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C# LINQ find duplicates in List
...; !hash.Add(i));
If you want unique values in your duplicates list:
var myhash = new HashSet<int>();
var mylist = new List<int>(){1,1,2,2,3,3,3,4,4,4};
var duplicates = mylist.Where(item => !myhash.Add(item)).Distinct().ToList();
Here is the same solution as a generic extension m...
What does -1 mean in numpy reshape?
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In my opinion the accepted answer and this answer are both helpful, whereas the accepted answer is more simple, I prefer the simpler answer
– cloudscomputes
Aug 23 '18 at 2:34
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Generate random string/characters in JavaScript
...u, I am not saying that I invented the solution but I've been using it in my projects for years now. And it has nothing to do with the comment you mentioned. And I am quite sure that in SO what matters is the most useful information in the right place and even if it already exists in some other plac...
Is it a bad practice to use an if-statement without curly braces? [closed]
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My general pattern is that if it fits on one line, I'll do:
if(true) do_something();
If there's an else clause, or if the code I want to execute on true is of significant length, braces all the way:
if(true) {
do_some...
Why do most C developers use define instead of const? [duplicate]
...es.)
A closer equivalent to using #define is using enumerations:
enum dummy_enum {
constant_value = 10010
};
But this is restricted to integer values and doesn't have advantages of #define, so it is not widely used.
const is useful when you need to import a constant value from some library w...
Do I need all three constructors for an Android custom view?
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If you will add your custom View from xml also like :
<com.mypack.MyView
...
/>
you will need the constructor public MyView(Context context, AttributeSet attrs), otherwise you will get an Exception when Android tries to inflate your View.
If you add your View from x...
Convert a list of objects to an array of one of the object's properties
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You are looking for
MyList.Select(x=>x.Name).ToArray();
Since Select is an Extension method make sure to add that namespace by adding a
using System.Linq
to your file - then it will show up with Intellisense.
...
How do you tell Resharper that a method parameter is a string containing a CSS class?
...r.
Unfortunately, I've not figured out how it works. Maybe it's buggy in my Resharper version 9.2.
What I've tried so far:
namespace ValueProviderSample
{
public static class MyValuesContainer
{
public static readonly string[] Values = { "one", "two", "three" };
}
public...
UnicodeEncodeError: 'latin-1' codec can't encode character
...his encoding allows any character to be used. You should also ideally tell MySQL you are using UTF-8 strings (by setting the database connection and the collation on string columns), so it can get case-insensitive comparison and sorting right.
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Value of type 'T' cannot be converted to
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Wrong. This will not compile. See my answer.
– SLaks
Nov 3 '10 at 23:04
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