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What is the purpose of a question mark after a type (for example: int? myVariable)?
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Thank you for the explanation. I understand now.
– problemofficer
Jul 1 '17 at 3:59
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A connection was successfully established with the server, but then an error occurred during the pre
...for root cause analysis. Work-arounds have value, but it's more useful to know why this occurs and why the work-around works.
– laindir
Aug 8 '16 at 18:23
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Ruby on Rails: how do I sort with two columns using ActiveRecord?
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Thank you @Erik - I know this answer is old so here's my warning for those seeing it now: This method has been deprecated starting Rails 3.2. Use Thing.all instead =)
– Abdo
Mar 5 '13 at 9:18
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IPC performance: Named Pipe vs Socket
...urely trying to optimize something that isn't yet problematic. Unless you know sockets are going to be a bottleneck, I'd just use them.
A lot of people who swear by named pipes find a little savings (depending on how well everything else is written), but end up with code that spends more time block...
How to use performSelector:withObject:afterDelay: with primitive types in Cocoa?
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just a side note for those who dont know, we start adding arguments from index 2 because index 0 and 1 are reserved for hidden arguments "self" and "_cmd".
– Vishal Singh
May 15 '13 at 6:20
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How to get last key in an array?
...ings when the function parameter was passed by reference. The warning will now always be issued."
– Dominic Scheirlinck
Jan 18 '16 at 1:05
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Python locale error: unsupported locale setting
...to saving readonly files.
After saving the file do:
$ source ~/.bashrc
Now you wont be facing the same problem anymore.
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UltiSnips and YouCompleteMe
...ger the snippet completion with shift-tab, but it doesn't work for some unknown reason. I could use caps as the trigger, but so far I've found no way to do that.
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Split Java String by New Line
...s unfortunate that it has so many upvotes. As @ Raekye pointed out, OS X (now known as macOS) has used \n as its line separator since it was released in 2001. Mac OS 9 was released in 1999, and I have never seen a Mac OS 9 or below machine used in production. There is not a single modern operatin...
How do I use a Boolean in Python?
Does Python actually contain a Boolean value? I know that you can do:
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