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Is there a HTML opposite to ?
...ag in HTML that will only display its content if JavaScript is enabled? I know <noscript> works the opposite way around, displaying its HTML content when JavaScript is turned off. But I would like to only display a form on a site if JavaScript is available, telling them why they can't use th...
IntelliJ does not show project folders
...new project, IDEA is constantly "this file isn't part of the project...". Now it all makes sense.
– Jared Kipe
Oct 10 '15 at 18:38
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List of Rails Model Types
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I think this might be a more accurate link, now api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/…
– Randy Burgess
Aug 12 '13 at 21:42
1...
Postgresql - change the size of a varchar column to lower length
...ne tries to update anything on that row it's going to reject it as too big now, at the point it goes to store the new version of the row. Hilarity ensues for the user.
VARCHAR is a terrible type that exists in PostgreSQL only to comply with its associated terrible part of the SQL standard. If you...
How do you get a string from a MemoryStream?
If I am given a MemoryStream that I know has been populated with a String , how do I get a String back out?
11 Answers...
Javascript swap array elements
...r belts:
Given the array arr = [1,2,3,4], you can swap values in one line now like so:
[arr[0], arr[1]] = [arr[1], arr[0]];
This would produce the array [2,1,3,4]. This is destructuring assignment.
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What does immutable mean?
...initial string?
Yes. Nothing can change the string once it is created. Now this doesn't mean that you can't assign a new string object to the str variable. You just can't change the current object that str references.
If the string was mutable, does that
mean the 2nd alert() would return ...
How to Correctly handle Weak Self in Swift Blocks with Arguments
...e closure use [weak self].
If self will never be nil in the closure use [unowned self].
If it's crashing when you use [unowned self] I would guess that self is nil at some point in that closure, which is why you had to go with [weak self] instead.
I really liked the whole section from the manual...
What is the difference between client-side and server-side programming?
...le. The <?php echo 42; ?> call resulted in the output "42", which is now in the spot where that code used to be.
This resulting HTML/JavaScript code is now sent to the client, where it gets evaluated. The alert call works, while the foo variable is not used anywhere.
All PHP code is executed...
File to byte[] in Java
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This now works on Android if targeting SDK version 26 and higher.
– JamesNWarner
Aug 9 '17 at 14:46
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