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What is the difference between require_relative and require in Ruby?
...you are using git which is largely a de-facto standard at this point, late 2018).
Note that require_relative uses the current directory of the file with the require_relative statement (so not necessarily your current directory that you are using the command from). This keeps the require_relative pa...
Creating an API for mobile applications - Authentication and Authorization
...answered Oct 19 '10 at 5:59
Michael AndersonMichael Anderson
57.2k77 gold badges110110 silver badges159159 bronze badges
...
Parse string to date with moment.js
...but I only care about the date.
function momentTest() {
var varDate = "2018-01-19 18:05:01.423";
var myDate = moment(varDate,"YYYY-MM-DD").format("DD-MM-YYYY");
var todayDate = moment().format("DD-MM-YYYY");
var yesterdayDate = moment().subtract(1, 'days').format("DD-MM-YYYY");
var...
Bootstrap 3.0 - Fluid Grid that includes Fixed Column Sizes
...
Updated 2018
IMO, the best way to approach this in Bootstrap 3 would be using media queries that align with Bootstrap's breakpoints so that you only use the fixed width columns are larger screens and then let the layout stack respon...
What's the meaning of “=>” (an arrow formed from equals & greater than) in JavaScript?
...r fully supported in Node v. 4.0+ and in most modern browsers in use as of 2018. (I’ve included a partial list of supporting browsers below).
You can read more in the Mozilla documentation on arrow functions.
From the Mozilla documentation:
An arrow function expression (also known as fat arrow fu...
How to generate a Dockerfile from an image?
...
Update Dec 2018 to BMW's answer
chenzj/dfimage - as described on hub.docker.com regenerates Dockerfile from other images. So you can use it as follows:
docker pull chenzj/dfimage
alias dfimage="docker run -v /var/run/docker.sock:/var/ru...
Using the rJava package on Win7 64 bit with R
...
Update (July 2018):
The latest CRAN version of rJava will find the jvm.dll automatically, without manually setting the PATH or JAVA_HOME. However note that:
To use rJava in 32-bit R, you need Java for Windows x86
To use rJava in 64-bit...
Remap values in pandas column with a dict
... Here is one that works with the current version of pandas (0.23.4 as of 8/2018):
import pandas as pd
df = pd.DataFrame({'col1': [1, 2, 2, 3, 1],
'col2': ['negative', 'positive', 'neutral', 'neutral', 'positive']})
conversion_dict = {'negative': -1, 'neutral': 0, 'positive': 1}
df['co...
Why is MATLAB so fast in matrix multiplication?
...=
0.0324
>> gputimeit(@()gA*gA)
ans =
0.0022
Update using R2018b on a WIN64 machine with 16 physical cores and a Tesla V100:
>> timeit(@()A*A)
ans =
0.0229
>> gputimeit(@()gA*gA)
ans =
4.8019e-04
(NB: at some point (I forget when exactly) gpuArray switched from ...
How to detect if app is being built for device or simulator in Swift
...
Updated Info as of February 20, 2018
It looks like @russbishop has an authoritative answer that renders this answer "incorrect" - even though it appeared to work for a long time.
Detect if app is being built for device or simulator in Swift
Previous Answ...