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Reflecting parameter name: abuse of C# lambda expressions or syntax brilliance?
...# - F# example
C#:
public class Class1
{
public static void Foo(Func<object, string> f)
{
Console.WriteLine(f.Method.GetParameters()[0].Name);
}
}
F#:
Class1.Foo(fun yadda -> "hello")
Result:
"arg" is printed (not "yadda").
As a result, library designers should ...
How to dynamically update a ListView on Android [closed]
On Android, how can I a ListView that filters based on user input, where the items shown are updated dynamically based on the TextView value?
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Java: how to convert HashMap to array
I need to convert a HashMap<String, Object> to an array; could anyone show me how it's done?
12 Answers
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Shards and replicas in Elasticsearch
... I didn't manage to understand it. If I download Elasticsearch and run the script, then from what I know I have started a cluster with a single node. Now this node (my PC) have 5 shards (?) and some replicas (?).
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Graph Algorithm To Find All Connections Between Two Arbitrary Vertices
...java.util.Map;
import java.util.Set;
public class Graph {
private Map<String, LinkedHashSet<String>> map = new HashMap();
public void addEdge(String node1, String node2) {
LinkedHashSet<String> adjacent = map.get(node1);
if(adjacent==null) {
ad...
When to use IComparable Vs. IComparer
...
Well they are not quite the same thing as IComparer<T> is implemented on a type that is capable of comparing two different objects while IComparable<T> is implemented on types that are able to compare themselves with other instances of the same type.
I tend to use...
How do I create ColorStateList programmatically?
...led. Better to put "enabled" last. (Or instead of "enabled", an empty/default item last.)
– ToolmakerSteve
Dec 16 '16 at 21:04
2
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In c# what does 'where T : class' mean?
...re T : struct // T must be a struct
where T : new() // T must have a default parameterless constructor
where T : IComparable // T must implement the IComparable interface
For more information, check out MSDN's page on the where clause, or generic parameter constraints.
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Smooth GPS data
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Here's a simple Kalman filter that could be used for exactly this situation. It came from some work I did on Android devices.
General Kalman filter theory is all about estimates for vectors, with the accuracy of the estimates represented by covaria...
How do I convert a string to enum in TypeScript?
...ype implicitly has an 'any' type. For me this worked: var color: Color = (<any>Color)[green]; (tested with version 1.4)
– Vojta
Mar 13 '15 at 19:31
3
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