[Interest] JS numbers to qint64
Shantanu Tushar
shaan7in at gmail.com
Wed Jul 12 12:11:14 CEST 2017
Hi
On Wed, Jul 12, 2017 at 3:30 PM, Konrad Rosenbaum <konrad at silmor.de> wrote:
> On Wed, July 12, 2017 11:53, Shantanu Tushar wrote:
> > and I see this output-
> >
> > qml: Opening 5762702576189441
> > Opening 5762702576189442
> >
> > As you can see the number changes. What am I doing wrong?
>
> ...you are using JavaScript numbers. All numbers is JS are 32bit floats,
> so naturally when you get to high numerical values you lose precision.
>
What is interesting is that I had declared the variable like this-
property var userId: 5762702576189441
And console.log prints the right value. Shouldn't that be wrong as well?
Unless the numerical value is somehow important to the user: try to wrap
> those numbers in something more opaque.
>
Any suggestions on what that can be? I tried QVariant instead of qint64 but
that didn't help, its still the wrong value.
>
> Konrad
>
>
Cheers,
--
Shantanu Tushar (UTC +0530)
shantanu.io
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