## Recommended Posts

Exercise 1: Create an array @x such that changing \$x[0] also sets

\$x[1] to the same value

Exercise 2: Given a pre-declared function "foo", write a code snippet

that invokes it in an infinite loop; in 10 chars

Exercise 3a: Create \$foo such that \$foo->[1] == \$foo->{1}

Exercise 3b: Create \$foo such that \$foo->[1] == \$foo->(1)

You must use different solutions for the two

Exercise 4: Dump core in 6 chars

Exercise 5: Create a static variable lexically scoped to a sub, and

no wider than that. It's ok if it blows up under recursion

Exercise 6: Create \$x, \$y such that \$x eq \$y && \$\$x ne \$\$y

Exercise 7: Create \$foo such that fileno(\$foo) && !*\$foo

Exercise 8: Create \$foo such that (\$foo^=0)++ eq \$foo++

Exercise 9a: Create \$foo such that eval(q[\$\$foo]) != eval(q[0+\$\$foo])

Exercise 9b: Create \$foo such that eval(q[\$\$foo =~ / /]) && !\$\$foo

Exercise 10: Make \$x::y::x::y::y::x::y::x::x::y::y::y::y::x::y::y true

in 26 chars of code

Exercise 11: Make <STDOUT> eq <+STDOUT> in 25 chars

Bonus Exercise: The code snippet 'sub foo{} goto +foo' produces an

error: "Can't find label SCALAR(0x31c70c)" (the address may vary)

Where does that ref come from? What does it point to?

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