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What is 'Context' on Android?
.... the Context, and the execStartActivity makes use of this context.
A 30,000 overview is this: the Instrumentation class keeps tracks of a list of Activities that it’s monitoring in order to do its work. This list is used to coordinate all of the activities and make sure everything runs smoothly...
What is polymorphism, what is it for, and how is it used?
...c are instantiated.
petraeus.Advise(); // # Petraeus says send 100,000 troops to Fallujah
condolezza.Advise(); // # she says negotiate trade deal with Iran
healthOfficials.Advise(); // # they say we need to spend $50 billion on ObamaCare
}
}
This approach allows the pre...
How does data binding work in AngularJS?
...onsidered as "instant".
Limited — You can't really show more than about 2000 pieces of information to a human on a single page. Anything more than that is really bad UI, and humans can't process this anyway.
So the real question is this: How many comparisons can you do on a browser in 50 ms? Th...
CROSS JOIN vs INNER JOIN in SQL
...the rows, if you have 100 rows in each table with 1 to 1 match, you get 10.000 results, Innerjoin will only return 100 rows in the same situation.
These 2 examples will return the same result:
Cross join
select * from table1 cross join table2 where table1.id = table2.fk_id
Inner join
select * ...
JSP tricks to make templating easier?
...
+40million. Thank you for explaining it 50,000 times better than any crappy tutorial I've found. Coming from the Rails world and missing ERB, this is exactly what I need. You should write a blog.
– cbmeeks
Apr 8 '11 at 13:35
...
Ruby on Rails Server options [closed]
...Passenger is currently the most popular Ruby app server, powering over 150,000 websites, including large ones such as New York Times, Pixar, Airbnb, etc.
Phusion Passenger vs other app servers
Phusion Passenger provides a lot more features and provides many advantages over other app servers, such ...
What do 'statically linked' and 'dynamically linked' mean?
...sn't know the memory address of printf. So the compiler just writes CALL 0x0000, and adds a note to the object file saying "must replace this 0x0000 with the memory location of printf".
Static linkage means that the linker program (the GNU one is called ld) adds printf's machine code directly to yo...
Can I split an already split hunk with git?
...ight=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.14...
Algorithm to compare two images
...matches are known beforehand. If for example in your test data you have 1,000 images where 5% of them match, you now have a reasonably reliable benchmark. An algorithm that finds 10% positives is not as good as one that finds 4% of positives in our test data. However, one algorithm may find all t...
Good way of getting the user's location in Android
...nally require updates at -at least- the desired rate
long minTimeMillis = 600000; // 600,000 milliseconds make 10 minutes
locationManager.requestLocationUpdates(myProvider,minTimeMillis,0,locationListener);
Read the documentation for requestLocationUpdates for more details on how the arguments ar...