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Detecting an “invalid date” Date instance in JavaScript
...d
} else {
// date is valid
}
} else {
// not a date
}
Update [2018-05-31]: If you are not concerned with Date objects from other JS contexts (external windows, frames, or iframes), this simpler form may be preferred:
function isValidDate(d) {
return d instanceof Date && !isNa...
Check if an element is present in an array [duplicate]
...the index position in this array at which to begin searching)
As of JULY 2018, this has been implemented in almost all major browsers, if you need to support IE a polyfill is available.
Edit: Note that this returns false if the item in the array is an object. This is because similar objects are t...
try {} without catch {} possible in JavaScript?
...ed optional catch binding and was implemented in V8 v6.6, released in June 2018. The feature has been available since Node 10, Chrome 66, Firefox 58, Opera 53 and Safari 11.1.
The syntax is shown below:
try {
throw new Error("This won't show anything");
} catch { };
You still need a...
How to use the PI constant in C++
...
As of 2018, The answer should definetely be updated to use <cmath> instead of <math.h>
– jaskmar
Dec 9 '18 at 11:11
...
How do I move to end of line in Vim?
...erminal. Hope it will help someone.
For macOS users (tested on macbook pro 2018):
fn + ← - move to beginning line
fn + → - move to end line
fn + ↑ - move page up
fn + ↓ - move page down
fn + g - move the cursor to the beginning of the document
fn + shi...
How to remove application from app listings on Android Developer Console
...y/android-developer/answer/9023647
Updates to reports
In late May 2018, you may begin to see changes in
your app's metrics based on your users' deletion of data. Some metrics
are calculated based on data from users who have agreed to share their
data with developers in aggregate.
...
Node.js check if file exists
...
Upvoted, this is definitely the most modern (2018) way to detect if a file exists in Node.js
– AKMorris
Feb 15 '18 at 22:00
1
...
Xcode Simulator: how to remove older unneeded devices?
...
October 2018 update
As was mentioned, you can use xcrun to do a few things:
xcrun simctl list devices or xcrun simctl list --json to list all simulators
xcrun simctl delete <device udid> to delete specific device
xcrun simctl ...
How can I give eclipse more memory than 512M?
...args -Xms1536m -Xmx2048m -XX:MaxPermSize=1024m
on Eclipse Java Photon June 2018
Running Windows 10, 8 GB ram and 64 bit.
You can extend -Xmx2048 -XX:MaxpermSize= 1024m to 4096m too, if your computer has good ram.Mine worked well.
...
How do I format a date with Dart?
...day","dayoftheweek",etc..]
void main() {
DateTime now = new DateTime(2018,6,26);
print(date(now));
}
String date(DateTime tm) {
DateTime today = new DateTime.now();
Duration oneDay = new Duration(days: 1);
Duration twoDay = new Duration(days: 2);
Dura...