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Format date in a specific timezone
I'm using Moment.js to parse and format dates in my web app. As part of a JSON object, my backend server sends dates as a number of milliseconds from the UTC epoch (Unix offset).
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Make function wait until element exists
...
A more modern approach to waiting for elements:
while(!document.querySelector(".my-selector")) {
await new Promise(r => setTimeout(r, 500));
}
// now the element is loaded
Note that this code would need to be wrapped in an async fu...
What are named pipes?
...tain the credentials of the thing on the other end etc).
Unix named pipes appear as a special file in the filesystem and can be accessed with normal file IO commands including the shell. Windows ones don't, and need to be opened with a special system call (after which they behave mostly like a norm...
how to make a specific text on TextView BOLD
... This is the only option that will work if you are localizing your app.
– howettl
Apr 6 '17 at 22:51
Its a goo...
Remove all subviews?
When my app gets back to its root view controller, in the viewDidAppear: method I need to remove all subviews.
15 Answers...
Unable to export Apple production push SSL certificate in .p12 format
I am using Urban airship in my application for push notification. So, I need to download the push SSL certificate from Apple developer portal. After downloading, I added that in keychain access. But no private key was created for the certificate. When I tried to right click and export the certificat...
Handle ModelState Validation in ASP.NET Web API
...but same basic principle for XML):
HTTP/1.1 400 Bad Request
Content-Type: application/json; charset=utf-8
(some headers removed here)
["A value is required.","The field First is required.","Some custom errorm essage."]
You can of course construct your error object/list any way you like, for exam...
How should I validate an e-mail address?
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Don't use a reg-ex.
Apparently the following is a reg-ex that correctly validates most e-mails addresses that conform to RFC 2822, (and will still fail on things like "user@gmail.com.nospam", as will org.apache.commons.validator.routines.EmailVa...
How to export/import PuTTy sessions list?
...egistry Editor Version 5.00" | Out-File putty.reg
"" | Out-File putty.reg -Append
foreach ($reg in $registry) {
"[$reg]" | Out-File putty.reg -Append
foreach ($prop in $reg.property) {
$propval = $reg.GetValue($prop)
if ("".GetType().Equals($propval.GetType())) {
'"' + "$prop" + '...
How do I use .toLocaleTimeString() without displaying seconds?
...me. But never read back dates from UI elements. That should come from your app layer. And always test in Safari. They've been IE6-level jerks about the date object.
– Erik Reppen
Mar 30 '15 at 2:45
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