[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Z] s/// [See substitute operator] Salzenberg, Chip scalar context: grep selection expression range operator in; scalar m//g match 2nd 3rd Schwartzian Transform 2nd Schwartzian Transform: as example of slicing and nesting[Schwartzian Transform:example of slicing and nesting] scope: lexical of a my variable package run-time searching for methods select operator self variable; SelfLoader module sequence: in regular expression[sequence:regular expression]; 2nd 3rd setsockopt function: establishing multiple connections using; setuid: Perl program running as shareable library: XS module; shift operator: @_ as a default @ARGV as a default reading subroutine arguments with shorthands and syntax quirks 2nd shuffling a list SIGCHLD signal: handling to prevent zombie processes; 2nd signal handler hash: 'IGNORE' assignment to assignment to; signal handler: in eval block[signal handler:eval block] preventing zombie processes with 2nd reinstalling with POSIX signals[signal handler:POSIX signals] single-element slice: on left-hand side of assignment[single-element slice:left-hand side] single-element slice; single-quoted string single-quoted string: q; slice 2nd slice: [See also hash slice;] in computing ranks[slice:computing ranks] instead of element; is a list of elements[slice:list of elements] localizing with local; maintaining a queue with selecting elements from a result with; single-element. [See single-element slice] sorting with swapping elements with; slicing: multidimensional array or hash; with map [slicing:map] Socket module: always use constant functions in sorting Internet addresses with 2nd SOCKET_STREAM: in Socket module soft reference: accessing symbol table with; disabling with strict refs local variable and soft reference; software ICs 2nd sort block sort operator: basic use of uses string comparisons by default[sort operator:string comparisons] sort subroutine sort subroutine: called many times for each key modifying $a and $b in sorting 2nd sorting: ASCIIbetically by file modification time[sorting:file modification time] 2nd ignoring case; in reverse order[sorting:reverse order]; keys of a hash by corresponding values; on multiple keys[sorting:multiple keys] Orcish Maneuver Schwartzian Transform to obtain ranks[sorting:obtain ranks]; 2nd using array indices[sorting:array indices]; with pack[sorting:pack]; with split; spaceship operator spaceship operator: sorting with 2nd special variables : localizing with local; main package and speed: local * on arguments match variables memory-free parentheses my faster than local; of assignment and subscripting[speed:assignment and subscripting ] passing references into subroutines profiling with Devel::DProf run-time warnings and split vs. pattern match strict module and subroutine arguments writing XSUBs for splice operator: shortening array with shuffling a list with split operator: C comments delimiter retention mode; in literal slice[split operator:literal slice] lists of lists with; memory-free parentheses and; scalar context of arguments sorting with vs. pattern match[split operator:pattern match] vs. unpack[split operator:unpack]; sprintf operator formatting numbers with sprintf() stack snapshots: from -Dtls command line option stack: in XSUB[stack:XSUB] stat operator: result cached in _ vs. file test operators statement modifier: eliminating parentheses and braces with static variable: creating with BEGIN and my shared STDIN filehandle: as a default STORE method. [See under tied hash] stream: reading from; 2nd strict module: in examples[strict module:examples] recommended for debugging when to use strict refs: disables soft references 2nd strict subs: bareword quoting and turns off poetry mode strict vars: $a and $b 2nd catching misspellings with string comparison operators: instead of regular expressions look like words string context Stross, Charlie sub { } [See anonymous subroutine constructor] subroutine subroutine: argument checking; 2nd array arguments are flattened calling nonexistent containing BEGIN block context of return value copying and naming arguments DESTROY. [See See object-oriented programming: destructor] effect of my and local effect of my and local; exporting from XSUB followed by package name ; functionality computed at run time inheriting @_; named parameters parentheses around arguments of passing anonymous hash constructor passing array or hash by reference passing filehandles and dirhandles passing typeglob 2nd prefixed with ampersand prefixed with ampersand; prototype. [See prototypes ] reading arguments reference to. [See code ref] variable interpolation and subs module: declaring subroutines with subscript: in dereferencing syntax[subscript:dereferencing syntax] substitute operator: /e option /o option /x option containing <>; inside map; match variables in 2nd memory variables in substitute operator[regular expression: ] substr operator: as lvalue; instead of regular expression 2nd reference to result of tokenizing strings with SUPER:: package: data inheritance and; inheritance list for current package; SV: C data type in XSUB internal data type 2nd sv_mortalcopy(); swapping: elements with a slice 2nd values with list assignments Swiss Army Chainsaw symbol table symbol table: accessing through soft reference accessing through typeglob entry for each unique identifier manipulating my variables and packages implemented with symbolic reference. [See soft reference] sysread operator: quickly reading a file with system error variable: numeric vs. string context; |