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What does it mean for a data structure to be “intrusive”?
...ructure is one that requires help from the elements it intends to store in order to store them.
Let me reword that. When you put something into that data structure, that "something" becomes aware of the fact that it is in that data structure, in some way. Adding the element to the data structure ch...
What does functools.wraps do?
...@wim: I've written some decorators which do their own version of @wraps in order to perform various types of modification or annotation on the values copied over. Fundamentally, it's an extension of the Python philosophy that explicit is better than implicit and special cases aren't special enough t...
How do I output the difference between two specific revisions in Subversion?
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If you want pretty output, install colordiff and add ` | colordiff` to the end of the above command to pipe everything through it.
– William Turrell
Sep 28 '16 at 19:25
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What does it mean if a Python object is “subscriptable” or not?
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Why use a public method in an internal class?
...ation detail; something else internal to this assembly needs the member in order to work correctly. A public member says "this member represents the key, documented functionality provided by this object."
Basically, my attitude is: suppose I decided to make this internal class into a public class. ...
What is the purpose of the single underscore “_” variable in Python?
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Abstract methods in Python [duplicate]
...to reach method implementations in an ABC, not that you need to use abc in order to use super(). super() works with any new-style class.
– kindall
Sep 20 '17 at 18:41
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Call a Server-side Method on a Resource in a RESTful Way
... (i.e., so that intermediaries don’t have to
know the resource type in order to understand the meaning of the
request).
In the above examples, POST is uniformly designed. It will make the dog "bark". That is not safe (meaning bark has effects on the resources), nor idempotent (each request y...
Why does += behave unexpectedly on lists?
... operands and makes a new list containing those elements maintaining their order.
+= operator calls __iadd__ method on the list. It takes an iterable and appends all the elements of the iterable to the list in place. It does not create a new list object.
In class foo the statement self.bar +=...
How to find out if an item is present in a std::vector?
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If your vector is not ordered, use the approach MSN suggested:
if(std::find(vector.begin(), vector.end(), item)!=vector.end()){
// Found the item
}
If your vector is ordered, use binary_search method Brian Neal suggested:
if(binary_searc...