Troubles with inequality

Peter Haworth pete at lcsql.com
Thu Feb 5 13:01:11 EST 2015


It's almost like there should be a cast() function to change the type of a
variable, although that would be most unLivecodeLike.

Pete
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On Wed, Feb 4, 2015 at 3:20 PM, J. Landman Gay <jacque at hyperactivesw.com>
wrote:

> It's obscure, yes, though the dictionary has this:
>
> "Important! Changing the numberFormat does not automatically change the
> format of a number that's already in a container. It affects numbers only
> when they are calculated and then displayed or used as strings. Otherwise,
> the number retains its full numeric precision."
>
> The "already in a container" should be more precise though and specify "in
> a variable". Fields are containers, but they only hold strings.
>
>
> On 2/4/2015 5:02 PM, Graham Samuel wrote:
>
>> Thanks Jacque, a gold mine of information as usual. But it’s pretty
>> obscure, isn’t it? All this started for me because I wanted to test if two
>> numbers were equal, knowing that they probably weren’t exactly equal to the
>> last decimal place but nevertheless were ‘engineering equal’ as it were -
>> say to six places of decimals. So I tried to truncate them to that length
>> and then compare them. More fool me. But now I think I know what should be
>> done, thanks to you - and to everyone else who replied.
>>
>> Graham
>>
>>
>>  On 4 Feb 2015, at 23:44, J. Landman Gay <jacque at hyperactivesw.com>
>>> wrote:
>>>
>>> On 2/4/2015 3:01 PM, Graham Samuel wrote:
>>>
>>>> So really, if I want an uncomplicated string of characters derived
>>>> from a number via setting the numberFormat and then doing a
>>>> calculation, how do I get it?
>>>>
>>>
>>> You can turn it into a string by putting empty after it:
>>>
>>>   put 1.55555 into tVar -- number
>>>   set the numberformat to "0.00"
>>>   add 1 to tVar -- still a number
>>>   put tVar into fld 1 -- numberformat applied now, field contains a
>>> string "2.55"
>>>   add 1 to tVar -- still a number, contains 3.55555
>>>   put empty after tVar -- numberformat applies, tVar is a string
>>>
>>> --
>>> Jacqueline Landman Gay         |     jacque at hyperactivesw.com
>>> HyperActive Software           |     http://www.hyperactivesw.com
>>>
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>>
>>
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>
> --
> Jacqueline Landman Gay         |     jacque at hyperactivesw.com
> HyperActive Software           |     http://www.hyperactivesw.com
>
>
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