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Understanding reference counting with Cocoa and Objective-C
...e count is decremented. If, after calling release, the reference count is now zero, then that object's memory is freed by the system.
The basic way this differs from malloc and free is that any given object doesn't need to worry about other parts of the system crashing because you've freed memory ...
How do I preview emails in Rails?
...
Action Mailer now has a built in way of previewing emails in Rails 4.1. For example, check this out:
# located in test/mailers/previews/notifier_mailer_preview.rb
class NotifierPreview < ActionMailer::Preview
# Accessible from http:...
Check string for palindrome
... will compare word[0] and word[4]. They're equal, so we increment i1 (it's now 1) and decrement i2 (it's now 3).
So we then compare the n's. They're equal, so we increment i1 (it's now 2) and decrement i2 (it's 2).
Now i1 and i2 are equal (they're both 2), so the condition for the while loop is no l...
Espresso: Thread.sleep( );
...
Awesome, I didn't know that :thumbs_up @YairKukielka
– Hesam
May 18 '16 at 18:13
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What is the best way to filter a Java Collection?
...ill cannot believe I am collecting SO points for this answer. At any rate, now that Java 8 has introduced closures to the language, my answer would now be considerably different, and simpler. With Java 8, there is no need for a distinct static utility class. So if you want to find the 1st element th...
Rename a git submodule
...nd .gitmodules properly in 2018 versions of GIT.
Note: You may be able to now just do git mv oldpath newpath now, as pointed out in VonC's answer. (Ensure you are using the latest version of git)
share
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iPhone Simulator suddenly started running very slow
...hone simulator for a number of weeks and it has been running well up until now, but all of a sudden has begun running very slow both when loading content and animations. I have not made any changes to my code since I last tested it successfully.
...
How to empty a list in C#?
...ds 5 equal answers?):
list.Add(5);
// list contains at least one element now
list = new List<int>();
// list in "list" is empty now
Keep in mind that all other references to the old list have not been cleared (depending on the situation, this might be what you want). Also, in terms of perf...
Git error on git pull (unable to update local ref)
...te local ref, when doing a pull in SourceTree.
We used :
git gc --prune=now
This removes any duplicate reference objects which should fix the issue.
Here are a few links where you can learn more about git references and pruning :
git tip of the week
git-prune documentation
git references
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Rebasing a Git merge commit
...bout what contents will be in that merge commit, we only need nice history now.
History will looks like that (ignoring master):
* 51984c7 Merge branch 'topic' [HEAD -> correct-history]
|\
| * b62cae6 2 [topic]
* | f5a7ca8 5 [origin/master]
* | e7affb...