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Scatterplot with too many points

...;- data.frame(x = rnorm(5000),y=rnorm(5000)) ggplot(df,aes(x=x,y=y)) + geom_point(alpha = 0.3) Another convenient way to deal with this is (and probably more appropriate for the number of points you have) is hexagonal binning: ggplot(df,aes(x=x,y=y)) + stat_binhex() And there is also regula...
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Set focus on TextBox in WPF from view model

... force it to false and then true. public bool IsFocused { get { return _isFocused; } set { if (_isFocused == value) { _isFocused = false; OnPropertyChanged(); } _isFocused = value; OnPropertyChanged(); } } ...
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Collection was modified; enumeration operation may not execute

... Is that a complete example? I have a class (_dictionary obj below) that contains a generic Dictionary<string,int> named MarkerFrequencies, but doing this didn't instantly solve the crash: lock (_dictionary.MarkerFrequencies) { foreach (KeyValuePair<string, int...
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How to sign an android apk file

... Did you read the manual? -alias <alias_name> An alias for the key. Only the first 8 characters of the alias are used. It's just an alias. A name, if you will. i'd suggest "firstkey" :-) – Nanne Jan 31 '11 at 16:29 ...
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LINQ to SQL Left Outer Join

... Public Sub LinqToSqlJoin07() Dim q = From e In db.Employees _ Group Join o In db.Orders On e Equals o.Employee Into ords = Group _ From o In ords.DefaultIfEmpty _ Select New With {e.FirstName, e.LastName, .Order = o} ObjectDumper.Write(q) End Sub Check http:...
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Namespace and class with the same name?

...hile some of stack users looks for "what to do". Would anyone recommend Ant_222 answer? – fantastory Nov 20 '14 at 14:18 3 ...
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Can I change multiplier property for NSLayoutConstraint?

...them, since "Activating or deactivating the constraint calls addConstraint(_:) and removeConstraint(_:) on the view that is the closest common ancestor of the items managed by this constraint". – qix Jan 4 '17 at 5:26 ...
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Multiple aggregations of the same column using pandas GroupBy.agg()

... @sparc_spread Passing multiple functions as a list is well described in the pandas documentation. Renaming and passing multiple functions as a dictionary will be deprecated in a future version of pandas. Details are in the 0.20 cha...
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How to safely call an async method in C# without await

...it completes, then you can do this: public string GetStringData() { var _ = MyAsyncMethod(); return "hello world"; } BTW, this is not a "common problem". It's very rare to want to execute some code and not care whether it completes and not care whether it completes successfully. Update: Sin...
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What do ellipsis […] mean in a list?

... For me, instead of "..." it shows "<Recursion on dict with id=___>" – Solomon Ucko Apr 17 '16 at 23:30 ...