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What is the difference between include and require in Ruby?
...y inheritance. class C; include M end makes M the superclass of C and the (former) superclass of C the superclass of M. I don't think that C's include works via inheritance, I think it is simple textual/lexical substitution.
– Jörg W Mittag
May 21 '17 at 8:08...
.Net picking wrong referenced assembly version
... You solved a related problem for me - thanks! An inherited form in my C# application wouldn't open in the designer because it was looking for an old version of a reference. Turns out another reference had originally been built while referencing that old version of the problem refere...
“Comparison method violates its general contract!”
...consistent value when comparing objects. For example, you might want to perform a string compare and force empty strings to sort to the end with:
if ( one.length() == 0 ) {
return 1; // empty string sorts last
}
if ( two.length() == 0 ) {
return -1; // emp...
Differences between INDEX, PRIMARY, UNIQUE, FULLTEXT in MySQL?
...allow them to be looked up more efficiently.
fulltext: a more specialized form of indexing that allows full text search. Think of it as (essentially) creating an "index" for each "word" in the specified column.
share
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Iterate two Lists or Arrays with one ForEach statement in C#
...
You can use Union or Concat, the former removes duplicates, the later doesn't
foreach (var item in List1.Union(List1))
{
//TODO: Real code goes here
}
foreach (var item in List1.Concat(List1))
{
//TODO: Real code goes here
}
...
What is the reason behind “non-static method cannot be referenced from a static context”? [duplicate
...stance methods are the logic, instance fields are the data. Together, they form an object.
public class Foo
{
private String foo;
public Foo(String foo){ this.foo = foo; }
public getFoo(){ return this.foo; }
public static void main(String[] args){
System.out.println( getFoo...
What is thread contention?
...ad B will have to wait until thread A releases the lock.
Now, this is platform-specific, but the thread may experience slowdowns even if it never has to wait for the other thread to release the lock! This is because a lock protects some kind of data, and the data itself will often be contended as w...
java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare();
... };
Looper.loop();
}
AsyncTask
AsyncTask allows you to perform asynchronous work on your user interface. It performs the blocking operations in a worker thread and then publishes the results on the UI thread, without requiring you to handle threads and/or handlers yourself.
public ...
How do you configure an OpenFileDialog to select folders?
...
@SoMoS, and others with the same problem: in file WindowsFormsApplication1.csproj edit line 100 so it matches your setup. In my case I had to change "9.0" to "10.0" (twice) and remove " (x86)" (twice).
– RenniePet
Jul 16 '11 at 1:41
...
Multi-line regex support in Vim
...
However, it seems that I can't perform lazy matching with this expression, even if I included it in parentheses? Is there any way to do it?
– xji
Sep 8 '16 at 18:07
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