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How to use a variable inside a regular expression?
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10 Answers
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Specifying column name in a “references” migration
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Do it manually:
add_column :post, :author_id, :integer
but now, when you create the belongs_t...
How to find out which view is focused?
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Call getCurrentFocus() on the Activity.
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Sharing Test code in Maven
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I recommend using type instead of classifier (see also: classifier). It tells Maven a bit mor...
How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
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Modern Versions of PostgreSQL
Suppose you have a table named test1, to which you want to add an auto-incrementing, primary-key id (surrogate) column. The following command should be sufficient in recent versions of PostgreSQL:
ALTER TABLE test1 ADD COLUMN id SERIAL PRIMARY KEY;
Older...
What is the “-->” operator in C++?
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edited Dec 23 '18 at 15:46
community wiki
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Modifying a subset of rows in a pandas dataframe
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edited Dec 3 '18 at 6:52
answered Sep 6 '12 at 19:37
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How to break nested loops in JavaScript? [duplicate]
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15 Answers
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Are the shift operators () arithmetic or logical in C?
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11 Answers
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NHibernate.MappingException: No persister for: XYZ
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16 Answers
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