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How to find time complexity of an algorithm
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This is an excellent article :
http://www.daniweb.com/software-development/computer-science/threads/13488/time-complexity-of-algorithm
The below answer is copied from above (in case the excellent link goes bust)
The most common metric for calculating time compl...
Standardize data columns in R
...scale"))
newData <- predict(preObj, data[, -10])
More details: http://www.inside-r.org/node/86978
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How to create border in UIButton?
...= 2.0f;
myButton.layer.borderColor = [UIColor greenColor].CGColor;
See:
https://developer.apple.com/documentation/quartzcore/calayer#//apple_ref/occ/cl/CALayer
The CALayer in the link above allows you to set other properties like corner radius, maskToBounds etc...
Also, a good article on button...
Identify if a string is a number
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int n;
bool isNumeric = int.TryParse("123", out n);
Update As of C# 7:
var isNumeric = int.TryParse("123", out int n);
or if you don't need the number you can discard the out parameter
var isNumeric = int.TryParse("123", out _);
The var s can be replaced ...
Is it Pythonic to use list comprehensions for just side effects?
Think about a function that I'm calling for its side effects, not return values (like printing to screen, updating GUI, printing to a file, etc.).
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Detecting when user has dismissed the soft keyboard
...ow...
So I created a more neat solution with Kotlin
1.Create an extension function:
fun Activity.addKeyboardToggleListener(onKeyboardToggleAction: (shown: Boolean) -> Unit): KeyboardToggleListener? {
val root = findViewById<View>(android.R.id.content)
val listener = KeyboardToggl...
HTML encoding issues - “” character showing up instead of “ ”
...miter - headers already sent (output started at D:\Program Files\wamp\wamp\www\projects\kerala\kerala_public_html\edit\business_details.php:1) in D:\Program Files\wamp\wamp\www\projects\kerala\kerala_public_html\user\include\fg_membersite.php on line 152
– SCC
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How to identify numpy types in python?
...couraged if it's not intuitive or easy, it's a pain at first.
See also:
- https://docs.scipy.org/doc/numpy-1.15.1/reference/arrays.dtypes.html
- https://github.com/machinalis/mypy-data/tree/master/numpy-mypy
>>> import numpy as np
>>> np.ndarray
<class 'numpy.ndarray'>
>...
How to convert SecureString to System.String?
... Andrew ArnottAndrew Arnott
72.7k2424 gold badges123123 silver badges162162 bronze badges
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How to Query an NTP Server using C#?
...ntry(ntpServer).AddressList;
//The UDP port number assigned to NTP is 123
var ipEndPoint = new IPEndPoint(addresses[0], 123);
//NTP uses UDP
using(var socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp))
{
socket.Connect(ipEndPoint);
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