parallelism and distributed computation • Lightweight "green" threading (coroutines) • Unobtrusive yet powerful type system • Elegant and extensible conversions and promotions for numeric and other types • including but not limited to UTF-8 • Call C functions directly (no wrappers or special APIs needed) • Powerful shell-like capabilities for managing other processes • Lisp-like macros and other metaprogramming 16 Do-Block Syntax for Function Arguments Passing functions as arguments to other functions is a powerful technique, but the syntax for it is not always convenient. Such calls are especially awkward to

parallelism and distributed computation • Lightweight "green" threading (coroutines) • Unobtrusive yet powerful type system • Elegant and extensible conversions and promotions for numeric and other types • including but not limited to UTF-8 • Call C functions directly (no wrappers or special APIs needed) • Powerful shell-like capabilities for managing other processes • Lisp-like macros and other metaprogramming 16 Do-Block Syntax for Function Arguments Passing functions as arguments to other functions is a powerful technique, but the syntax for it is not always convenient. Such calls are especially awkward to

parallelism and distributed computation • Lightweight "green" threading (coroutines) • Unobtrusive yet powerful type system • Elegant and extensible conversions and promotions for numeric and other types • including but not limited to UTF-8 • Call C functions directly (no wrappers or special APIs needed) • Powerful shell-like capabilities for managing other processes • Lisp-like macros and other metaprogramming 16 Do-Block Syntax for Function Arguments Passing functions as arguments to other functions is a powerful technique, but the syntax for it is not always convenient. Such calls are especially awkward to

parallelism and distributed computation • Lightweight "green" threading (coroutines) • Unobtrusive yet powerful type system • Elegant and extensible conversions and promotions for numeric and other types • including but not limited to UTF-8 • Call C functions directly (no wrappers or special APIs needed) • Powerful shell-like capabilities for managing other processes • Lisp-like macros and other metaprogramming 16 Do-Block Syntax for Function Arguments Passing functions as arguments to other functions is a powerful technique, but the syntax for it is not always convenient. Such calls are especially awkward to

parallelism and distributed computation • Lightweight "green" threading (coroutines) • Unobtrusive yet powerful type system • Elegant and extensible conversions and promotions for numeric and other types • including but not limited to UTF-8 • Call C functions directly (no wrappers or special APIs needed) • Powerful shell-like capabilities for managing other processes • Lisp-like macros and other metaprogramming 16 Do-Block Syntax for Function Arguments Passing functions as arguments to other functions is a powerful technique, but the syntax for it is not always convenient. Such calls are especially awkward to

parallelism and distributed computation • Lightweight "green" threading (coroutines) • Unobtrusive yet powerful type system • Elegant and extensible conversions and promotions for numeric and other types • including but not limited to UTF-8 • Call C functions directly (no wrappers or special APIs needed) • Powerful shell-like capabilities for managing other processes • Lisp-like macros and other metaprogramming 16 Do-Block Syntax for Function Arguments Passing functions as arguments to other functions is a powerful technique, but the syntax for it is not always convenient. Such calls are especially awkward to

parallelism and distributed computation • Lightweight "green" threading (coroutines) • Unobtrusive yet powerful type system • Elegant and extensible conversions and promotions for numeric and other types • including but not limited to UTF-8 • Call C functions directly (no wrappers or special APIs needed) • Powerful shell-like capabilities for managing other processes • Lisp-like macros and other metaprogramming 16 Do-Block Syntax for Function Arguments Passing functions as arguments to other functions is a powerful technique, but the syntax for it is not always convenient. Such calls are especially awkward to

parallelism and distributed computation • Lightweight "green" threading (coroutines) • Unobtrusive yet powerful type system • Elegant and extensible conversions and promotions for numeric and other types • including but not limited to UTF-8 • Call C functions directly (no wrappers or special APIs needed) • Powerful shell-like capabilities for managing other processes • Lisp-like macros and other metaprogramming 16 Do-Block Syntax for Function Arguments Passing functions as arguments to other functions is a powerful technique, but the syntax for it is not always convenient. Such calls are especially awkward to

parallelism and distributed computation • Lightweight "green" threading (coroutines) • Unobtrusive yet powerful type system • Elegant and extensible conversions and promotions for numeric and other types • including but not limited to UTF-8 • Call C functions directly (no wrappers or special APIs needed) • Powerful shell-like capabilities for managing other processes • Lisp-like macros and other metaprogramming 16 Do-Block Syntax for Function Arguments Passing functions as arguments to other functions is a powerful technique, but the syntax for it is not always convenient. Such calls are especially awkward to

parallelism and distributed computation • Lightweight "green" threading (coroutines) • Unobtrusive yet powerful type system • Elegant and extensible conversions and promotions for numeric and other types • including but not limited to UTF-8 • Call C functions directly (no wrappers or special APIs needed) • Powerful shell-like capabilities for managing other processes • Lisp-like macros and other metaprogramming 16 Do-Block Syntax for Function Arguments Passing functions as arguments to other functions is a powerful technique, but the syntax for it is not always convenient. Such calls are especially awkward to