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How to select only 1 row from oracle sql?
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I found this "solution" hidden in one of the comments. Since I was looking it up for a while, I'd like to highlight it a bit (can't yet comment or do such stuff...), so this is what I used:
SELECT * FROM (SELECT [Column] FROM [Table] ORDER BY [Date] DESC) WH...
What is a plain English explanation of “Big O” notation?
...integers. But a comparison of two algorithms to do arithmetic operations (one multiplication, one addition) will tell you something meaningful;
representation: Big-O (in its simplest form) reduces the comparison between algorithms to a single variable. That variable is chosen based on observations...
What's “P=NP?”, and why is it such a famous question? [closed]
...e set of symbols can be written and read. At any given time, the TM is in one of its states, and it is looking at a particular cell on the tape. Depending on what it reads from that cell, it can write a new symbol into that cell, move the tape one cell forward or backward, and go into a different ...
Overloading Macro on Number of Arguments
...OO(foo,bar,baz) # expands to FOO3(foo,bar,baz)
If you want a fourth one:
#define GET_MACRO(_1,_2,_3,_4,NAME,...) NAME
#define FOO(...) GET_MACRO(__VA_ARGS__, FOO4, FOO3, FOO2)(__VA_ARGS__)
FOO(a,b,c,d) # expeands to FOO4(a,b,c,d)
Naturally, if you define FOO2, FOO3 and FOO4, the ...
Message Queue vs Message Bus — what are the differences?
...ecouple various systems.
Tibco by contrast was (sold as a) messaging backbone, where you could have multiple publishers and subscribers on the same topics.
Both however (and newer competing products) can play in each other's space these days. Both can be set to interrupt as well as polling for ne...
Why prefer two's complement over sign-and-magnitude for signed numbers?
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It's done so that addition doesn't need to have any special logic for dealing with negative numbers. Check out the article on Wikipedia.
Say you have two numbers, 2 and -1. In your "intuitive" way of representing numbers, they wou...
LINQ: When to use SingleOrDefault vs. FirstOrDefault() with filtering criteria
...an return any amount of results but you state that you only want the first one.
I personally find the semantics very different and using the appropriate one, depending on the expected results, improves readability.
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Change templates in Xcode
...er hierarchy (or wherever you installed your developer tools).
Instead, clone the templates you want to have customized variants of. Then change their names and the information in them. Finally, put them in the appropriate location in your account's Library/Application Support folder, specificall...
Segue to another storyboard?
Is it possible to segue from one storyboard to another, or to embed a storyboard in a view controller in another storyboard? I need to place a UITabBarController in a UINavigationController , and I'd like to keep them nice and separate.
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Error 'LINK : fatal error LNK1123: failure during conversion to COFF: file invalid or corrupt' after
...om the Win 7 sdk so that link.exe doesn't find it and instead uses the new one from .NET 4.5. The Windows 8 SDK no longer contains the command line tools. You now have to install at least Visual Studio 2012 Express for Desktops to get the desktop app command line tools. The rename solution was deeme...