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How to determine if a type implements an interface with C# reflection
... in C# offer a way to determine if some given System.Type type models some interface?
15 Answers
...
How to find all occurrences of a substring?
...find-all without overlaps, you can combine positive and negative lookahead into an expression like this:
search = 'tt'
[m.start() for m in re.finditer('(?=%s)(?!.{1,%d}%s)' % (search, len(search)-1, search), 'ttt')]
#[1]
re.finditer returns a generator, so you could change the [] in the above to ...
How to implement a good __hash__ function in python [duplicate]
...f an object that already belongs to, e.g., a set wreaks havoc on the set's internal data structures.
– javawizard
Sep 5 '13 at 22:03
...
getting type T from IEnumerable
...>();
Console.WriteLine(strings.GetType().GetGenericArguments()[0]);
prints System.String.
See MSDN for Type.GetGenericArguments.
Edit: I believe this will address the concerns in the comments:
// returns an enumeration of T where o : IEnumerable<T>
public IEnumerable<Type> GetGen...
Opening a folder in explorer and selecting a file
... edited Jul 26 '17 at 22:30
Winter
2,83566 gold badges1919 silver badges4747 bronze badges
answered Mar 30 '09 at 6:09
...
Pandas groupby: How to get a union of strings
...0.866521 string
5 2 0.120737 !
In [6]: df.dtypes
Out[6]:
A int64
B float64
C object
dtype: object
When you apply your own function, there is not automatic exclusions of non-numeric columns. This is slower, though, than the application of .sum() to the groupby
In [8]: df.gro...
HTML5: number input type that takes only integers?
...e thing. In the HTML5 specification, the input type "number" can have both integers and floating-point numbers. This seems incredibly short-sighted since it will only be a useful validator when your database fields are signed floating-point numbers (for unsigned ints you'll have to fall back to "pat...
Is String.Contains() faster than String.IndexOf()?
...r. But really the speed differences we're talking about are minute - the point is one calls the other, and Contains is more readable if you don't need the index. In other words don't worry about it.
– Chris S
Nov 15 '15 at 18:17
...
Upload file to FTP using C#
...m = request.GetRequestStream())
{
byte[] buffer = new byte[10240];
int read;
while ((read = fileStream.Read(buffer, 0, buffer.Length)) > 0)
{
ftpStream.Write(buffer, 0, read);
Console.WriteLine("Uploaded {0} bytes", fileStream.Position);
}
}
For GUI progress...
What is the simplest way to get indented XML with line breaks from XmlDocument?
...
Based on the other answers, I looked into XmlTextWriter and came up with the following helper method:
static public string Beautify(this XmlDocument doc)
{
StringBuilder sb = new StringBuilder();
XmlWriterSettings settings = new XmlWriterSettings
{
...