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Java Enum Methods - return opposite direction enum
...ically correct, i.e, enums cannot be instantiated, but it illustrates my point). Is this possible in Java?
6 Answers
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What is the difference between “instantiated” and “initialized”?
...les in C# are in 1 of 2 groups. Value types or Reference types. Types like int and DateTime are value types. In contrast, any class you create is a reference type. C# strings are also a reference type. Most things in the .NET framework are reference types.
Parts of a Variable
There is the variable...
iPhone: Detecting user inactivity/idle time since last screen touch
...idleTimer release];
}
idleTimer = [[NSTimer scheduledTimerWithTimeInterval:maxIdleTime target:self selector:@selector(idleTimerExceeded) userInfo:nil repeats:NO] retain];
}
- (void)idleTimerExceeded {
NSLog(@"idle time exceeded");
}
where maxIdleTime and idleTimer are instance variab...
Scala downwards or decreasing for loop?
...
@Felix: You're welcome. I should have also pointed out that there is also until that you can use in place of to to exclude the right-hand end-point from the range. The left-hand endpoint is always included.
– Randall Schulz
Apr 13 ...
How to limit the amount of concurrent async I/O operations?
...ons of async for .NET, using .NET 4.5 Beta. The previous post from 'usr' points to a good article written by Stephen Toub, but the less announced news is that the async semaphore actually made it into the Beta release of .NET 4.5
If you look at our beloved SemaphoreSlim class (which you should be u...
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@James: I wouldn't think so. Comparison<T> returns int, not bool.
– Jon Skeet
Oct 9 '08 at 16:59
2
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Is it safe to remove selected keys from map within a range loop?
... but rather some custom type that implements the func (a T) expired() bool interface. For purposes of this example, you could try: m := make(map[int]int) /* populate m here somehow */ for key := range (m) { if key % 2 == 0 { /* this is just some condition, such as calling expired */ delete(m, key);...
Java synchronized method lock on object, or method?
...ce they're primitives you can't do this.
I would suggest you to use AtomicInteger instead:
import java.util.concurrent.atomic.AtomicInteger;
class X {
AtomicInteger a;
AtomicInteger b;
public void addA(){
a.incrementAndGet();
}
public void addB(){
b.increme...
How to do a FULL OUTER JOIN in MySQL?
... syntax. According to MySql's outer join simplification, the right join is converted to the equivalent left join by switching the t1 and t2 in the FROM and ON clause in the query. Thus, the MySql Query Optimizer translates the original query into the following -
SELECT * FROM t1
LEFT JOIN t2 ON t1...
How to delete large data of table in SQL without log?
... dropping this table you can get these relatively small amount of the rows into another table drop this table and create another table with same schema and import these rows back into this ex-Large table.
One last option I can think of is to change your database's Recovery Mode to SIMPLE and then de...