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Access multiple elements of list knowing their index
...r.itemgetter:
from operator import itemgetter
a = [-2, 1, 5, 3, 8, 5, 6]
b = [1, 2, 5]
print(itemgetter(*b)(a))
# Result:
(1, 5, 5)
Or you can use numpy:
import numpy as np
a = np.array([-2, 1, 5, 3, 8, 5, 6])
b = [1, 2, 5]
print(list(a[b]))
# Result:
[1, 5, 5]
But really, your current solu...
Sort array of objects by string property value
I have an array of JavaScript objects:
47 Answers
47
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How do I parse command line arguments in Bash?
Say, I have a script that gets called with this line:
37 Answers
37
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Best way to make Java's modulus behave like it should with negative numbers?
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It behaves as it should a % b = a - a / b * b; i.e. it's the remainder.
You can do (a % b + b) % b
This expression works as the result of (a % b) is necessarily lower than b, no matter if a is positive or negative. Adding b ...
HTML5 canvas ctx.fillText won't do line breaks?
...ulti-line support. Whats worse, there's no built-in way to measure line height, only width, making doing it yourself even harder!
A lot of people have written their own multi-line support, perhaps the most notable project that has is Mozilla Skywriter.
The gist of what you'll need to do is multipl...
Calling parent class __init__ with multiple inheritance, what's the right way?
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Both ways work fine. The approach using super() leads to greater flexibility for subclasses.
In the direct call approach, C.__init__ can call both A.__init__ and B.__init__.
When using super(), the classes need to be des...
How to use sessions in an ASP.NET MVC 4 application?
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Try
//adding data to session
//assuming the method below will return list of Products
var products=Db.GetProducts();
//Store the products to a session
Session["products"]=products;
//To get what you have stored to a session
var pro...
byte[] to hex string [duplicate]
How do I convert a byte[] to a string ? Every time I attempt it, I get
19 Answers
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Is there a unique Android device ID?
...ngs.Secure#ANDROID_ID returns the Android ID as an unique for each user 64-bit hex string.
import android.provider.Settings.Secure;
private String android_id = Secure.getString(getContext().getContentResolver(),
Secure.ANDROID_ID);
Also read ...
What is the fastest or most elegant way to compute a set difference using Javascript arrays?
Let A and B be two sets. I'm looking for really fast or elegant ways to compute the set difference ( A - B or A \B , depending on your preference) between them. The two sets are stored and manipulated as Javascript arrays, as the title says.
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