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Copy a table from one database to another in Postgres
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Extract the table and pipe it directly to the target database:
pg_dump -t table_to_copy source_db | psql target_db
Note: If the other database already has the table set up, you should use the -a flag to import data only, else you may see we...
How to get a cross-origin resource sharing (CORS) post request working
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This is the only way I know to truly POST cross-domain from JS.
JSONP converts the POST into GET which may display sensitive information at server logs.
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Can I invoke an instance method on a Ruby module without including it?
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module_function converts the method to a private one (well it does in my IRB anyway), which would break other callers :-(
– Orion Edwards
Nov 27 '08 at 0:19
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What does this thread join code mean?
In this code, what does the two joins and break mean? t1.join() causes t2 to stop until t1 terminates?
10 Answers
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Python recursive folder read
...tory may change during script execution, it's recommended to
# immediately convert program arguments to an absolute path. Then the variable root below will
# be an absolute path as well. Example:
# walk_dir = os.path.abspath(walk_dir)
print('walk_dir (absolute) = ' + os.path.abspath(walk_dir))
for ...
How to create a file in memory for user to download, but not through server?
... The correct charset is almost certainly UTF-16, unless you have code converting it to UTF-8. JavaScript uses UTF-16 internally. If you have a text or CSV file, start the string with '\ufeff', the Byte Order Mark for UTF-16BE, and text editors will be able to read non-ASCII characters correctly...
Given a DateTime object, how do I get an ISO 8601 date in string format?
...e correct. FYI the formatexception's message is: "A UTC DateTime is being converted to text in a format that is only correct for local times. This can happen when calling DateTime.ToString using the 'z' format specifier, which will include a local time zone offset in the output."
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sql primary key and index
...x does no good, but the only harm (very small) is the additional file size and row-creation overhead.
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Why should the copy constructor accept its parameter by reference in C++?
...cause if it's not by reference, it's by value. To do that you make a copy, and to do that you call the copy constructor. But to do that, we need to make a new value, so we call the copy constructor, and so on...
(You would have infinite recursion because "to make a copy, you need to make a copy".)
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How to change the Text color of Menu item in Android?
Can I change the background color of a Menu item in Android?
27 Answers
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