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Generate random string/characters in JavaScript
...generateId :: Integer -> String
function generateId (len) {
var arr = new Uint8Array((len || 40) / 2)
window.crypto.getRandomValues(arr)
return Array.from(arr, dec2hex).join('')
}
console.log(generateId())
// "82defcf324571e70b0521d79cce2bf3fffccd69"
console.log(generateId(20))
// "c1a050...
Moving multiple files in TFS Source Control
...io commandline - it can handle wildcards:
tf.exe move <olditem> <newitem>
Example:
tf.exe move "$/My Project/V*" "$/My Project/Archive"
[EDIT] As noted in the comments: move is an alias for rename. Both commands move history.
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Chrome Extension how to send data from content script to popup.html
... this has been asked in numerous posts but honestly I don't get them. I am new to JavaScript, Chrome Extensions and everything and I have this class assignment.
So I need to make a plugin that would count DOM objects on any given page using Cross Domain Requests.
I've been able to achieve this so f...
What is mattr_accessor in a Rails module?
...unction () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f185573%2fwhat-is-mattr-accessor-in-a-rails-module%23new-answer', 'question_page');
}
);
...
Assigning code to a variable
...
You could assign it to an Action like this:
var ButtonClicked = new Action(() => MessageBox.Show("hi"));
Then call it:
ButtonClicked();
For completeness (in regards to the various comments)...
As Erik stated, you could execute multiple lines of code:
var ButtonClicked = new Acti...
Passing Data between View Controllers
I'm new to iOS and Objective-C and the whole MVC paradigm and I'm stuck with the following:
46 Answers
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generate days from date range
...bers (and thus about 274 years worth of dates), it runs in 0.0458 sec.
Incidentally, this is a very portable technique that works with most databases with minor adjustments.
SQL Fiddle example returning 1,000 days
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iOS White to Transparent Gradient Layer is Gray
... based on light/dark mode in iOS 13 that this approach also works with the new system colors:
gradientLayer.colors = [
UIColor.systemBackground.cgColor,
UIColor.systemBackground.withAlphaComponent(0).cgColor]
shar...
Finding duplicate rows in SQL Server
...tatement to grab all of these and the amount of dupes, but also return the ids that are associated with each organization.
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django order_by query set, ascending and descending
...
Reserved.objects.filter(client=client_id).order_by('-check_in')
Notice the - before check_in.
Django Documentation
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