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Serializing class instance to JSON
...thon dict and if your class is simple it will be JSON 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 abo...
URL matrix parameters vs. query parameters
...ls of resources and sub-resources:
http://example.com/res/categories;name=foo/objects;name=green/?page=1
It really comes down to namespacing.
Note: The 'levels' of resources here are categories and objects.
If only query parameters were used for a multi-level URL, you would end up with
http:...
Add regression line equation and R^2 on graph
I wonder how to add regression line equation and R^2 on the ggplot . My code is:
9 Answers
...
Difference between \A \z and ^ $ in Ruby regular expressions
...
Difference By Example
/^foo$/ matches any of the following, /\Afoo\z/ does not:
whatever1
foo
whatever2
foo
whatever2
whatever1
foo
/^foo$/ and /\Afoo\z/ all match the following:
foo
...
Remove items from one list in another
I'm trying to figure out how to traverse a generic list of items that I want to remove from another list of items.
9 Answer...
How to install pip for Python 3 on Mac OS X?
OS X (Mavericks) has Python 2.7 stock installed. But I do all my own personal Python stuff with 3.3. I just flushed my 3.3.2 install and installed the new 3.3.3. So I need to install pyserial again. I can do it the way I've done it before, which is:
...
A fast method to round a double to a 32-bit int explained
When reading Lua's source code, I noticed that Lua uses a macro to round a double to a 32-bit int . I extracted the macro , and it looks like this:
...
How to copy from CSV file to PostgreSQL table with headers in CSV file?
I want to copy a CSV file to a Postgres table. There are about 100 columns in this table, so I do not want to rewrite them if I don't have to.
...
What are the rules for JavaScript's automatic semicolon insertion (ASI)?
...as a semicolon)
and due to this reason, the classic example of
return
{
foo: 1
}
will not work as expected, because the JavaScript interpreter will treat it as:
return; // returning nothing
{
foo: 1
}
There has to be no line-break immediately after the return:
return {
foo: 1
}
for it t...
How do I determine the size of my array in C?
...
And then you need to send an integer, so you code it up like this:
int foo = 4711;
send(&foo, sizeof (int));
Now, you've introduced a subtle way of shooting yourself in the foot, by specifying the type of foo in two places. If one changes but the other doesn't, the code breaks. Thus, alway...