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How to maintain a Unique List in Java?
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Now I am confused, which one shall I use? I just need to have maintain a list of unique strings. So basically even when an existing string is added it should actually get added.
– user1804287
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How to select all records from one table that do not exist in another table?
...n are just null. Then you tell, ok i only want that are null. This way you now have all rows in A that didn't have a match In B
– Muhammad Umer
Mar 6 '18 at 18:02
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Explicit vs implicit SQL joins
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The first answer you gave uses what is known as ANSI join syntax, the other is valid and will work in any relational database.
I agree with grom that you should use ANSI join syntax. As they said, the main reason is for clarity. Rather than having a where clause w...
Get attribute name value of
...lve the problem. OP wants to get the name value; this assumes you already know it.
– felwithe
May 1 '15 at 22:06
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Multiple Inheritance in C#
...ile having upcasts and downcasts be identity-preserving? The solutions I know of for the problems of multiple inheritance revolve around having casts that are not identity-preserving (if myFoo is of type Foo, which inherits from Moo and Goo, both of which inherit from Boo, then (Boo)(Moo)myFoo and ...
What is the difference between using IDisposable vs a destructor in C#?
...al.
Hence IDisposable is used to deterministically clean up objects, i.e. now. It doesn't collect the object's memory (that still belongs to GC) - but is used for example to close files, database connections, etc.
There are lots of previous topics on this:
deterministic finalization
disposing ob...
How to add a touch event to a UIView?
...esture recognizer documentation. It is fairly understandable and helpful.
Known issues with my examples above: (1) Pan view resets its frame on next gesture event. (2) Swipe view comes from the wrong direction on the first swipe. (These bugs in my examples should not affect your understanding of how...
Wireshark localhost traffic capture [closed]
...1 metric 1
http://forums.whirlpool.net.au/archive/1037087, accessed just now.
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Method names for getting data [closed]
... developer used add for both writes to a database and writes to the Store. Now I'm trying to separate those out, and it is a pain.
– tim.rohrer
May 3 '19 at 13:38
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Changing all files' extensions in a folder with one command on Windows
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man ren? The question was about Windows/cmd. Do those now provide man pages? What is ren-1.0 and how can we view its man page in context?
– underscore_d
Jun 21 '16 at 15:21
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