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How to test which port MySQL is running on and whether it can be connected to?
...chine's own IP address and that 0.0.0.0 means the service is not available from anywhere. Do I have that wrong? I have a box running MySQL, the firewall has 3306 open from any IP address but MySQL is refusing the connection, I thought because currently MySQL is listening on 0.0.0.0.
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How do I get the filepath for a class in Python?
...ermine which file the class was defined in? I need something that can work from either the class C, or from an instance off C.
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do {…} while(false)
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@Paul: Nothing prevents you from adding braces around a bunch of statements to force this behavior with goto.
– erikkallen
Feb 23 '10 at 11:57
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WPF - How to force a Command to re-evaluate 'CanExecute' via its CommandBindings
...had the same problem happening when I was changing the content of a Texbox from the code-behind. If you edit it by hand it would work. In this app, they had the texbox being edited by a control that would popup, and when you saved the popup, it would change the Texbox.Text property. This solved the ...
Which cryptographic hash function should I choose?
.... Even though there are no known pre-image attacks to date on MD5 the line from the security experts is that MD5 should not be used where you need to defend against pre-image attacks. SAME goes for SHA1.
Keep in mind, not all algorithms need to defend against pre-image or collision attacks. Take t...
How to stop event propagation with inline onclick attribute?
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There are two ways to get the event object from inside a function:
The first argument, in a W3C-compliant browser (Chrome, Firefox, Safari, IE9+)
The window.event object in Internet Explorer (<=8)
If you need to support legacy browsers that don't follow the W3C...
Navigation bar show/hide
...wo consecutive taps, perhaps with CACurrentMediaTime(). Or test the result from [touch tapCount].
If you get two taps, your subclassed view issues an NSNotification that your view controller has registered to listen for.
When your view controller hears the notification, it fires a selector that eith...
PHP String to Float
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^worth noting that (float) removes 0 from string if it's the first digit
– user3608589
Jan 24 '17 at 12:47
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Access to Modified Closure (2)
This is an extension of question from Access to Modified Closure . I just want to verify if the following is actually safe enough for production use.
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socket.shutdown vs socket.close
...s to the other end of the connection there is no further intention to read from or write to the socket. Then close frees up any memory associated with the socket.
Omitting shutdown may cause the socket to linger in the OSs stack until the connection has been closed gracefully.
IMO the names 'shutd...