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How do I select a random value from an enumeration?
... .OfType<Enum>() // casts to Enum
.OrderBy(e => Guid.NewGuid()) // mess with order of results
.FirstOrDefault(); // take first item in result
}
}
public static class Program
{
public enum SomeEnum
{
One = 1,
...
Change string color with NSAttributedString?
...sible UIViewController implementation that relies on NSAttributedString in order to update the text and text color of a UILabel from a UISlider:
import UIKit
enum Status: Int {
case veryBad = 0, bad, okay, good, veryGood
var display: (text: String, color: UIColor) {
switch self {
...
Context switches much slower in new linux kernels
...able
plain old Unix signals
I had to add
#include <stdint.h>
in order to compile, which I did with this command
g++ -O3 -o condvar-perf condvar-perf.cpp -lpthread -lrt
On kernel 2.6.32
$ ./condvar-perf 1000000
NPTL
mutex elapsed: 29085 us; per iteration: 29 ns / 9...
Python: Find in list
...ilter(fulfills_some_condition, lst)
in Python 2. Here you can see higher-order functions at work. In Python 3, filter doesn't return a list, but a generator-like object.
Finding the first occurrence
If you only want the first thing that matches a condition (but you don't know what it is yet), it...
How do you round a float to two decimal places in jruby
...
This doesn't work. In order to get it to work you need to account for any size number. Using the pattern implemented here you can: def float_of_2_decimal(float_n) num = float_n.to_s.split('.') num[1] = num[1][0..1] num...
Laravel Schema onDelete set null
...el / framework / src / Illuminate / Database / Schema / Grammars / Grammar.php)
– Dirk Jan
Mar 23 at 14:47
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The difference between sys.stdout.write and print?
... buffers the input and might not flush the input to the fd immediately. in order to make sure that it behaves like the print function, you should add: sys.stdout.flush()
– kerbelp
Nov 16 '17 at 7:27
...
Failed to execute 'btoa' on 'Window': The string to be encoded contains characters outside of the La
...ItaloBorssatto It was the only solution that worked for me. I needed it in order to grab the d3 svg chart, serialize it using XMLSerializer, pass it into btoa() (this is where I used your solution) to create a base-64 encoded ASCII string, then pass it into image element which is then drawn into can...
Fatal error: “No Target Architecture” in Visual Studio
...ase I included xinput.h before windows.h and got this error. Swapping the order solved the problem.
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How to add an Access-Control-Allow-Origin header
...off2)$">
<IfModule mod_headers.c>
Header set Access-Control-Allow-Origin "*"
</IfModule>
</FilesMatch>
also in your remote CSS file, the font-face declaration needs the full absolute URL of the font-file (not needed in local CSS files):
e.g.
@font-face {
font-fa...