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Find rows with multiple duplicate fields with Active Record, Rails & Postgres
...up(:first,:email).having("count(*) > 1").size
and you'll get a result set back that looks like this:
{[nil, nil]=>512,
["Joe", "test@test.com"]=>23,
["Jim", "email2@gmail.com"]=>36,
["John", "email3@gmail.com"]=>21}
Thought that was pretty cool and hadn't seen it before.
Cred...
Lambda Expression and generic method
..., the compiler could decude a capure type as it does when you declare e.g. Set<?> and do type-checks with those captured types. Sure, that makes it impossible to give them as type-parameters in the body, but if you'd need that, resorting to method references is a good alternative
...
How to get Enum Value from index in Java?
...LastIndex();
Countries currCountry = Countries.getCountry(i);
}
which sets currCountry to the last country, in this case Countries.KENTUCKY.
Just remember this code is very affected by ArrayOutOfBoundsExceptions if you're using hardcoded indicies to get your objects.
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Get list of all tables in Oracle?
...:
SELECT owner, table_name
FROM all_tables
Although, that may be a subset of the tables available in the database (ALL_TABLES shows you the information for all the tables that your user has been granted access to).
If you are only concerned with the tables that you own, not those that you ha...
Where to store global constants in an iOS application?
...on-wide constants file, but each of my other code files #defines different sets of constants to include before #include-ing the constants file (stops all those "defined but not used" compiler warnings).
– user244343
Aug 19 '11 at 2:26
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How to redirect a url in NGINX
... cached permanent redirect, which makes it very troublesome to change your settings for clients that have already accessed a URL. (I know the OP asked for a 301, but be sure that's really what you want.)
– Nick Merrill
Feb 21 '16 at 17:35
...
How to get highcharts dates in the x axis?
...
I set it up as in your example, but it still shows milliseconds when I give it data more often than once per second. Do you have any idea why?
– Niels Brinch
Aug 21 '13 at 18:03
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JavaScript code to stop form submission
...t;
In case of Chrome 27.0.1453.116 m if above code does not work, please set the event handler's parameter's returnValue field to false to get it to work.
Thanks Sam for sharing information.
EDIT :
Thanks to Vikram for his workaround for if validateMyForm() returns false:
<form onsubmit="...
Where does PHP store the error log? (php5, apache, fastcgi, cpanel)
... @PHPLOVER: you could easily control the reporting level with the setting error_reporting(E_ALL|E_STRICT);se.php.net/manual/en/function.error-reporting.php
– chelmertz
Feb 26 '11 at 16:39
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Is there any way to create a blank solution (.sln) file first and then add projects?
...lutions from the expanded list.
In the middle pane, select Blank Solution.
Set the Name and Location values for your solution, then click OK.
http://msdn.microsoft.com/en-us/library/zfzh36t7.aspx
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