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It was written using C++ and implements ECMAScript as specified in ECMA-262, 5th edition.
V8 can be used by developers to simply compile and run JS code.
As an extra, it will also manage dynamic memory allocation for objects.
To ease development, V8 can easily be made to run as a standalone, or embedded with any C++ application.
Here are some key features of "V8":
Supported platforms:
· Windows (XP or newer)
· Mac OS X (10.5 or newer)
· Linux systems that use IA-32, x64, or ARM processors
What's New in This Release: [ read full changelog ]
· Don't set -m32 flag when compiling with Android ARM compiler.
· Restore the descriptor array before returning allocation failure.
· Lowered kMaxVirtualRegisters.
· Pull more recent gyp in 'make dependencies'.
· Made sure that the generic KeyedStoreIC changes length and element_kind atomically.
· Bumped number of allowed variables per scope to 65535, to address GWT.
· Support sourceURL for dynamically inserted scripts.
· Performance and stability improvements on all platforms.

Via: V8 3.14.1 (revision 12656)
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