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Save PL/pgSQL output from PostgreSQL to a CSV file
...e to your local PC. It also needs to be run as a Postgres "superuser" (normally called "root") because Postgres can't stop it doing nasty things with that machine's local filesystem.
That doesn't actually mean you have to be connected as a superuser (automating that would be a security risk of a di...
How to find the Git commit that introduced a string in any branch?
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You can do:
git log -S <whatever> --source --all
To find all commits that added or removed the fixed string whatever. The --all parameter means to start from every branch and --source means to show which of those branches led to finding that commit. It's often usefu...
What is the difference between Gemfile and Gemfile.lock in Ruby on Rails
...emfile.lock file is where Bundler records the exact versions that were installed. This way, when the same library/project is loaded on another machine, running bundle install will look at the Gemfile.lock and install the exact same versions, rather than just using the Gemfile and installing the most...
How to start an Intent by passing some parameters to it?
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I think you want something like this:
Intent foo = new Intent(this, viewContacts.class);
foo.putExtra("myFirstKey", "myFirstValue");
foo.putExtra("mySecondKey", "mySecondValue");
startActivity(foo);
or you can combine them into a bundle first. Corresponding getExtra(...
How do I get the n-th level parent of an element in jQuery?
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Read further down the answer and all shall be revealed! (I've given you level examples)
– Henry
Aug 17 '11 at 13:37
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How is “int main(){(([](){})());}” valid C++?
...aning of a program in the case of the most vexing parse disambiguation : B foo(A()) foo is a function (taking a pointer to function as only parameter and returning a B) whereas in B foo((A())) foo is a B object constructed invoking a constructor taking a A object (which instance is an anonymous temp...
ArrayIndexOutOfBoundsException when using the ArrayList's iterator
...oing that right, as far as iterating through the Arraylist goes?
No: by calling iterator twice in each iteration, you're getting new iterators all the time.
The easiest way to write this loop is using the for-each construct:
for (String s : arrayList)
if (s.equals(value))
// ...
As...
How to negate specific word in regex? [duplicate]
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This says it all (I probably would have started with (?!bar) and built up). I don't see why other people are making it so complicated.
– Beta
Aug 7 '09 at 14:49
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Adding a new SQL column with a default value
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Try this:
ALTER TABLE table1 ADD COLUMN foo INT DEFAULT 0;
From the documentation that you linked to:
ALTER [ONLINE | OFFLINE] [IGNORE] TABLE tbl_name
alter_specification [, alter_specification] ...
alter_specification:
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ADD [COLUMN] (col_name c...
How to read lines of a file in Ruby
...ode to read lines from a file. But when reading a file , the contents are all in one line:
8 Answers
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