[Interest] qSort replacement

[John Weeks]

Lambdas as predicates are supported in C++11, too.

> On Jul 21, 2021, at 9:22 AM, Rainer Wiesenfarth <Rainer_Wiesenfarth at trimble.com> wrote:
> 
> On Wed, Jul 21, 2021 at 6:07 PM Joshua Grauman <jnfo-d at grauman.com> wrote:
> [...] I can't figure out how to 
> use std::sort to sort a QList with a custom compare function. [...]
> bool variantLessThan(const QVariant &v1, const QVariant &v2)
> {
>     return v1.toString() < v2.toString();
> }
> 
> qSort(fieldsList.begin(), fieldsList.end(), variantLessThan);
> [...]
> 
> If you are using C++17 you may also use lambdas:
> 
> std::sort(fieldsList.begin(), fieldsList.end(), [](const QVariant &v1, const QVariant &v2) {
>     return v1.toString() < v2.toString();
> });
> 
> (untested)
> 
> Cheers, Rainer
> 
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-John Weeks