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Will the base class constructor be automatically called?
... What you say is true. However, there is nothing preventing Base from having a parameterless constructor in addition to the parameterized constructor that set SomeNumber to, say, a random number. AlwaysThreeDerived would still use the base(3) call, but another class (call it RandomDerived...
What are the best practices for SQLite on Android?
...
Inserts, updates, deletes and reads are generally OK from multiple threads, but Brad's answer is not correct. You have to be careful with how you create your connections and use them. There are situations where your update calls will fail, even if your database doesn't get co...
window.close and self.close do not close the window in Chrome
...ntroduced a while ago, to stop various malicious exploits and annoyances.
From the latest working spec for window.close():
The close() method on Window objects should, if all the following conditions are met, close the browsing context A:
The corresponding browsing context A is script-c...
How much faster is Redis than mongoDB?
...
Rough results from the following benchmark: 2x write, 3x read.
Here's a simple benchmark in python you can adapt to your purposes, I was looking at how well each would perform simply setting/retrieving values:
#!/usr/bin/env python2.7
im...
How to convert a NumPy array to PIL image applying matplotlib colormap
...scale to the 0-255 range.
Convert to integers, using np.uint8().
Use Image.fromarray().
And you're done:
from PIL import Image
from matplotlib import cm
im = Image.fromarray(np.uint8(cm.gist_earth(myarray)*255))
with plt.savefig():
with im.save():
...
How to find the lowest common ancestor of two nodes in any binary tree?
... possible. For both nodes in question construct a list containing the path from root to the node by starting at the node, and front inserting the parent.
So for 8 in your example, you get (showing steps): {4}, {2, 4}, {1, 2, 4}
Do the same for your other node in question, resulting in (steps not ...
Access string.xml Resource File from Java Android Code
How do you access the values in the res/values/string.xml resource file from the Android Activity class ?
5 Answers
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Type definition in object literal in TypeScript
...de Pattern as Alternative)
After many years of using const and benefiting from more functional code, I would recommend against using the below in most cases. (When building objects, forcing the type system into a specific type instead of letting it infer types is often an indication that something ...
How do you make a web application in Clojure? [closed]
... I worked on Java projects, but not Java-the-world. I never made a web app from scratch in Java. If I have to do it with Python, Ruby, I know where to go (Django or Rails), but if I want to make a web application in Clojure, not because I'm forced to live in a Java world, but because I like the lang...
How do you express binary literals in Python?
...es, for example:
>>> 0b0010101010
170
>>> 0B010101
21
From the Python 3 docs, these are the ways of providing integer literals in Python:
Integer literals are described by the following lexical definitions:
integer ::= decinteger | bininteger | octinteger | hexinteger...