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How to add property to a class dynamically?
...ing on. Better late than never.
You can add a property to a class dynamically. But that's the catch: you have to add it to the class.
>>> class Foo(object):
... pass
...
>>> foo = Foo()
>>> foo.a = 3
>>> Foo.b = property(lambda self: self.a + 1)
>>&...
How to find out which package version is loaded in R?
... figuring out how to use my university cluster. It has 2 versions of R installed. System wide R 2.11 (Debian 6.0) and R 2.14.2 in non-standard location.
...
What are the allowed tags inside a ?
...ments and inline elements.
To me it wouldn't make much sense to put a <table> inside an <li>, but even that's still valid.
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How do I correctly clean up a Python object?
...it close() statement is that you have to worry about people forgetting to call it at all or forgetting to place it in a finally block to prevent a resource leak when an exception occurs.
To use the with statement, create a class with the following methods:
def __enter__(self)
def __exit__(self...
How do you import a large MS SQL .sql file?
...
I have some insert like: INSERT INTO table_name (text) VALUES ('some text bla bla 'bla' text') . I have error with quotes. SO What do i have to use (which parameter) to handle this error? Thanks
– Oleksandr Fentsyk
Jul 15...
How can I check if multiplying two numbers in Java will cause an overflow?
...t; 0 && b < maximum / a))
{
// Overflow
}
Here's a little table I whipped up to check this, pretending that overflow happens at -10 or +10:
a = 5 b = 2 2 > 10 / 5
a = 2 b = 5 5 > 10 / 2
a = -5 b = 2 2 > -10 / -5
a = -2 b = 5 5 > -10 / -...
how to break the _.each function in underscore.js
...t provide to escape the loop (other than throwing an exception).
However, all hope is not lost! You can use the Array.every method. :)
From that link:
every executes the provided callback function once for each element present in the array until it finds one where callback returns a false valu...
Transpose/Unzip Function (inverse of zip)?
...'d', 4)])
[('a', 'b', 'c', 'd'), (1, 2, 3, 4)]
The way this works is by calling zip with the arguments:
zip(('a', 1), ('b', 2), ('c', 3), ('d', 4))
… except the arguments are passed to zip directly (after being converted to a tuple), so there's no need to worry about the number of arguments g...
PyLint, PyChecker or PyFlakes? [closed]
...plus for everybody, but I like it ;-)
Cons of PyLint:
Some rules are really strict. I know that you can change it and that the default is to match PEP8, but is it such a crime to write 'for x in seq'? Apparently yes because you can't write a variable name with less than 3 letters. I will change ...
Change the mouse cursor on mouse over to anchor-like style
...s) this answer applies broadly. It is useful for any HTML element such as tables, <p>'s, buttons, etc. That's why I +1'd it.
– PeteH
Nov 19 '13 at 6:32
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