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Matplotlib scatterplot; colour as a function of a third variable
...
In matplotlib grey colors can be given as a string of a numerical value between 0-1.
For example c = '0.1'
Then you can convert your third variable in a value inside this range and to use it to color your points.
In the following example I used the y position of the ...
What does the JSLint error 'body of a for in should be wrapped in an if statement' mean?
...is name (key, index) value pairs, where the value can be any other object (strings are objects too)
So,
new Array() is the same as []
new Object() is roughly similar to {}
var myarray = [];
Creates a structure that is an array with the restriction that all indexes (aka keys) must be a whole num...
Class method decorator with self arguments?
...t reads the attribute off of that. You can pass in the attribute name as a string to the decorator and use getattr if you don't want to hardcode the attribute name:
def check_authorization(attribute):
def _check_authorization(f):
def wrapper(self, *args):
print getattr(self,...
How do you get a Golang program to print the line number of the error it just called?
...es me to have to create a variable for it, why can't there be a log.Fatal("string", log.Flag). But creating a new variable log did work. Is it a standard thing to create log variables and stuff?
– Pinocchio
Jul 17 '14 at 19:01
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Create Django model or update if exists
...a value that evaluates
to True (i.e., a value other than None or the empty string), Django
executes an UPDATE. If the object’s primary key attribute is not set
or if the UPDATE didn’t update anything, Django executes an INSERT.
It's worth noting that when they say 'if the UPDATE didn't update a...
Are PHP short tags acceptable to use?
...xing PHP and XML anyway; and if you are, you should be using PHP to output strings of text. Security should never be an issue, because if you're putting sensitive information like database access credentials inside of template files, well then, you've got bigger issues!
Now then, as to the issue of...
What does the M stand for in C# Decimal literal notation?
...
"c" conflicts with the character literal for strings in VB.Net, though even there the grammar is a little different.
– Joel Coehoorn
Jun 10 '09 at 19:39
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How to use the pass statement?
...(including just a term to be evaluated, like the Ellipsis literal ... or a string, most often a docstring) can be used, but the pass makes clear that indeed nothing is supposed to happen, and does not need to be actually evaluated and (at least temporarily) stored in memory.
Ignoring (all or) a ce...
Iterating through directories with Python
...rences, such as the path library returns specific path classes rather than strings, and the available functions differ between the libraries (e.g. os.path.expanduser('~') vs Path.home()). Browse through the documentation and see which approach you prefer.
– joelostblom
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Why are Where and Select outperforming just Select?
...e execution of where+select vs select with same results.
static void Main(string[] args)
{
int total = 10000000;
Random r = new Random();
var list = Enumerable.Range(0, total).Select(i => r.Next(0, 5)).ToList();
for (int i = 0; i < 40000...