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How to return result of a SELECT inside a function in PostgreSQL?
I have this function in PostgreSQL, but I don't know how to return the result of the query:
2 Answers
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What is attr_accessor in Ruby?
... Person.new
person.name = 'Dennis'
person.name # => "Dennis"
Awesome. Now we can write and read instance variable @name using reader and writer methods. Except, this is done so frequently, why waste time writing these methods every time? We can do it easier.
class Person
attr_reader :name
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CSS to make HTML page footer stay at bottom of the page with a minimum height, but not overlap the p
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This only works if you know the height of your footer ahead of time. Sometimes footers have dynamic content, or your building a framework. Any ideas for variable height footers?
– Costa
Jun 23 '14 at 16:31
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Database design for audit logging
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I don't know of any reference, but I'm sure someone has written something.
However, if the purpose is simply to have a record of what happened—the most typical use of an audit log—then why not simply keep everything:
timestamp
u...
Floating elements within a div, floats outside of div. Why?
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It works, but now I'm twice as confused: is there an explanation for this or is this just how it is?
– DavidR
Jan 14 '10 at 5:02
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How to set tbody height with overflow scroll
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Finally! I'm now able to have a fixed height, scrolling table body, fixed headers, adjustable column widths .... all without javascript! Thank you!!
– Matt Hancock
Dec 6 '15 at 23:13
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What is Cache-Control: private?
... sort of caching hints:
they forgot to include Expires, so the browser knows to use the cached copy until that date
they forgot to include Max-Age, so the browser knows how long the cached item is good for
they forgot to include E-Tag, so the browser can do a conditional request
But they did in...
Where can I learn how to write C code to speed up slow R functions? [closed]
...t's the best resource for learning how to write C code for use with R? I know about the system and foreign language interfaces section of R extensions, but I find it pretty hard going. What are good resources (both online and offline) for writing C code for use with R?
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How do I find the duplicates in a list and create another list with them?
...q):
seen = set()
seen_add = seen.add
# adds all elements it doesn't know yet to seen and all other to seen_twice
seen_twice = set( x for x in seq if x in seen or seen_add(x) )
# turn the set into a list (as requested)
return list( seen_twice )
a = [1,2,3,2,1,5,6,5,5,5]
list_duplicates(a...
Simple insecure two-way data “obfuscation”?
...is that DES is no longer considered state-of-the-art security. That title now goes to the AES algorithm I discuss below.
– Mark Brittingham
Dec 12 '08 at 13:04
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