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What's the 'environment' task in Rake?
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edited Oct 3 '13 at 0:09
the Tin Man
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Postgres unique constraint vs index
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Let's check uniqueness, just in case.
test=# insert into master values (0, 0);
INSERT 0 1
test=# insert into master values (0, 1);
ERROR: duplicate key value violates unique constraint "master_con_id_key"
DETAIL: Key (con_id)=(0) already exists.
test=# insert into master values (1, 0);
ERROR: ...
Linq to EntityFramework DateTime
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202
When using LINQ to Entity Framework, your predicates inside the Where clause get translated to ...
Repeat string to certain length
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Joop
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answered Aug 2 '10 at 19:30
Jason ScheirerJason Scheirer
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Efficiently updating database using SQLAlchemy ORM
...on on commit you don't have any stale data issues.
In the almost-released 0.5 series you could also use this method for updating:
session.query(Stuff).update({Stuff.foo: Stuff.foo + 1})
session.commit()
That will basically run the same SQL statement as the previous snippet, but also select the c...
How to make vi redraw screen?
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edited Feb 27 '18 at 2:06
Chris Anderson
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answered Jul 13 '0...
SQL Server indexes - ascending or descending, what difference does it make?
...ndex on a column or number of columns in MS SQL Server (I'm using version 2005), you can specify that the index on each column be either ascending or descending. I'm having a hard time understanding why this choice is even here. Using binary sort techniques, wouldn't a lookup be just as fast either ...
Navigation drawer - disable swipe
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answered Jul 27 '13 at 20:48
h4rd4r7c0r3h4rd4r7c0r3
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Initializing a two dimensional std::vector
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208
Use the std::vector::vector(count, value) constructor that accepts an initial size and a defaul...
Matplotlib: draw grid lines behind other graph elements
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According to this - http://matplotlib.1069221.n5.nabble.com/axis-elements-and-zorder-td5346.html - you can use Axis.set_axisbelow(True)
(I am currently installing matplotlib for the first time, so have no idea if that's correct - I just found it by googling "matp...