diff options
Diffstat (limited to 'doc/gawk.info')
| -rw-r--r-- | doc/gawk.info | 741 |
1 files changed, 377 insertions, 364 deletions
diff --git a/doc/gawk.info b/doc/gawk.info index 2a190873..0c2c9597 100644 --- a/doc/gawk.info +++ b/doc/gawk.info @@ -10746,6 +10746,19 @@ they are not special: return SYMTAB[variable] *= amount } + You would use it like this: + + BEGIN { + answer = 10.5 + multiply("answer", 4) + print "The answer is", answer + } + + When run, this produces: + + $ gawk -f answer.awk + -| The answer is 42 + NOTE: In order to avoid severe time-travel paradoxes,(2) neither 'FUNCTAB' nor 'SYMTAB' is available as an element within the 'SYMTAB' array. @@ -33036,7 +33049,7 @@ Index * dark corner, field separators: Full Line Fields. (line 22) * dark corner, FILENAME variable: Getline Notes. (line 19) * dark corner, FILENAME variable <1>: Auto-set. (line 108) -* dark corner, FNR/NR variables: Auto-set. (line 344) +* dark corner, FNR/NR variables: Auto-set. (line 357) * dark corner, format-control characters: Control Letters. (line 18) * dark corner, format-control characters <1>: Control Letters. (line 93) @@ -33593,7 +33606,7 @@ Index (line 12) * FNR variable: Records. (line 6) * FNR variable <1>: Auto-set. (line 118) -* FNR variable, changing: Auto-set. (line 344) +* FNR variable, changing: Auto-set. (line 357) * for statement: For Statement. (line 6) * for statement, looping over arrays: Scanning an Array. (line 20) * fork() extension function: Extension Sample Fork. @@ -34247,7 +34260,7 @@ Index * not Boolean-logic operator: Boolean Ops. (line 6) * NR variable: Records. (line 6) * NR variable <1>: Auto-set. (line 143) -* NR variable, changing: Auto-set. (line 344) +* NR variable, changing: Auto-set. (line 357) * null strings: awk split records. (line 114) * null strings <1>: Regexp Field Splitting. (line 43) @@ -34846,7 +34859,7 @@ Index (line 106) * sidebar, Changing FS Does Not Affect the Fields: Full Line Fields. (line 14) -* sidebar, Changing NR and FNR: Auto-set. (line 342) +* sidebar, Changing NR and FNR: Auto-set. (line 355) * sidebar, Controlling Output Buffering with system(): I/O Functions. (line 164) * sidebar, Escape Sequences for Metacharacters: Escape Sequences. @@ -35466,365 +35479,365 @@ Node: Exit Statement438161 Node: Built-in Variables440564 Node: User-modified441697 Node: Auto-set449283 -Ref: Auto-set-Footnote-1463670 -Ref: Auto-set-Footnote-2463876 -Node: ARGC and ARGV463932 -Node: Pattern Action Summary468145 -Node: Arrays470575 -Node: Array Basics471904 -Node: Array Intro472748 -Ref: figure-array-elements474723 -Ref: Array Intro-Footnote-1477427 -Node: Reference to Elements477555 -Node: Assigning Elements480019 -Node: Array Example480510 -Node: Scanning an Array482269 -Node: Controlling Scanning485291 -Ref: Controlling Scanning-Footnote-1490690 -Node: Numeric Array Subscripts491006 -Node: Uninitialized Subscripts493190 -Node: Delete494809 -Ref: Delete-Footnote-1497561 -Node: Multidimensional497618 -Node: Multiscanning500713 -Node: Arrays of Arrays502304 -Node: Arrays Summary507071 -Node: Functions509164 -Node: Built-in510202 -Node: Calling Built-in511283 -Node: Numeric Functions513279 -Ref: Numeric Functions-Footnote-1518112 -Ref: Numeric Functions-Footnote-2518469 -Ref: Numeric Functions-Footnote-3518517 -Node: String Functions518789 -Ref: String Functions-Footnote-1542293 -Ref: String Functions-Footnote-2542421 -Ref: String Functions-Footnote-3542669 -Node: Gory Details542756 -Ref: table-sub-escapes544547 -Ref: table-sub-proposed546066 -Ref: table-posix-sub547429 -Ref: table-gensub-escapes548970 -Ref: Gory Details-Footnote-1549793 -Node: I/O Functions549947 -Ref: table-system-return-values556529 -Ref: I/O Functions-Footnote-1558509 -Ref: I/O Functions-Footnote-2558657 -Node: Time Functions558777 -Ref: Time Functions-Footnote-1569282 -Ref: Time Functions-Footnote-2569350 -Ref: Time Functions-Footnote-3569508 -Ref: Time Functions-Footnote-4569619 -Ref: Time Functions-Footnote-5569731 -Ref: Time Functions-Footnote-6569958 -Node: Bitwise Functions570224 -Ref: table-bitwise-ops570818 -Ref: Bitwise Functions-Footnote-1575156 -Node: Type Functions575329 -Node: I18N Functions577990 -Node: User-defined579641 -Node: Definition Syntax580446 -Ref: Definition Syntax-Footnote-1586133 -Node: Function Example586204 -Ref: Function Example-Footnote-1589126 -Node: Function Caveats589148 -Node: Calling A Function589666 -Node: Variable Scope590624 -Node: Pass By Value/Reference593618 -Node: Return Statement597117 -Node: Dynamic Typing600096 -Node: Indirect Calls601026 -Ref: Indirect Calls-Footnote-1611277 -Node: Functions Summary611405 -Node: Library Functions614110 -Ref: Library Functions-Footnote-1617717 -Ref: Library Functions-Footnote-2617860 -Node: Library Names618031 -Ref: Library Names-Footnote-1621491 -Ref: Library Names-Footnote-2621714 -Node: General Functions621800 -Node: Strtonum Function622903 -Node: Assert Function625925 -Node: Round Function629251 -Node: Cliff Random Function630792 -Node: Ordinal Functions631808 -Ref: Ordinal Functions-Footnote-1634871 -Ref: Ordinal Functions-Footnote-2635123 -Node: Join Function635333 -Ref: Join Function-Footnote-1637103 -Node: Getlocaltime Function637303 -Node: Readfile Function641045 -Node: Shell Quoting643017 -Node: Data File Management644418 -Node: Filetrans Function645050 -Node: Rewind Function649146 -Node: File Checking651051 -Ref: File Checking-Footnote-1652385 -Node: Empty Files652586 -Node: Ignoring Assigns654565 -Node: Getopt Function656115 -Ref: Getopt Function-Footnote-1667584 -Node: Passwd Functions667784 -Ref: Passwd Functions-Footnote-1676623 -Node: Group Functions676711 -Ref: Group Functions-Footnote-1684608 -Node: Walking Arrays684815 -Node: Library Functions Summary687823 -Node: Library Exercises689229 -Node: Sample Programs689694 -Node: Running Examples690464 -Node: Clones691192 -Node: Cut Program692416 -Node: Egrep Program702345 -Ref: Egrep Program-Footnote-1709857 -Node: Id Program709967 -Node: Split Program713647 -Ref: Split Program-Footnote-1717106 -Node: Tee Program717235 -Node: Uniq Program720025 -Node: Wc Program727451 -Ref: Wc Program-Footnote-1731706 -Node: Miscellaneous Programs731800 -Node: Dupword Program733013 -Node: Alarm Program735043 -Node: Translate Program739898 -Ref: Translate Program-Footnote-1744463 -Node: Labels Program744733 -Ref: Labels Program-Footnote-1748084 -Node: Word Sorting748168 -Node: History Sorting752240 -Node: Extract Program754075 -Node: Simple Sed761604 -Node: Igawk Program764678 -Ref: Igawk Program-Footnote-1779009 -Ref: Igawk Program-Footnote-2779211 -Ref: Igawk Program-Footnote-3779333 -Node: Anagram Program779448 -Node: Signature Program782510 -Node: Programs Summary783757 -Node: Programs Exercises784971 -Ref: Programs Exercises-Footnote-1789100 -Node: Advanced Features789191 -Node: Nondecimal Data791181 -Node: Array Sorting792772 -Node: Controlling Array Traversal793472 -Ref: Controlling Array Traversal-Footnote-1801839 -Node: Array Sorting Functions801957 -Ref: Array Sorting Functions-Footnote-1807048 -Node: Two-way I/O807244 -Ref: Two-way I/O-Footnote-1813794 -Ref: Two-way I/O-Footnote-2813981 -Node: TCP/IP Networking814063 -Node: Profiling817181 -Ref: Profiling-Footnote-1825674 -Node: Advanced Features Summary825997 -Node: Internationalization827841 -Node: I18N and L10N829321 -Node: Explaining gettext830008 -Ref: Explaining gettext-Footnote-1835031 -Ref: Explaining gettext-Footnote-2835216 -Node: Programmer i18n835381 -Ref: Programmer i18n-Footnote-1840236 -Node: Translator i18n840285 -Node: String Extraction841079 -Ref: String Extraction-Footnote-1842211 -Node: Printf Ordering842297 -Ref: Printf Ordering-Footnote-1845083 -Node: I18N Portability845147 -Ref: I18N Portability-Footnote-1847603 -Node: I18N Example847666 -Ref: I18N Example-Footnote-1850472 -Node: Gawk I18N850545 -Node: I18N Summary851190 -Node: Debugger852531 -Node: Debugging853553 -Node: Debugging Concepts853994 -Node: Debugging Terms855803 -Node: Awk Debugging858378 -Node: Sample Debugging Session859284 -Node: Debugger Invocation859818 -Node: Finding The Bug861204 -Node: List of 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