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Difference between abstraction and encapsulation?
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@Sanjeev encapsulation is concrete, abstraction is...abstract! ;-) encapsulation is an object you can use, abstraction is an ideal you can ...
Why should a Java class implement comparable?
...aim majority of interfaces are consumed by the user's code. In larger code bases, "yourself" quickly becomes "others"
– Enno Shioji
May 2 '17 at 6:01
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Is Big O(logn) log base e?
...ically noted as O(logn). With a lowercase 'l' in log, does this imply log base e (n) as described by the natural logarithm? Sorry for the simple question but I've always had trouble distinguishing between the different implied logarithms.
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What is the runtime performance cost of a Docker container?
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Here's some more benchmarks for Docker based memcached server versus host native memcached server using Twemperf benchmark tool https://github.com/twitter/twemperf with 5000 connections and 20k connection rate
Connect time overhead for docker based memcached seem...
Why aren't superclass __init__ methods automatically invoked?
...construct a derived class in a way similar at all to how you construct the base class. You may have more parameters, fewer, they may be in a different order or not related at all.
class myFile(object):
def __init__(self, filename, mode):
self.f = open(filename, mode)
class readFile(myF...
How to inherit from a class in javascript?
...tor.
//The prototype is just an object when you use `Object.create()`
var Base = {};
//This is how you create an instance:
var baseInstance = Object.create(Base);
//If you want to inherit from "Base":
var subInstance = Object.create(Object.create(Base));
//Detect if subInstance is an instance of...
What is the difference between “px”, “dip”, “dp” and “sp”?
...x
Pixels - corresponds to actual pixels on the screen.
in
Inches - based on the physical size of the screen.
1 Inch = 2.54 centimeters
mm
Millimeters - based on the physical size of the screen.
pt
Points - 1/72 of an inch based on the physical size of the screen.
dp or dip
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How to parse/read a YAML file into a Python object? [duplicate]
.../wiki/PyYAMLDocumentation:
add_path_resolver(tag, path, kind) adds a path-based implicit tag resolver. A path is a list of keys that form a path to a node in the representation graph. Paths elements can be string values, integers, or None. The kind of a node can be str, list, dict, or None.
#!/usr...
Why is the order in dictionaries and sets arbitrary?
...ash values are assigned to slots in a dynamic table (it can grow or shrink based on needs). And that mapping process can lead to collisions, meaning that a key will have to be slotted in a next slot based on what is already there.
Listing the contents loops over the slots, and so keys are listed in...
What is the difference between class and instance attributes?
...name
def __get__(self, obj, objtype):
return self.val
class Base(object):
attr_1 = RevealAccess(10, 'var "x"')
def __init__(self):
self.attr_2 = RevealAccess(10, 'var "x"')
def main():
b = Base()
print("Access to class attribute, return: ", Base.attr_1)
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