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Formatting Decimal places in R
...this page (e.g., signif, options(digits=...)) do not guarantee that a certain number of decimals are displayed for an arbitrary number. I presume this is a design feature in R whereby good scientific practice involves showing a certain number of digits based on principles of "significant figures". H...
Detect browser or tab closing
...wser JavaScript/jQuery code to detect if the browser or a browser tab is being closed, but not due to a link being clicked?
...
Get JavaScript object from array of objects by value of property [duplicate]
...ilter(obj => {
return obj.b === 6
})
console.log(result)
Find the value of the first element/object in the array, otherwise undefined is returned.
var result = jsObjects.find(obj => {
return obj.b === 6
})
See the MDN Docs on Array.prototype.find()
const jsObjects = [
...
map function for objects (instead of arrays)
...t = { 'a': 1, 'b': 2, 'c': 3 };
Object.keys(myObject).map(function(key, index) {
myObject[key] *= 2;
});
console.log(myObject);
// => { 'a': 2, 'b': 4, 'c': 6 }
But you could easily iterate over an object using for ... in:
var myObject = { 'a': 1, 'b': 2, 'c': 3 };
for (...
What is the difference between class and instance attributes?
Is there any meaningful distinction between:
5 Answers
5
...
Sorting rows in a data table
We have two columns in a DataTable , like so:
12 Answers
12
...
What are the details of “Objective-C Literals” mentioned in the Xcode 4.4 release notes?
I was going through the release notes for Xcode 4.4 and noticed this:
3 Answers
3
...
PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
How would it be possible to generate a random, unique string using numbers and letters for use in a verify link? Like when you create an account on a website, and it sends you an email with a link, and you have to click that link in order to verify your account
...
Graph Algorithm To Find All Connections Between Two Arbitrary Vertices
I am trying to determine the best time efficient algorithm to accomplish the task described below.
16 Answers
...
How to remove outliers from a dataset
...got some multivariate data of beauty vs ages. The ages range from 20-40 at intervals of 2 (20, 22, 24....40), and for each record of data, they are given an age and a beauty rating from 1-5. When I do boxplots of this data (ages across the X-axis, beauty ratings across the Y-axis), there are some ou...