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Python: Why is functools.partial necessary?
....partial offer that you can't get through lambdas?
Not much in terms of extra functionality (but, see later) – and, readability is in the eye of the beholder.
Most people who are familiar with functional programming languages (those in the Lisp/Scheme families in particular) appear to like lambd...
Serializing class instance to JSON
...SON serializable.
class Foo(object):
def __init__(self):
self.x = 1
self.y = 2
foo = Foo()
s = json.dumps(foo) # raises TypeError with "is not JSON serializable"
s = json.dumps(foo.__dict__) # s set to: {"x":1, "y":2}
The above approach is discussed in this blog posting:
...
What do I use for a max-heap implementation in Python?
Python includes the heapq module for min-heaps, but I need a max heap. What should I use for a max-heap implementation in Python?
...
What's the difference between IQueryable and IEnumerable
...eing fairly new to .Net, I know I can query IEnumerables using the Linq extensions. So what is this IQueryable and how does it differ?
...
Tri-state Check box in HTML?
...s comment, I found a better solution:
HTML5 defines a property for checkboxes called indeterminate
See w3c reference guide. To make checkbox appear visually indeterminate set it to true:
element.indeterminate = true;
Here is Janus Troelsen's fiddle. Note, however, that:
The indeterminate stat...
Is It Possible to Sandbox JavaScript Running In the Browser?
I'm wondering if it's possible to sandbox JavaScript running in the browser to prevent access to features that are normally available to JavaScript code running in an HTML page.
...
LLVM vs clang on OS X
I have a question concerning llvm, clang, and gcc on OS X.
3 Answers
3
...
Why should I prefer to use member initialization lists?
...ary call to a default constructor. Consider:
class A
{
public:
A() { x = 0; }
A(int x_) { x = x_; }
int x;
};
class B
{
public:
B()
{
a.x = 3;
}
private:
A a;
};
In this case, the constructor for B will call the default constructor for A, and then initialize ...
What is the significance of initializing direction arrays below with given values when developing ch
...[i] is a different direction.
If we imagine we have a piece at a location x,y, and we want to add onto its x and its y value to move it to a nearby location, 1,0 is east, -1,0 is west, 0,1 is south, 0,-1 is north and so on.
(Here I have said top left is 0,0 and bottom right is 4,4 and shown what m...
Numpy `logical_or` for more than two arguments
...
If you're asking about numpy.logical_or, then no, as the docs explicitly say, the only parameters are x1, x2, and optionally out:
numpy.logical_or(x1, x2[, out]) = <ufunc 'logical_or'>
You can of course chain together multiple logical_or calls like this:
>>> x = n...