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Find method references in Xcode
...top-left of the Editor. (It's the button immediately to the left of the back button).
Go to the "Callers" submenu for a list of all methods that call the selected method, and click any of them to jump to that file and method.
In pictures...
A couple of notes:
You can do this for properties ...
Null coalescing in powershell
...forms.
You might also consider wrapping it in a very simple function to make things more readable:
function Coalesce($a, $b) { if ($a -ne $null) { $a } else { $b } }
$s = Coalesce $myval "new value"
or possibly as, IfNull:
function IfNull($a, $b, $c) { if ($a -eq $null) { $b } else { $c } }
$...
Count with IF condition in MySQL query
... Or even SUM(ccc_news_comments.id = 'approved') as a MySQL-specific trick
– mojuba
Jan 21 '13 at 20:44
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In Objective-C why should I check if self = [super init] is not nil?
...r when a problem occurs, and because of this it's standard practice to check for nil pretty much all the time, for consistency's sake.
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Difference between ActionBarSherlock and ActionBar Compatibility
What is the difference between ActionBarSherlock and Action Bar Compatibility
7 Answers
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Python try…except comma vs 'as' in except
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Find rows with multiple duplicate fields with Active Record, Rails & Postgres
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Tested & Working Version
User.select(:first,:email).group(:first,:email).having("count(*) > 1")
Also, this is a little unrelated but handy. If you want to see how times each combination was found, put .size at the end:
User.select...
How do I deep copy a DateTime object?
... $date1 and $date2 contain the same date -- three years from now. I'd like to create two separate datetimes, one which is parsed from a string and one with three years added to it. Currently I've hacked it up like this:
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Passing data to a bootstrap modal
I've got a couple of hyperlinks that each have an ID attached. When I click on this link, I want to open a modal ( http://twitter.github.com/bootstrap/javascript.html#modals ), and pass this ID to the modal. I searched on google, but I couldn't find anything that could help me.
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How do I get the user agent with Flask?
I'm trying to get access to the user agent with Flask, but I either can't find the documentation on it, or it doesn't tell me.
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