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How to define custom configuration variables in rails

...Rails Config gem nowadays for the fine grained control it provides. Update2 If you want a quick solution, then check Jack Pratt's answer below. Although my original answer below still works, this answer is now outdated. I recommend looking at updates 1 and 2. Original Answer: For a quick solut...
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Adding a new SQL column with a default value

...s use the same syntax for ADD and CHANGE as for CREATE TABLE. See Section 12.1.17, “CREATE TABLE Syntax”. And from the linked page: column_definition: data_type [NOT NULL | NULL] [DEFAULT default_value] [AUTO_INCREMENT] [UNIQUE [KEY] | [PRIMARY] KEY] [COMMENT 'string'] [COLU...
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Select distinct using linq [duplicate]

... 522 myList.GroupBy(test => test.id) .Select(grp => grp.First()); Edit: as getting thi...
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An explicit value for the identity column in table can only be specified when a column list is used

...IDENTITY_INSERT archive_table ON; INSERT INTO archive_table (field1, field2, ...) SELECT field1, field2, ... FROM source_table; SET IDENTITY_INSERT archive_table OFF; with field1, field2, ... containing the names of all columns in your tables. If you want to auto-generate that list of columns...
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Create a new workspace in Eclipse

... 275 I use File -> Switch Workspace -> Other... and type in my new workspace name. (EDIT: A...
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How can I add a hint text to WPF textbox?

... sellmeadogsellmeadog 6,87911 gold badge2424 silver badges3939 bronze badges 1 ...
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Contain form within a bootstrap popover?

... | edited Feb 8 '16 at 12:17 Lucky 13.9k1616 gold badges102102 silver badges135135 bronze badges answe...
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Django rest framework nested self-referential objects

... answered Nov 14 '12 at 10:40 Tom ChristieTom Christie 28.7k66 gold badges9090 silver badges7676 bronze badges ...
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Get Base64 encode file-data from Input Form

... 121 +50 It's ent...
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How do I print a double value without scientific notation using Java?

... 123 You could use printf() with %f: double dexp = 12345678; System.out.printf("dexp: %f\n", dexp);...