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What are the best practices for SQLite on Android?
...that will be it.
So, multiple threads? Use one helper. Period. If you KNOW only one thread will be writing, you MAY be able to use multiple connections, and your reads will be faster, but buyer beware. I haven't tested that much.
Here's a blog post with far more detail and an example app.
An...
What are the big improvements between guava and apache equivalent libraries?
... lot of great developers have contributed to Guava (even Joshua Bloch, who now works at Google!).
The core philosophies and design choices behind Guava are consistent across the library, and the developers adhere to very good (IMO) API design principles, having learned from past mistakes of the JDK...
Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
...ex + 1) (triangle + index + 1)
main = print $ nextTriangle 1 1
EDIT: So now that we've explored that, lets address the questions
Question 1: Do erlang, python and haskell lose speed due to using
arbitrary length integers or don't they as long as the values are less
than MAXINT?
In Haske...
How to convert an array of strings to an array of floats in numpy?
...list on the map return value if you use map, since map returns an iterator now.)
However, if it's already a numpy array of strings, there's a better way. Use astype().
import numpy as np
x = np.array(['1.1', '2.2', '3.3'])
y = x.astype(np.float)
...
How do cache lines work?
...eval process can take ~90 nanoseconds, or ~250 clock cycles (from the CPU knowing the address to the CPU receiving data).
By contrast, a hit in L1 cache has a load-use latency of 3 or 4 cycles, and a store-reload has a store-forwarding latency of 4 or 5 cycles on modern x86 CPUs. Things are simila...
eval command in Bash and its typical uses
...s put double quotes around variable and command substitutions, unless you know you need to leave them off. Without the double quotes, the shell performs field splitting (i.e. it splits value of the variable or the output from the command into separate words) and then treats each word as a wildcard p...
What does `someObject.new` do in Java?
...
@emory I'm not saying that, I know there can be perfectly valid reasons to want to make an inner class public, and return instances of the inner class from methods of the outer, but I would tend to design my code such that "outsiders" don't need to constru...
ArrayIndexOutOfBoundsException with custom Android Adapter for multiple views in ListView
...
You got 38 upvote for the answer till now so this may be a perfect answer,but please add some more text for explaining the problem and how to resolve it..cause I still cant understand much from this.
– Chirag Patel
Apr 24 '1...
Draw in Canvas by finger, Android
...ngth - 1);
int i = (int)p;
p -= i;
// now p is just the fractional part [0...1) and i is the index
int c0 = colors[i];
int c1 = colors[i+1];
int a = ave(Color.alpha(c0), Color.alpha(c1), p);
int r = ave(Color.red(c0...
Is it possible to run JavaFX applications on iOS, Android or Windows Phone 8?
...ad news first:
RoboVM is dead
Oracle killed JavaFX on Embedded Devices
Now, some good news:
JavaFX still runs on Android, iOS and most of the Embedded devices
JavaFXPorts SDK for android, iOS and embedded devices can be downloaded from here
JavaFXPorts project is still thriving and it is easie...