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How to set input type date's default value to today?
...for me:
document.getElementById('datePicker').valueAsDate = new Date();
https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement
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what is the best way to convert a json formatted key value pair to ruby hash with symbol as key?
...sing the json string you can pass in the symbolize_names option. See here: http://flori.github.com/json/doc/index.html (look under parse)
eg:
>> s ="{\"akey\":\"one\",\"bkey\":\"two\"}"
>> JSON.parse(s,:symbolize_names => true)
=> {:akey=>"one", :bkey=>"two"}
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Alter a MySQL column to be AUTO_INCREMENT
...T PRIMARY KEY;
You can find more information in the MySQL documentation: http://dev.mysql.com/doc/refman/5.1/en/alter-table.html for the modify column syntax and http://dev.mysql.com/doc/refman/5.1/en/create-table.html for more information about specifying columns.
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Getting the count of unique values in a column in bash
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Rails 3.1: Engine vs. Mountable App
...hing --mountable = Engine with it's own namespace. (Awesome)
References
http://edgeguides.rubyonrails.org/engines.html
http://api.rubyonrails.org/classes/Rails/Engine.html
http://railscasts.com/episodes/277-mountable-engines
https://github.com/rails/rails/pull/6499
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What is the recommended approach towards multi-tenant databases in MongoDB?
...und this article on mongodb support site (way back added since it's gone):
https://web.archive.org/web/20140812091703/http://support.mongohq.com/use-cases/multi-tenant.html
The guys stated to avoid 2nd options at any cost, which as I understand is not particularly specific to mongodb. My impression...
How to specify more spaces for the delimiter using cut?
...ote that cuts field indexes are zero-based so 5th field is specified as 4
http://arielf.github.io/cuts/
And even shorter (not using cut at all) is:
pgrep jboss
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Performance difference between IIf() and If
... some very hard to fix bugs in an application as well.
[1] IIf Function - http://msdn.microsoft.com/en-us/library/27ydhh0d(VS.71).aspx
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MySQL “NOT IN” query
...e carefull NOT IN is not an alias for <> ANY, but for <> ALL!
http://dev.mysql.com/doc/refman/5.0/en/any-in-some-subqueries.html
SELECT c FROM t1 LEFT JOIN t2 USING (c) WHERE t2.c IS NULL
cant' be replaced by
SELECT c FROM t1 WHERE c NOT IN (SELECT c FROM t2)
You must use
SELECT...
How do I print the full value of a long string in gdb?
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