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Best way to select random rows PostgreSQL
...he documentation: http://www.postgresql.org/docs/current/static/sql-select.html
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Does order of where clauses matter in SQL?
...ce plan creation: bradsruminations.blogspot.com/2010/04/looking-under-hood.html
– Justin Swartsel
Jul 11 '12 at 16:03
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How to use unicode characters in Windows command line?
...s: msdn.microsoft.com/en-us/library/windows/desktop/… , ss64.com/nt/chcp.html , technet.microsoft.com/en-us/library/bb490874.aspx Turkish chcp is 857 .
– caglaror
Dec 4 '14 at 11:42
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How can I maintain fragment state when added to the back stack?
...he Fragment is displayed: developer.android.com/guide/components/fragments.html I'm fighting this issue now, and I don't see any methods called when returning a fragment from the backstack. (Android 4.2)
– Colin M.
Nov 26 '12 at 21:13
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Pass correct “this” context to setTimeout callback?
...cess it, you are accessing the this value of the enclosing lexical scope.
HTML5 also standardized timers back in 2011, and you can pass now arguments to the callback function:
if (this.options.destroyOnHide) {
setTimeout(function(that){ that.tip.destroy() }, 1000, this);
}
See also:
setTi...
JavaScript OOP in NodeJS: how?
...elper that comes with the standard util module: http://nodejs.org/api/util.html#util_util_inherits_constructor_superconstructor
There is an example of how to use it on the linked page.
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How do I write good/correct package __init__.py files
...ut automatically importing modules
http://docs.python.org/tutorial/modules.html#importing-from-a-package
using __all__ and import * is redundant, only __all__ is needed
I think one of the most powerful reasons to use import * in an __init__.py to import packages is to be able to refactor a script ...
When to use a key/value store such as Redis instead/along side of a SQL database?
...e:
http://antirez.com/post/take-advantage-of-redis-adding-it-to-your-stack.html
I bet you'll have an aha! moment. ;)
A quote from a previous reader:
I've read about Redis before and heard how companies are using it, but never completely understood it's purpose. After reading this I can actuall...
Do I need a content-type header for HTTP GET requests?
...hey're optional though.
http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1
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Understanding dispatch_async
...ral/Conceptual/ConcurrencyProgrammingGuide/OperationQueues/OperationQueues.html
A concurrent dispatch queue is useful when you have multiple tasks that can run in parallel. A concurrent queue is still a queue in that it dequeues tasks in a first-in, first-out order; however, a concurrent queue m...