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Bulk insert with SQLAlchemy ORM
...
User(name="u2"),
User(name="u3")
]
s.bulk_save_objects(objects)
s.commit()
Here, a bulk insert will be made.
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Learning Python from Ruby; Differences and Similarities
...l read and write access to variables from the outer scope.
Python has list comprehensions, which are pretty expressive. For example, if you have a list of numbers, you can write
[x*x for x in values if x > 15]
to get a new list of the squares of all values greater than 15. In Ruby, you'd hav...
How do CUDA blocks/warps/threads map onto CUDA cores?
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Using multiple arguments for string formatting in Python (e.g., '%s … %s')
I have a string that looks like '%s in %s' and I want to know how to seperate the arguments so that they are two different %s. My mind coming from Java came up with this:
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Stop node.js program from command line
...unbinding from any ports it is listening on.
See also: https://superuser.com/a/262948/48624
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Sleep until a specific time/date
I want my bash script to sleep until a specific time. So, I want a command like "sleep" which takes no interval but an end time and sleeps until then.
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How do I add custom field to Python log format string?
My current format string is:
7 Answers
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postgresql port confusion 5433 or 5432?
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Many-to-many relationship with the same model in rails?
...Simplest scenario, uni-directional, no additional fields
This is the most compact in code.
I'll start out with this basic schema for your posts:
create_table "posts", :force => true do |t|
t.string "name", :null => false
end
For any many-to-many relationship, you need a join table. Her...
Is there a generator version of `string.split()` in Python?
string.split() returns a list instance. Is there a version that returns a generator instead? Are there any reasons against having a generator version?
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