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MySQL: determine which database is selected?
After calling mysql_select_db to grab a database, is there any way to later output the name of the database that is currently selected? This seems very basic but I couldn't find anything on php.net or stackoverflow (all results are for "no database selected").
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In Django, how do I check if a user is in a certain group?
...p
group = Group(name = "Editor")
group.save() # save this new group for this example
user = User.objects.get(pk = 1) # assuming, there is one initial user
user.groups.add(group) # user is now in the "Editor" group
then user.groups.all() returns [<Group: Editor>]...
When to use NSInteger vs. int
...ome reason want the largest possible integer type, which on 32 bit systems is just an int, while on a 64-bit system it's a long.
I'd stick with using NSInteger instead of int/long unless you specifically require them.
NSInteger/NSUInteger are defined as *dynamic typedef*s to one of these types, a...
Unit test, NUnit or Visual studio?
I'm using Visual studio (sometimes resharper) to run my unit test.
10 Answers
10
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Should IBOutlets be strong or weak under ARC?
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The current recommended best practice from Apple is for IBOutlets to be strong unless weak is specifically needed to avoid a retain cycle. As Johannes mentioned above, this was commented on in the "Implementing UI Designs in Interface Builder" session from WWDC 2015 where a...
SQL query return data from multiple tables
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Part 1 - Joins and Unions
This answer covers:
Part 1
Joining two or more tables using an inner join (See the wikipedia entry for additional info)
How to use a union query
Left and Right Outer Joins (this stackOverflow answer is excellent to describe...
Difference between Mock / Stub / Spy in Spock test framework
...ng paragraphs. For more detailed info see Martin Fowler's website.
A mock is a dummy class replacing a real one, returning something like null or 0 for each method call. You use a mock if you need a dummy instance of a complex class which would otherwise use external resources like network connecti...
How do I syntax check a Bash script without running it?
Is it possible to check a bash script syntax without executing it?
8 Answers
8
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Resetting a multi-stage form with jQuery
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updated on March 2012.
So, two years after I originally answered this question I come back to see that it has pretty much turned into a big mess. I feel it's about time I come back to it and make my answer truly correct since it is the most upvoted + accepted.
For the record, Titi's answer i...
Why isn't vector a STL container?
...al bool would (implementing a kind of "dynamic bitset"). In exchange for this optimization it doesn't offer all the capabilities and interface of a normal standard container.
In this case, since you can't take the address of a bit within a byte, things such as operator[] can't return a bool& bu...