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How do I get the MIN() of two fields in Postgres?
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You can get the answer by putting that data into a column like this:
SELECT name, MIN(score_a, score_b) as minimum_score
FROM table
Here, we are putting the minimum value among score_a and score_b and printing the same by storing that value in a...
Real-world applications of zygohistomorphic prepromorphisms
...he closest thing I've seen with a real world use. Though there are slides by Jevgeni Kabanov using histomorphisms for dynamic programming: cs.ioc.ee/~tarmo/tday-viinistu/kabanov-slides.pdf
– stephen tetley
Feb 21 '11 at 21:00
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What is an NP-complete in computer science?
...n polynomial time (O(nk) where n is the problem size, and k is a constant) by a deterministic Turing machine. Polynomial time is sometimes used as the definition of fast or quickly.
What is P?
P is the set of all decision problems which can be solved in polynomial time by a deterministic Turing mach...
Amazon EC2, mysql aborting start because InnoDB: mmap (x bytes) failed; errno 12
...on an Amazon EC2 micro instance. I tried decreasing inno_db's memory usage by adding the following to /etc/my.cnf
innodb_buffer_pool_size = 64M
That didn't work, I tried dropping it down to 16M and it still didnt work. Then I realized that the instance had basically zero free memory. So I tried ...
MAMP Pro 3.05 on Mavericks updated to Yosemite - Apache does not start
...e's location was changed in Yosemite leading to it not being found anymore by the path defined in "envvars" when we rename the file, we are letting MAMP find the module on it's own without any predefined paths.
– intractve
Oct 27 '14 at 13:12
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@selector() in Swift?
...ton)
The great thing about this approach? A function reference is checked by the Swift compiler, so you can use the #selector expression only with class/method pairs that actually exist and are eligible for use as selectors (see "Selector availability" below). You're also free to make your function...
What are “sugar”, “desugar” terms in context of Java 8?
... for example).
This being said, desugaring refers either to
the process by which you remove all that is redundant in a language
the process by which a code processor finds out what's behind a sugared statement (this may for example involves type inference)
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CSS force image resize and keep aspect ratio
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<p>This image is originally 400x400 pixels, but should get resized by the CSS:</p>
<img width="400" height="400" src="http://i.stack.imgur.com/aEEkn.png">
This will make image shrink if it's too big for specified area (as downside, it will not enlarge image).
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Creating an API for mobile applications - Authentication and Authorization
...I for my application. The initial/primary purpose will be for consumption by mobile apps (iPhone, Android, Symbian, etc). I've been looking into different mechanisms for authentication and authorization for web-based APIs (by studying other implementations). I've got my head wrapped around most o...
How to read data when some numbers contain commas as thousand separator?
...is=TRUE instead which would be more general. But letting read.csv() decide by using the default arguments is not helpful because it will convert anything that looks like a character into a factor which causes hassles for the numeric columns as then they don't convert properly using as.numeric().
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