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How to find a hash key containing a matching value

... You could use Enumerable#select: clients.select{|key, hash| hash["client_id"] == "2180" } #=> [["orange", {"client_id"=>"2180"}]] Note that the result will be an array of all the matching values, where each is an array of the key and value. ...
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How do you use variables in a simple PostgreSQL script?

...c/sql-do.html ) DO $$ DECLARE v_List TEXT; BEGIN v_List := 'foobar' ; SELECT * FROM dbo.PubLists WHERE Name = v_List; -- ... END $$; Also you can get the last insert id: DO $$ DECLARE lastid bigint; BEGIN INSERT INTO test (name) VALUES ('Test Name') RETURNING id INTO lastid; ...
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SQL query for finding records where count > 1

...ers that have more than one payment per day with the same account number SELECT user_id , COUNT(*) count FROM PAYMENT GROUP BY account, user_id , date Having COUNT(*) > 1 Update If you want to only include those that have a distinct ZIP you can get a distinct set first and then perfor...
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How can I convert String to Int?

... is successful. I.e. in this case, x = 0 if the string has any non-integer characters, or x = value of string-as-integer otherwise. So the neat thing is this is one short expression which tells you if casting is successful or not, AND stores the cast integer in a variable at same time. Obviously you...
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git ignore vim temporary files

...ension to find another file that can be used. * First decrement the last char: ".swo", ".swn", etc. * If that still isn't enough decrement the last but one char: ".svz" * Can happen when editing many "No Name" buffers. */ if (fname[n - 1] == 'a') /* ".s?a" */ { if (fname[n - 2]...
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Regular cast vs. static_cast vs. dynamic_cast [duplicate]

...For example, the C-style cast would allow an integer pointer to point to a char. char c = 10; // 1 byte int *p = (int*)&c; // 4 bytes Since this results in a 4-byte pointer pointing to 1 byte of allocated memory, writing to this pointer will either cause a run-time error or will overwri...
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How can I get this ASP.NET MVC SelectList to work?

I create a selectList in my controller, to display in the view. 23 Answers 23 ...
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How do I show the number keyboard on an EditText in android?

...found this implementation useful, shows a better keyboard and limits input chars. <EditText android:inputType="phone" android:digits="1234567890" ... /> Additionally, you could use android:maxLength to limit the max amount of numbers. To do this programmatically: editText.set...
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How to get CSS to select ID that begins with a string (not in Javascript)?

... The specificity of this type of selector is very low – nuander Sep 3 '15 at 21:24 3 ...
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In Python, how do I split a string and keep the separators?

...re.sub. I wanted to split on a ending percent so I just subbed in a double character and then split, hacky but worked for my case: re.split('% ', re.sub('% ', '%% ', '5.000% Additional Whatnot')) --> ['5.000%', 'Additional Whatnot'] – Kyle James Walker Oct 1...