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SQLite Concurrent Access
...ize contention. Especially SQLite 3.
For most desktop/laptop/tablet/phone applications, SQLite is fast enough as there's not enough concurrency. (Firefox uses SQLite extensively for bookmarks, history, etc.)
For server applications, somebody some time ago said that anything less than 100K page vie...
CSS Progress Circle [closed]
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Large performance hit though.. making it unusable for my app =[
– Hobbes
Aug 20 '14 at 21:25
2
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Creation timestamp and last update timestamp with Hibernate and MySQL
...ava.util.Date;
import javax.persistence.Column;
import javax.persistence.MappedSuperclass;
import javax.persistence.PrePersist;
import javax.persistence.PreUpdate;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
@MappedSuperclass
public abstract class AbstractTimestampEnt...
How to make Java honor the DNS Caching Timeout?
...closest to the server with least load. For the load-balancing to work, the application server needs to honor the TTL from DNS response and to resolve the domain name again when cache times out. However, I couldn't figure out a way to do this in Java.
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Split list into multiple lists with fixed number of elements
... splitInner(Nil, xs, n).reverse
}
}
object ListSplitterTest extends App {
val res = ListSplitter.split(List(1,2,3,4,5,6,7), 2)
println(res)
}
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Join vs. sub-query
... to distinguish the two. (also the 'very rare' really depends on your data/app).
– Unreason
May 28 '10 at 9:48
21
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ios Upload Image and Text using HTTP POST
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Here's code from my app to post an image to our web server:
// Dictionary that holds post parameters. You can set your post parameters that your server accepts or programmed to accept.
NSMutableDictionary* _params = [[NSMutableDictionary alloc]...
What is tail recursion?
... stack frame any more. This allows for some optimization. In fact, with an appropriately written compiler, you should never have a stack overflow snicker with a tail recursive call. Simply reuse the current stack frame for the next recursive step. I'm pretty sure Lisp does this.
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What is a StackOverflowError?
...ogramming, it's possible to generate indirect recursion. For example, your app may be handling paint messages, and, whilst processing them, it may call a function that causes the system to send another paint message. Here you've not explicitly called yourself, but the OS/VM has done it for you.
To ...
Struct like objects in Java
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It appears that many Java people are not familiar with the Sun Java Coding Guidelines
which say it is quite appropriate to use public instance variable when the class is
essentially a "Struct", if Java supported "struct" (when ...