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How can I list ALL DNS records?
...less you control the zone. You'll usually conduct a zone transfer directly from the authoritative server (the @ns1.google.com below) and often from a name server that may not be published (a stealth name server).
# This will return "Transfer failed"
dig @ns1.google.com google.com axfr
If you have...
Read only file system on Android
...
adb shell <command> can be used from the computer (if you lack a terminal on your phone)
– Fletcher91
May 19 '14 at 8:38
add a comme...
Why does C# allow {} code blocks without a preceding statement?
..., does declaring a variable within a block cause the variable to be scoped from the perspective of the run-time? From what I can tell, variables' lifetimes are often not bounded by scoping blocks, a fact which is observable in mixed-language projects if the first thing done with a variable in a loo...
What's wrong with using == to compare floats in Java?
...e best answer so far, but it is still flawed. Where do you get the epsilon from?
– Michael Piefel
Apr 27 '15 at 15:34
1
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Abstract Class vs Interface in C++ [duplicate]
...structure code and behavior, and make it possible to client code to derive from this abstract class, overriding the pure virtual methods with some custom code, and complete this behavior with custom code.
Think for example of an infrastructure for an OpenGL application.
You can define an abstract cl...
Best practices to handle routes for STI subclasses in rails
... I had to set url explicitly in order for it to both render the from and saves properly. <%= form_for @child, :as => :child, url: @child.becomes(Parent)
– lulalala
May 28 '12 at 6:55
...
Easiest way to rename a model using Django/South?
...u increase the legacy weight of your codebase -- having class names differ from table names makes your code harder to understand and maintain. I fully support doing simple refactorings like this for the sake of clarity.
(update) I just tried this in production, and got a strange warning when I wen...
What is the canonical way to check for errors using the CUDA runtime API?
...n return either errors which occurred during the kernel execution or those from the memory copy itself. This can be confusing for the beginner, and I would recommend using explicit synchronisation after a kernel launch during debugging to make it easier to understand where problems might be arising....
Get an object's class name at runtime
...nstructor.name;
// OR return (this as any).constructor.name;
}
}
// From outside the class:
var className = (<any>new MyClass()).constructor.name;
// OR var className = (new MyClass() as any).constructor.name;
console.log(className); // Should output "MyClass"
// From inside the class:...
iOS difference between isKindOfClass and isMemberOfClass
... instance of the specified class or an instance of any class that inherits from the specified class.
isMemberOfClass: returns YES if, and only if, the receiver is an instance of the specified class.
Most of the time you want to use isKindOfClass: to ensure that your code also works with subclasses...