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Pick a random value from an enum?
...m.values().random()
random() is a default extension function included in base Kotlin on the Collection object. Kotlin Documentation Link
If you'd like to simplify it with an extension function, try this:
inline fun <reified T : Enum<T>> random(): T = enumValues<T>().random()
/...
Remove Item from ArrayList
...ist<E> - why would anyone want to remove an object from an ArrayList based purely on position instead of testing what's at that position? The OP may well be using String as the object type for the ArrayList but your answer is really bad coding practice for generics even if it does solve the OP...
How can I listen to the form submit event in javascript?
...
Based on your requirements you can also do the following without libraries like jQuery:
Add this to your head:
window.onload = function () {
document.getElementById("frmSubmit").onsubmit = function onSubmit(form) {
...
Convert Iterable to Stream using Java 8 JDK
...
Based on your explanation, I'm curious why we got Collection.stream() but not Iterable.stream(). It seems like the reasoning to omit Iterable.stream() (or Stream.ofIterable()) applies equally to Collection.stream().
...
What open source C++ static analysis tools are available? [closed]
... initialization to assignment in constructors.
Make destructors virtual in base classes.
Have "operator=" return a reference to *this.
Don’t try to return a reference when you must return an object.
Distinguish between prefix and postfix forms of increment and decrement operators.
Never overload "...
What is the difference between atan and atan2 in C++?
...
tan(α) = sin(α) / cos(α)
and we differentiate between four quadrants based on the angle that we supply to the functions. The sign of the sin, cos and tan have the following relationship (where we neglect the exact multiples of π/2):
Quadrant Angle sin cos tan
----------...
How do I resize an image using PIL and maintain its aspect ratio?
... multiplying the original height (img.size[1]) by that percentage. Change "basewidth" to any other number to change the default width of your images.
from PIL import Image
basewidth = 300
img = Image.open('somepic.jpg')
wpercent = (basewidth/float(img.size[0]))
hsize = int((float(img.size[1])*floa...
iPhone OS: How do I create an NSDate for a specific date?
...= [DateHelper parseDateString:@"Jul 16, 2013"];
Note: this function was based on code taken from here:
https://stackoverflow.com/a/3968411/391605
My solution had been to use the following code, but I found that sometimes, it just wouldn't parse, and would return nil.
// Take a date string in t...
Optimize Font Awesome for only used classes
...
Well, the sass can certainly be jiggled a little to make the selectors % based so they are extendable only. Once this is done, classes can be made to match the wanted icons, and then can @extend the font-awesome classes.
Personally, I do this, and don't actually use the classes in the markup, and...
JSHint and jQuery: '$' is not defined
...his problem. It keeps your code "contained" and gives a performance boost (based on Paul Irish's "10 things I learned about Jquery").
I tend to write my module patterns like this:
(function (window) {
// Handle dependencies
var angular = window.angular,
$ = window.$,
docume...