside the receiving method but the calling syntax is less expressive that way, more prone to typos, and doesn’t pass my personal ‘this is clearly a hack’ test. There are certainly times when passing the method name as text is an appropriate solution (delayed execution etc) but in this case not so much.
>>>>
>>>> Any thoughts?
>>>>
>>>> Lawrence
>>>> _____________________________________________________________
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>>>
>>>
>>>
>>>
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