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Create singleton using GCD's dispatch_once in Objective-C
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How is the init not available? Isn't it at least available for one init?
– Honey
Apr 8 '16 at 22:27
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PostgreSQL query to return results as a comma separated list
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Note that for me at least, string_agg didn't like taking an int for its first argument so I did something like: string_agg(CAST(id as varchar), ',') instead.
– JZC
Jun 22 '15 at 17:24
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What's the difference between an id and a class?
...ave the same student ID card. However, many students can and will share at least one Class with each other.
It's okay to put multiple students under one Class title, such as Biology. But it's never acceptable to put multiple students under one student ID.
When giving Rules over the school intercom...
Defining a percentage width for a LinearLayout? [duplicate]
... for me: the inner LinearLayout takes up the whole width of the screen (at least in Layout Editor preview). Did you mean for the inner LinearLayout to have android:layout_width="0dp"? That's what the documentation indicates (developer.android.com/guide/topics/ui/layout/linear.html#Weight), and it wo...
Where can I get Google developer key
...rris pointed out in his answer, it looks like Google changed their GUI at least once more since I posted my answer 4 years ago...
– John Slegers
May 18 '17 at 20:38
add a com...
Ruby on Rails generates model field:type - what are the options for field:type?
... product title:string description:text image_url:string price:decimal
At least it was a problem to me.
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How to search by key=>value in a multidimensional array in PHP
...them (I always extend ArrayObject to include a search function at the very least).
$arrayObj->uasort("myComp");
Once they are sorted (uasort is O(n log n), which is as good as it gets over arbitrary data), binary search can do the operation in O(log n) time, ie a million entries only takes ~2...
How to execute a raw update sql with dynamic binding in rails
...e#send method to invoke the sanitize_sql_for_assignment makes the Ruby (at least the 1.8.7 version) skip the fact that the sanitize_sql_for_assignment is actually a protected method.
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Build an iOS app without owning a mac? [closed]
...rtificate on mac machine and install into XCode using Keychain tool
Get at least one iOS Device
Register you device on your apple account
Now you can develop iOS app, test on Real Device and also publish on iTunes Store
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How to get values from IGrouping
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I don't think so, at least for now.
– snr
Apr 19 at 21:27
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