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New self vs. new static
... 5.3's late static bindings, refers to whatever class in the hierarchy you called the method on.
In the following example, B inherits both methods from A. The self invocation is bound to A because it's defined in A's implementation of the first method, whereas static is bound to the called class (a...
In log4j, does checking isDebugEnabled before logging improve performance?
... using Log4J in my application for logging. Previously I was using debug call like:
16 Answers
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Error installing mysql2: Failed to build gem native extension
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i have the same issue on windows 7..any ideas? the command above didnt work for me..
– femi
Apr 1 '11 at 16:15
38
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jQuery: Can I call delay() between addClass() and such?
...{
$(this).removeClass("error").dequeue();
});
The reason you need to call next or dequeue is to let jQuery know that you are done with this queued item and that it should move on to the next one.
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How to build an android library with Android Studio and gradle?
...uild. Now we are going to add the others. I put them in a directory, maybe call it deps, or subProjects. It doesn't really matter, but you will need to know where you put it. To tell Gradle where the projects are you are going to need to add them to the settings.gradle.
Directory Structure:
Projec...
What is difference between instantiating an object using new vs. without
...trast:
Time* t = new Time(12, 0, 0);
... allocates a block of memory by calling either ::operator new() or Time::operator new(), and subsequently calls Time::Time() with this set to an address within that memory block (and also returned as the result of new), which is then stored in t. As you kno...
Python vs Bash - In which kind of tasks each one outruns the other performance-wise? [closed]
...e files needed are and sets variables and command line parameters, finally calling the program. That's a shell's simplest use.
Linux as we know it however would hardly be Linux without the thousands of shell scripts that startup the system, respond to events, control execution priorities and compil...
Throw keyword in function's signature
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That's just what it comes down to, you probably just will end up with a call to terminate() and your program dying a quick but painful death.
The GOTWs conclusion is:
So here’s what seems to be the best advice we as a community have learned as of today:
Moral #1: Never write an exc...
Can you change what a symlink points to after it is created?
Does any operating system provide a mechanism (system call — not command line program) to change the pathname referenced by a symbolic link (symlink) — other than by unlinking the old one and creating a new one?
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Difference between __getattr__ vs __getattribute__
...ement them both, but I'm not sure why you would. __getattribute__ will be called for every access, and __getattr__ will be called for the times that __getattribute__ raised an AttributeError. Why not just keep it all in one?
– Ned Batchelder
Oct 11 '11 at 18:...