protected virtual void UpdateDynamicSampler()
{
for (int f = 0; f < NumFactors; f++)
{
_factorBasedRank[f] = AllItems.OrderByDescending(iId => item_factors[ItemsMap.ToInternalID(iId), f]).ToList();
_itemFactorsStdev[f] = AllItems.Select(iId => item_factors[ItemsMap.ToInternalID(iId), f]).Stdev();
}
}
public async Task <bool> CreateSubjectPost(ITeacherSubjectRepository teacherSubject, SubjectModel model)
{
Subject subject = new Subject {
Name = model.Name
};
if (!await AddItemAsync(subject))
{
return(false);
}
Subject subjectId = await AllItems.OrderByDescending(z => z.Id).FirstOrDefaultAsync();
return(await teacherSubject.SaveCreateSubject(Int32.Parse(model.TeacherId), subjectId.Id));
}
public async Task <bool> AddImageMenuItem(string path, IFormFileCollection files)
{
var menuItem = await AllItems.OrderByDescending(x => x.Id).FirstOrDefaultAsync();
if (files.Count > 0)
{
var uploades = Path.Combine(path, "images");
var extension = Path.GetExtension(files[0].FileName);
using (var fileStream = new FileStream(Path.Combine(uploades, menuItem.Id + extension), FileMode.Create))
{
await files[0].CopyToAsync(fileStream);
}
menuItem.Image = @"\images\" + menuItem.Id + extension;
}
else
{
var uploades = Path.Combine(path, @"images\" + SD.DefaultFoodImg);
File.Copy(uploades, path + @"\images\" + menuItem.Id + ".png");
menuItem.Image = @"\images\" + menuItem.Id + ".png";
}
return(await UpdateItem(menuItem));
}
private async Task FilterAndSort(string?text, CancellationTokenSource tokenSource, CancellationToken cancellationToken)
{
while (currentToken != null)
{
await Task.Run(() => Thread.Sleep(50)).ConfigureAwait(true);
currentToken = tokenSource;
}
var lower = text?.ToLower();
// filtering on a separate thread, so that UI doesn't lag
await Task.Run(() =>
{
visibleCount = 0;
foreach (var item in AllItems)
{
if (string.IsNullOrEmpty(lower))
{
item.Score = 100;
}
else if (item.Name.ToLower() == lower)
{
item.Score = 101;
}
else
{
int indexOf = item.SearchName.IndexOf(lower, StringComparison.Ordinal);
bool contains = indexOf != -1;
bool isFullWorld = false;
if (contains)
{
isFullWorld = true;
if (indexOf > 0 && item.SearchName[indexOf - 1] != ' ')
{
isFullWorld = false;
}
indexOf += lower.Length;
if (indexOf < item.SearchName.Length && item.SearchName[indexOf] != ' ')
{
isFullWorld = false;
}
}
var score = FuzzySharp.Fuzz.WeightedRatio(item.SearchName, lower);
item.Score = contains ? (Math.Max(score, isFullWorld ? 85 : 62)) : score;
}
if (item.ShowItem)
{
visibleCount++;
}
else if (item == SelectedItem)
{
SelectedItem = null;
}
if (cancellationToken.IsCancellationRequested)
{
currentToken = null;
return;
}
}
}, cancellationToken).ConfigureAwait(true);
if (cancellationToken.IsCancellationRequested)
{
currentToken = null;
return;
}
var filtered = AllItems.OrderByDescending(f => string.IsNullOrEmpty(lower) ? -f.Order : f.Score).ToList();
Items.OverrideWith(filtered);
SelectedItem ??= Items.FirstOrDefault();
currentToken = null;
}
