Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] s/// (substitution operator) delimiters scalar values Boolean values scalar variables assignment binary assignment operators interpolation undef scalar-producing expresisons, lists scalars context forcing list-producing expressions numbers floating-point literals format non-decimal integer literals scope of variables security taint checking sending signals shell, avoiding shift operator short-circuit operators signals, sending/receiving simple modules single-quoted string literals slices array slices hash slices sockets, networking and sort operator 2nd sort subroutine sorting hashes, by value multiple keys splice operator, arrays split operator sprintf function numbers and standard error stream (STDERR) standard input standard output 2nd stat function, file tests STDERR (standard error stream) strict pragma string repetition operator strings array interpolation to bit strings concatenation converting to/from numbers double-quoted string literals format string, conversions operators single-quoted string literals sort operator split operator substrings indexes and substr operator sub keyword subroutines ampersand and anonymous arguments passing calling defining modules parameter length position in file prototypes return operator return values sort subroutine variables, private substrings indexes and substr operator support symbolic links syntax extensions Sys::Hostname module system function System V IPC |