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Explanation of strong and weak storage in iOS5
... all remaining weak pointers will be zeroed out.
Perhaps an example is in order.
Imagine our object is a dog, and that the dog wants to run away (be deallocated).
Strong pointers are like a leash on the dog. As long as you have the leash attached to the dog, the dog will not run away. If five peo...
How can I calculate the number of lines changed between two commits in git?
...han what he mentions. Since git log internally calls the diff machinery in order to print requested information, you can give it any of the diff stat options - not just --shortstat. What you likely want to use is:
git log --author="Your name" --stat <commit1>..<commit2>
but you can us...
How is it possible to declare nothing inside main() in C++ and yet have a working application after
... ignore has to be initialized before entering into main() function. Now in order to initialize the global, print_fibs() needs to be executed where you can do anything — in this case, compute fibonacci numbers and print them! A similar thing I've shown in the following question (which I had asked l...
How do I change the IntelliJ IDEA default JDK?
...y management. I frequently build my project structure (directories, poms, etc) outside of IDEA and then import the project into IDEA using Import project from external model . This works great, except that in my poms I specify that the maven-compiler-plugin should use JDK 1.6, and when I import, ...
Non-recursive depth first search algorithm
... languages. pop() also works, and returns the child nodes in right-to-left order instead of left-to-right.
– Ariel
Jun 21 '11 at 3:57
5
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HTML table with 100% width, with vertical scroll inside tbody [duplicate]
...
In order to make <tbody> element scrollable, we need to change the way it's displayed on the page i.e. using display: block; to display that as a block level element.
Since we change the display property of tbody, we shou...
Run all SQL files in a directory
I have a number of .sql files which I have to run in order to apply changes made by other developers on an SQL Server 2005 database.
The files are named according to the following pattern:
...
Differences between C++ string == and compare()?
...to one another" -- although idiomatic C++ for this is to use a strict weak order (like std::less, which is also a total order in this case) rather than a three-way comparator. compare() is for operations modeled on std::qsort and std::bsearch, as opposed to those modeled on std:sort and std::lower_b...
How do I declare a 2d array in C++ using new?
... Shouldn't it be i*sizeX+j? If I recall correctly, with row major ordering it should be row*numColumns+col.
– arao6
Oct 4 '15 at 20:29
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Why is iterating through a large Django QuerySet consuming massive amounts of memory?
...etching large items from database.
import gc
# Get the events in reverse order
eids = Event.objects.order_by("-id").values_list("id", flat=True)
for index, eid in enumerate(eids):
event = Event.object.get(id=eid)
# do necessary work with event
if index % 100 == 0:
gc.collect()
...