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Are std::vector elements guaranteed to be contiguous?
...han bool, then it obeys the identity &v[n] == &v[0] + n for all 0 <= n < v.size().
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How to Set Opacity (Alpha) for View in Android
...nd 00 would be full transparent.
Dynamically
If you need to dynamically alter the opacity in your code, use
myButton.getBackground().setAlpha(128); // 50% transparent
Where the INT ranges from 0 (fully transparent) to 255 (fully opaque).
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Android-java- How to sort a list of objects by a certain value within the object
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You should use Comparable instead of a Comparator if a default sort is what your looking for.
See here, this may be of some help - When should a class be Comparable and/or Comparator?
Try this -
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
publ...
How to TryParse for Enum value?
...ch, it should return the enum instance; otherwise, it should return a default value.
14 Answers
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How can I display a list view in an Android Alert Dialog?
...auncher);
builderSingle.setTitle("Select One Name:-");
final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(DialogActivity.this, android.R.layout.select_dialog_singlechoice);
arrayAdapter.add("Hardik");
arrayAdapter.add("Archit");
arrayAdapter.add("Jignesh");
arrayAdapter....
Creating a temporary directory in Windows?
... have two applications stepping on each other's work. Is there any safer alternative in .NET?
– Chris
Aug 20 '09 at 18:31
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How to count TRUE values in a logical vector
...some problems when logical vector contains NA values.
See for example:
z <- c(TRUE, FALSE, NA)
sum(z) # gives you NA
table(z)["TRUE"] # gives you 1
length(z[z == TRUE]) # f3lix answer, gives you 2 (because NA indexing returns values)
So I think the safest is to use na.rm = TRUE:
sum(z, na.rm ...
What is the difference between cout, cerr, clog of iostream header in c++? When to use which one?
...e different streams, even though they both refer to console output by default. Redirecting (piping) one of them (e.g. program.exe >out.txt) would not affect the other.
Generally, stdout should be used for actual program output, while all information and error messages should be printed to stderr...
Separate Back Stack for each tab in Android using Fragments
...this seems like a really questionable thing to do. I can't imagine it resulting in a decent UI -- if the back key is going to do different things depending on the tab I am, especially if the back key also has its normal behavior of closing the entire activity when at the top of the stack... sounds...
Why do people say there is modulo bias when using a random number generator?
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Yuck :-P converting to a double, then multiplying by MAX_UPPER_LIMIT/RAND_MAX is much cleaner and performs better.
– boycy
Jun 13 '12 at 7:59
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