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How to implement an abstract class in ruby?
...mented in child classes.
#
# Arguments:
# - methods (Symbol or Array) list of method names to be treated as
# abstract base methods
#
def self.abstract_methods(*methods)
methods.each do |method_name|
define_method method_name do
raise NotImplemented...
Can iterators be reset in Python?
...
Can nditer cycle through the array like itertools.cycle?
– LWZ
Aug 24 '13 at 18:37
1
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Best way to serialize an NSData into a hexadeximal string
...ta:NSData)->String{
if data.length > 0 {
let hexChars = Array("0123456789abcdef".utf8) as [UInt
How to get a complete list of ticker symbols from Yahoo Finance? [closed]
...ppen to store the list of companies starting with the given letter as a js array literal. you can also get nice tidy csv files from nasdaq.com here:
http://www.nasdaq.com/screening/companies-by-name.aspx?letter=0&exchange=nasdaq&render=download (replace exchange=nasdaq with exchange=nyse fo...
How can I sort a List alphabetically?
...do it(for learning purpose only)-
import java.util.List;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
class SoftDrink {
String name;
String color;
int volume;
SoftDrink (String name, String color, int volume) {
this.name = name;
...
Create instance of generic type whose constructor requires a parameter?
...: Activator.CreateInstance(typeof(T), new object[] {...}) where the object array contains the arguments for the constructor.
– Rob Vermeulen
Dec 11 '18 at 11:48
...
Analyze audio using Fast Fourier Transform
...
The array you are showing is the Fourier Transform coefficients of the audio signal. These coefficients can be used to get the frequency content of the audio. The FFT is defined for complex valued input functions, so the coeffici...
How to lazy load images in ListView in Android
...aught exception 10-13 09:58:46.768: ERROR/AndroidRuntime(24250): java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 0 10-13 09:58:46.768: ERROR/AndroidRuntime(24250): at java.util.Vector.elementAt(Vector.java:331) 10-13 09:58:46.768: ERROR/AndroidRuntime(24250): at java.util...
Remove characters from C# string
...eSpace(c) || char.IsLetterOrDigit(c)
select c
).ToArray());
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What is the significance of load factor in HashMap?
...hMap = 16 * 0.75 = 12. When the thirteenth element will be added capacity (array size) of HashMap will be doubled!
Perfect illustration answered this question:
image is taken from here:
https://javabypatel.blogspot.com/2015/10/what-is-load-factor-and-rehashing-in-hashmap.html
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