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What is the right way to check for a null string in Objective-C?
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Refer to the following related articles on this site:
Is if (variable) the same as if (variable != nil) in Objective-C
h
I think your error is related to something else as you shouldn't need to do the extra checking.
Also see this related question: Proper checking of ...
Difference between Repository and Service Layer?
...ns. What this typically means for me in practice when building Asp.net MVC sites is that I have this structure
[Controller] calls [Service(s)] who calls [repository(ies)]
One principle I have found useful is to keep logic to a minimum in controllers and repositories.
In controllers it is because...
Insert space before capital letters
I have a string "MySites" . I want to place a space between My and Sites .
8 Answers
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How to take screenshot of a div with JavaScript?
...eone's Facebook page in an iframe and then screenshot it. Normally a cross-site iframe isn't part of the accessible DOM to prevent XSS, but it would be much harder for the browser vendor to stop it in this such case.
– bgw
Dec 27 '12 at 21:20
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Asserting successive calls to a mock method
... File "<stdin>", line 1, in <module>
File "[python path]\lib\site-packages\mock.py", line 891, in assert_any_call
'%s call not found' % expected_string
AssertionError: mock(4) call not found
I find doing it this way to be easier to read and understand than a large list of calls p...
When to use Tornado, when to use Twisted / Cyclone / GEvent / other [closed]
...tic design". If you are building something that is similar to a e-commerce site, then you should probably go with Django. It will get your work done quick. You dont have to worry about too many technology choices. It provides everything thing you need from template engine to ORM. It will be slightly...
GitHub relative link in Markdown file
...> tag for this, but it causes problems with other relative links on the site.
October 12th, 2011:
If you look at the raw source of the README.md of Markdown itself(!), relative paths don't seem to be supported.
You will find references like:
[r2h]: http://github.com/github/markup/tree/maste...
In HTML I can make a checkmark with ✓ . Is there a corresponding X-mark?
...a named entity exists for the character you want, try the &what search site. It includes the name for each entity, if there is one.
As mentioned in the comments, &check; and &cross; are not supported in HTML4, so you may be better off using the more cryptic &#x2713; and &#x2717;...
Turn a simple socket into an SSL socket
...wasn't reading the OpenSSL alerts exactly right, and couldn't talk to some sites.)
If you really want quick and simple, put stud in front of your program an call it a day. Having SSL in a different process won't slow you down: http://vincent.bernat.im/en/blog/2011-ssl-benchmark.html
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Do on-demand Mac OS X cloud services exist, comparable to Amazon's EC2 on-demand instances? [closed]
...eresting. I may give them a try, and will post update if I do.
Per the website, they say they offer hourly pay-as-you-go and weekly/monthly plans, plus there's a free trial.
http://www.macincloud.com
Per @Iterator, posting update on my findings for this service, moving out from my comments:
I di...