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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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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 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...
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...
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...
Creating a ZIP Archive in Memory Using System.IO.Compression
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Thanks! i just added the line of code to convert bytes to zip file
– Elnoor
Sep 20 '17 at 21:30
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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...
Set margins in a LinearLayout programmatically
...ons in Android, they take pixels. I suggest a global utility function that converts dips to px. This is what I have done in all my apps. Android API sucks.
– mxcl
Jan 26 '12 at 12:00
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Selecting/excluding sets of columns in pandas [duplicate]
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You don't really need to convert that into a set:
cols = [col for col in df.columns if col not in ['B', 'D']]
df2 = df[cols]
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