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ArrayIndexOutOfBoundsException with custom Android Adapter for multiple views in ListView
.....). in my case i tried to reuse the R.layout... for the ViewType. i guess internally the ViewType's value is being used as the index for recycling pool and not as a key.
– Samuel
May 11 '12 at 5:00
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How to properly seed random number generator
...t with the same seed many times.
In your case, as you're calling your randInt function until you have a different value, you're waiting for the time (as returned by Nano) to change.
As for all pseudo-random libraries, you have to set the seed only once, for example when initializing your program u...
What are some uses of decltype(auto)?
In c++14 the decltype(auto) idiom is introduced.
2 Answers
2
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How to change position of Toast in Android?
... centered horizontally. You can change this position with the
setGravity(int, int, int) method. This accepts three parameters: a
Gravity constant, an x-position offset, and a y-position offset.
For example, if you decide that the toast should appear in the
top-left corner, you can set the...
Is it possible to force Excel recognize UTF-8 CSV files automatically?
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I use Notepad++ to easily convert the .csv from UTF-8 to UTF-8 with BOM
– Sébastien
Jun 6 '16 at 8:02
3
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Why Choose Struct Over Class?
...perhaps encapsulating a start property and a length property, both of type Int.
A point in a 3D coordinate system, perhaps encapsulating x, y and z properties, each of type Double.
In all other cases, define a class, and create instances of that class
to be managed and passed by referenc...
“Diff” an image using ImageMagick
... approach, particularly when comparing images which are mostly grayscale:
convert '(' file1.png -flatten -grayscale Rec709Luminance ')' \
'(' file2.png -flatten -grayscale Rec709Luminance ')' \
'(' -clone 0-1 -compose darken -composite ')' \
-channel RGB -combine diff.png
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Remove blank lines with grep
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Good point about converting to UNIX-style line endings otherwise regular expressions may not work as expected. Nothing here worked for me until I converted the line endings.
– Ryan H.
Aug 31 '16 at 14:41...
Should one use < or
...thing 1-based (e.g. JDBC, IIRC) I might be tempted to use <=. So:
for (int i=0; i < count; i++) // For 0-based APIs
for (int i=1; i <= count; i++) // For 1-based APIs
I would expect the performance difference to be insignificantly small in real-world code.
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What is the Scala annotation to ensure a tail recursive function is optimized?
....
import scala.annotation.tailrec
class Factorial2 {
def factorial(n: Int): Int = {
@tailrec def factorialAcc(acc: Int, n: Int): Int = {
if (n <= 1) acc
else factorialAcc(n * acc, n - 1)
}
factorialAcc(1, n)
}
}
And it works from the REPL (example from the Scala...