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Does a finally block run even if you throw a new Exception?
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Yes, the finally blocks always runs... except when:
The thread running the try-catch-finally block is killed or interrupted
You use System.exit(0);
The underlying VM is destroyed in some other way
The underlying hardware is unusable i...
What makes JNI calls slow?
I know that 'crossing boundaries' when making a JNI call in Java is slow.
3 Answers
3
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How does the C code that prints from 1 to 1000 without loops or conditional statements work?
...+ (&exit - &main)*0)(j+1);
Which is:
(&main)(j+1);
Which calls main with j+1.
If j == 1000, then the same lines comes out as:
(&main + (&exit - &main)*1)(j+1);
Which boils down to
(&exit)(j+1);
Which is exit(j+1) and leaves the program.
(&exit)(j+1) and...
内存管理内幕：动态分配的选择、折衷和实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...他程序使用。
实现这些需求的程序库称为 分配程序（allocators），因为它们负责分配和回收内存。程序的动态性越强，内存 管理就越重要，您的内存分配程序的选择也就更重要。让我们来了解可用于内存管理的不同方法，它...
Can you split a stream into two streams?
... @JoD It is thread-safe if heads and tails are thread-safe. Additionally, assuming the use of non-parallel streams, only the order is not guaranteed, so they are thread-safe. It's up to the programmer to fix concurrency issues, so this answer is perfectly suitable if the collections are threa...
How do I unbind “hover” in jQuery?
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Actually, the jQuery documentation has a more simple approach than the chained examples shown above (although they'll work just fine):
$("#myElement").unbind('mouseenter mouseleave');
As of jQuery 1.7, you are also able use $....
What is the difference between background and background-color
...specific example there's no difference in the result, since background actually is a shorthand for
background-color
background-image
background-position
background-repeat
background-attachment
background-clip
background-origin
background-size
Thus, besides the background-color, usin...
Size of character ('a') in C/C++
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In C, the type of a character constant like 'a' is actually an int, with size of 4 (or some other implementation-dependent value). In C++, the type is char, with size of 1. This is one of many small differences between the two languages.
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How do I run git log to see changes only for a specific branch?
...e/master branch. After running git-pull and git-log , the log will show all commits in the remote tracking branch as well as the current branch. However, because there were so many changes made to the remote branch, I need to see just the commits made to the current local branch.
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How to increase scrollback buffer size in tmux?
...t (at least temporarily) changing history-limit (though show-option (especially in 1.7 and later) can help with retrieving the current value so that you restore it later).
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