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cleanup: implement index_of() and index_of_if() generics

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Search the index of an item in a container. Compare by
equality or a lambda. The lack of these have annoyed me for a
long time. Return the index of the first found element or
-1 if no element found.

Currently, only supports random-access operators. Might be
trivially changed for forward iterators.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2022-10-31 19:35:15 +01:00
parent df5bf728f9
commit 691d9e86de
3 changed files with 23 additions and 19 deletions
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6
qt-models/divepicturemodel.cpp
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@ -242,10 +242,8 @@ int DivePictureModel::rowCount(const QModelIndex&) const
int DivePictureModel::findPictureId(const std::string &filename)
{
for (int i = 0; i < (int)pictures.size(); ++i)
if (pictures[i].filename == filename)
return i;
return -1;
return index_of_if(pictures, [&filename](const PictureEntry &p)
{ return p.filename == filename; });
}
static void addDurationToThumbnail(QImage &img, duration_t duration)