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Do I need quotes for strings in YAML?
...tors) can be used without quotes (as long as a reserved indicator doesn't start a plain scalar), but it's not wrong to use quotes whenever you see a special character.
– Mark Berry
Aug 2 '15 at 2:03
...
Download a file with Android, and showing the progress in a ProgressDialog
...nload");
intent.putExtra("receiver", new DownloadReceiver(new Handler()));
startService(intent);
Here is were ResultReceiver comes to play:
private class DownloadReceiver extends ResultReceiver{
public DownloadReceiver(Handler handler) {
super(handler);
}
@Override
prote...
“The run destination iOS Device is not valid for running the scheme”
...
It was a bug in XCode, I closed and reopened Xcode and it started working.
I've noticed this sort of thing many many times now with Xcode with other problems, its very frustrating that the tool is so dodgy.
...
When to use LinkedList over ArrayList in Java?
...rable in many more use-cases than LinkedList. If you're not sure — just start with ArrayList.
LinkedList and ArrayList are two different implementations of the List interface. LinkedList implements it with a doubly-linked list. ArrayList implements it with a dynamically re-sizing array.
As wi...
Default constructor vs. inline field initialization
...favored.
More elaborated examples to illustrate
Study case 1
I will start from a simple Car class that I will update to illustrate these points.
Car declare 4 fields and some constructors that have relation between them.
1.Giving a default value in field intializers for all fields is und...
Why are floating point numbers inaccurate?
...pt that binary only has two digits: 0 and 1. So the binary mantissa always starts with 1! When a float is stored, the 1 at the front of the binary mantissa is omitted to save space; we have to place it back at the front of our third element to get the true mantissa:
1.001001100110011001100110011...
Append lines to a file using a StreamWriter
...
what if the file has 10mb and I start writing from position 0, but only 10kb, how can I assure that the file only contains the 10kb data I've just written?
– JobaDiniz
Oct 11 '17 at 17:58
...
Algorithm to generate a crossword
...ips) and a board database (with pre-configured boards).
1) Search for all starting cells (the ones with an arrow), store their size and directions
2) Loop through all starting cells
2.1) Search a word
2.1.1) Check if it was not already used
2.1.2) Check if it fits
2.2) Add the word to the board
3) ...
Subqueries vs joins
...es) the tuples can't be pruned out of the result set until the outer query starts to run.
With out seeing the the query its hard to say what was so bad about the original, but my guess would be it was something that the optimizer just couldn't make much better. Running 'explain' will show you th...
How do I find where an exception was thrown in C++?
...gact;
sigact.sa_sigaction = crit_err_hdlr;
sigact.sa_flags = SA_RESTART | SA_SIGINFO;
if (sigaction(SIGABRT, &sigact, (struct sigaction *)NULL) != 0) {
std::cerr << "error setting handler for signal " << SIGABRT
<< " (" << strsigna...