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Comparison of programming languages
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Programming languages are used for controlling the behavior of a machine (often a computer). Like natural languages, programming languages follow rules for syntax and semantics.

There are thousands of programming languages and new ones are created every year. Few languages ever become sufficiently popular that they are used by more than a few people, but professional programmers may use dozens of languages in a career.

Most programming languages are not standardized by an international (or national) standard, even widely used ones, such as Perl or Standard ML (despite the name). Notable standardized programming languages include ALGOL, C, C++, JavaScript (under the name ECMAScript), Smalltalk, Prolog, Common Lisp, Scheme (IEEE standard), ISLISP, Ada, Fortran, COBOL, SQL, and XQuery.

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General comparison

The following table compares general and technical information for a selection of commonly used programming languages. See the individual languages' articles for further information.

LanguageOriginal purposeImperativeObject-orientedFunctionalProceduralGenericReflectiveOther paradigmsStandardized
1C:Enterprise programming languageApplication, RAD, business, general, web, mobileYesNoYesYesYesYesObject-based, Prototype-based programmingNo
ActionScriptApplication, client-side, webYesYesYesYesNoNoprototype-basedYes1999-2003, ActionScript 1.0 with ES3, ActionScript 2.0 with ES3 and partial ES4 draft, ActionScript 3.0 with ES4 draft, ActionScript 3.0 with E4X
AdaApplication, embedded, realtime, systemYesYes2NoYes3Yes4NoConcurrent,5 distributed6Yes1983, 2005, 2012, ANSI, ISO, GOST 27831-887
AldorHighly domain-specific, symbolic computingYesYesYesNoNoNoNo
ALGOL 58ApplicationYesNoNoNoNoNoNo
ALGOL 60ApplicationYesNoNoYesYesNoYes1960, IFIP WG 2.1, ISO8
ALGOL 68ApplicationYesNoYesYesYesNoConcurrentYes1968, IFIP WG 2.1, GOST 27974-88,9
Ateji PXParallel applicationNoYesNoNoNoNopi calculusNo
APLApplication, data processingYesYesYesYesYesYesArray-oriented, tacitYes1989, ISO
Assembly languageGeneralYesNoNoNoNoNoAny, syntax is usually highly specific, related to the target processorYes1985 IEEE 694-198510
AutoHotkeyGUI automation (macros), highly domain-specificYesYes11NoYesNoNoNo
AutoItGUI automation (macros), highly domain-specificYesNoNoYesNoNoNo
BallerinaIntegration, agile, server-side, generalYesYesYesYesNoNoConcurrent, transactional, statically and strongly typed, diagrammatic–visualDe factostandard via Ballerina Language Specification12
BashShell, scriptingYesNoNoYesNoNoOptionallyPOSIX.213
BASICApplication, educationYesNoNoYesNoNoYes1983, ANSI, ISO, ECMA
BeanShellApplication, scriptingYesYesYesNoNoYesNoIn progress, JCP14
BLISSSystemNoNoNoYesNoNoNo
BlitzMaxApplication, gameYesYesNoYesNoYesNo
BooApplication, game scriptingNoYesNoNoNoNoNo
CApplication, system,15 general purpose, low-level operationsYesNoNoYesNoNoYes1989, ANSI C89, ISO/IEC C90, ISO/IEC C95, ISO/IEC C99, ISO/IEC C11, ISO/IEC C17, ISO/IEC C2x16
C++Application, systemYesYesYesYesYesNoYes1998, ISO/IEC C++98, ISO/IEC C++03, ISO/IEC C++11, ISO/IEC C++14, ISO/IEC C++17, ISO/IEC C++20, ISO/IEC C++2317
C#Application, RAD, business, client-side, general, server-side, web, game programmingYesYesYes18YesYesYesStructured, concurrentYes2000, ECMA, ISO19
ClarionGeneral, business, webYesYesYes20NoNoNoUn­known
CleanGeneralNoNoYesNoYesNoNo
ClojureGeneralNoNoYesNoNoNoConcurrentNo
CLUGeneralYesYesNoYesYesNoNo
COBOLApplication, businessYesYesNoYesNoNoYes1968 ANSI X3.23, 1974, 1985; ISO/IEC 1989:1985, 2002, 2014, 2023
CobraApplication, business, general, webYesYesYesNoYesYesNo
ColdFusion (CFML)WebNoYesNoYesNoNoNo
Common LispGeneralYesYesYesYesYesYesExtensible syntax, Array-oriented, syntactic macros, multiple dispatch, concurrentYes1994, ANSI
COMAL 80EducationYesNoNoYesNoNoNo
CrystalGeneral purposeYesYes21YesYesYes22NoConcurrent23No
CurryApplicationNoNoYesNoYesNolazy evaluation, non-determinismDe factostandard via Curry Language Report
CythonApplication, general, numerical computingYesYesYesNoNoYesAspect-orientedNo
DApplication, systemYesYesYesYesYesYesGenerative, concurrentNo
DartApplication, web, server-side, mobile, IoTYesYesYesYesYesNoStructuredYesECMA-408 standard
Delphi, Object PascalGeneral purposeYesYesYesYesYesYesUn­known
DylanApplicationNoYesYesNoNoNoNo
EiffelGeneral, application, business, client-side, server-side, web (EWF)YesYesYes2425NoYesYes Erl-GDistributed SCOOP, Void-safeYes2005, ECMA, ISO26
ELANEducationYesNoNoYesNoNoStructured, stepwise refinementNo
ElixirApplication, distributedNoNoYesNoNoYesConcurrent, distributedNo
ErlangApplication, distributedNoNoYesNoNoYesConcurrent, distributedNo
EuphoriaApplicationNoNoNoYesNoYesNo
FactorGeneralYesNoCan be viewed asNoYesYesStack-orientedNo
FPNoNoYesNoNoNoNo
F#ApplicationYesYesYesYesYesYesNo
ForthGeneralYesNoNoYesNoYesStack-orientedYes1994, ANSI
FortranApplication, numerical computingYesYesYesYesYesNoArray-based, vectorized, concurrent, native distributed/shared-memory parallelismYes1966, ANSI 66, ANSI 77, MIL-STD-1753, ISO 90, ISO 95, ISO 2003, ISO/IEC 1539-1:2010 (2008), ISO/IEC JTC1/SC22/WG5 N2145 (2018)
FreeBASICApplication, numerical computingYesYesNoYesYesNoNo
GambasApplicationYesYesNoNoNoNoNo
Game Maker LanguageApplication, game programmingYesYesNoNoNoNoNo
GLBasicApplication, gamesYesYesNoYesNoNoSimple object-orientedNo
GoApplication, web, server-sideYesCan be viewed as27Can be viewed as28YesYesYesConcurrentDe factostandard via Go Language Specification
GosuApplication, general, scripting, webYesYesNoNoYesYesNo
GraphTalkApplicationNoYesNoNoNoNoLogicNo
GroovyApplication, general, scripting, webYesYesYesYesYesYesMeta-programmingNoIn progress, JCP29
HarbourApplication, business, data processing, general, webYesYesYesYesYesYesDeclarativeNo
HaskellApplicationNoNoYesNoYesNoLazy evaluationYes2010, Haskell 201030
HaxeApplication, general, webYesYesYesNoYesYesNo
HyperTalkApplication, RAD, generalYesNoNoYesNoYesWeakly typedUn­known
IoApplication, host-driven scriptingYesYesNoNoNoNoNo
IPLGeneralNoNoYesNoNoNoUn­known
ISLISPGeneralYesYesYesNoYesNoYes1997, 2007, ISO
JApplication, data processingYesYesYesYesYesYesArray-oriented, function-level, tacit, concurrentNo
JADEApplication, distributedYesYesNoNoNoNoNo
JavaApplication, business, client-side, general, mobile development, server-side, webYesYesYesYesYesYesConcurrentDe factostandard via Java Language Specification
JavaScriptClient-side, server-side, webYesYesYesYesNoYesprototype-basedYesECMA-262 standard
JoyResearchNoNoYesNoNoNoStack-orientedNo
jq"awk for JSON"NoNoYesNoNoNoTacit, Backtracking, Streaming, PEGNo
JuliaGeneral, technical computingYesNoYesYesYesYesMultiple dispatch, meta, scalar and array-oriented, parallel, concurrent, distributed ("cloud")No
KData processing, businessNoNoNoNoNoNoArray-oriented, tacitUn­known
KotlinApplication, mobile development, server-side, client-side, webYesYesYesYesYesYes31De factostandard via Kotlin Language Specification
KshShell, scriptingYesYesNoYesNoNoSeveral variants, custom programmable, dynamic loadable modulesOptionallyPOSIX.232
LabVIEW (G)Application, industrial instrumentation-automationYesYesYesNoNoNoDataflow, visualNo
LispGeneralNoNoYesNoNoNoUn­known
LiveCodeApplication, RAD, generalYesYesNoYesNoYesWeakly typedNo
LogtalkArtificial intelligence, applicationNoYesNoNoNoYesLogicNo
Linden Scripting Language (LSL)Virtual worlds content scripting and animationYesNoNoYesNoNoScripts exist in in-world objectsDe factoreference is the Second Life implementation of LSL.33
LuaApplication, embedded scriptingYesYes34YesYesNoYesAspect-oriented, prototype-basedNo35
MapleSymbolic computation, numerical computingYesYesYesYesNoNoDistributedNo
MathematicaSymbolic languageYesYesYesYesYesYesLogic, distributedNo
MATLABHighly domain-specific, numerical computingYesYesNoYesNoNoNo
Modula-2Application, systemYesNoNoNoYesNoYes1996, ISO36
Modula-3ApplicationYesYesNoNoYesNoNo
MUMPS (M)General, application, databasesYesApproved for next StandardNoYesPartially Thru Indirection and XecuteYesConcurrent, multi-user, NoSQL, transaction processingYes1977 ANSI, 1995, ISO 2020
NimApplication, general, web, scripting, systemYesYesYesYesYesYesMultiple dispatch, concurrent, metaNo
OberonApplication, systemYesYesNoNoNoNoNo
Object PascalApplication, general, mobile app, webYesYesNoYesYesYesStructuredNo
Objective-CApplication, generalYesYesNoYesNoYesConcurrentNo
OCamlApplication, generalYesYesYesYesYesNoNo
OccamGeneralYesNoNoYesNoNoConcurrent, process-orientedNo
OpaWeb applicationsYesNoYesNoYesNoDistributedNo
OpenLispGeneral, Embedded Lisp EngineYesYesYesNoYesNoOptionally ISLISP
OxygeneApplicationYesYesNoNoYesNoNo
Oz-MozartApplication, distribution, educationYesYesYesNoNoNoConcurrent, logicNo
PascalApplication, educationYesNoNoYesNoNoYes1983, ISO37
PerlApplication, scripting, text processing, WebYesYesYesYesYesYesNo
PHPServer-side, web application, webYesYes38Yes39YesNoYesDe factostandard via language specification and Requests for Comments (RFCs)
PL/IApplicationYesYesNoYesNoNoYes1969, ECMA-50 (1976)
PlusApplication, system developmentYesNoNoYesNoNoNo
PostScriptGraphics, page descriptionYesNoNoYesNoNoConcatenative, stack-orientedDe factostandard via the PostScript Reference Manual40
PowerShellAdministration, application, general, scriptingYesYesYesYesNoYesPipelineNo
PrologApplication, artificial intelligenceNoNoYesYesNoYesLogic, declarativeYes1995, ISO/IEC 13211-1:1995, TC1 2007, TC2 2012, TC3 2017
PureBasicApplicationYesNoNoYesNoNoNo
PythonApplication, general, web, scripting, artificial intelligence, scientific computingYesYesYesYesYesYesAspect-orientedDe factostandard via Python Enhancement Proposals (PEPs)
RApplication, statisticsYesYesYesYesNoYesNo
RacketEducation, general, scriptingYesYesYesYesNoYesModular, logic, metaNo
RakuScripting, text processing, glueYesYesYesYesYesYesAspect-oriented, array, lazy evaluation, multiple dispatch, metaprogrammingNo
REALbasicApplicationNoNoNoYesNoNoUn­known
RebolDistributedYesYesYesYesNoYesDialectedNo
REXXScriptingYesYes (NetRexx and Object REXX dialects)NoYesNoNoYes1996 (ANSI X3.274-1996)
RPGApplication, systemYesNoNoYesNoNoNo
RingApplicationYesYesYesYesYesYesmetaprogramming, declarative, natural-languageNo
RubyApplication, scripting, webYesYesYesNoNoYesAspect-orientedYes2011(JIS X 3017), 2012(ISO/IEC 30170)
RustApplication, server-side, system, webYesYes41YesYesYesNo42ConcurrentNo
SApplication, statisticsYesYesYesYesNoNoNo
S-LangApplication, numerical, scriptingYesNoNoYesNoNoNo
ScalaApplication, general, parallel, distributed, webYesYesYesNoYesYesData-oriented programming, metaprogrammingDe factostandard via Scala Language Specification (SLS)
SchemeEducation, generalYesNoYesNoNoNometa, extensible-syntaxDe facto1975-2013, R0RS, R1RS, R2RS, R3RS, R4RS, R5RS, R6RS, R7RS Small Edition4344
Seed7Application, general, scripting, webYesYesNoNoYesYesMulti-paradigm, extensible, structuredNo
SimulaEducation, generalYesYesNoNoNoNodiscrete event simulation, multi-threaded (quasi-parallel) program executionYes1968
Small BasicApplication, education, gamesYesNoNoNoNoNoComponent-orientedNo
SmalltalkApplication, general, business, artificial intelligence, education, webYesYesYesYesNoYesConcurrent, declarativeYes1998, ANSI
SNOBOLText processingNoNoNoNoNoNoUn­known
Standard MLApplicationYesNoYesNoYesNoYes1997, SML '9745
SwiftApplication, generalYesYesYesYesYesYesConcurrent, declarative, protocol-orientedNo
TclApplication, scripting, webYesYesYesYesNoYesNo
V (Vlang)Application, general, system, game, web, server-sideYesCan be viewed asCan be viewed asYesYesYesConcurrentNo
Visual BasicApplication, RAD, education, business, general, (Includes VBA), office automationYesYesNoYesYesNoComponent-orientedNo
Visual Basic .NETApplication, RAD, education, web, business, generalYesYesYesYesYesYesStructured, concurrentNo
Visual FoxProApplicationYesYesNoYesNoNoData-centric, logicNo
Visual PrologApplicationYesYesYesNoNoNoDeclarative, logicNo
Wolfram LanguageSymbolic languageYesNoYesYesYesYesLogic, distributedNo
XLYesYesNoNoNoNoconcept programmingNo
XojoApplication, RAD, general, webYesYesNoYesNoYesNo
XPath/XQueryDatabases, data processing, scriptingNoNoYesNoNoNoTree-orientedYes1999 W3C XPath 1, 2010 W3C XQuery 1, 2014 W3C XPath/XQuery 3.0
ZeekDomain-specific, applicationYesNoNoNoNoNoNo
ZigApplication, general, systemYesNoYesYesYesYesConcurrentNo
ZshShell, scriptingYesNoNoYesNoNoLoadable modulesOptionallyPOSIX.246

Type systems

Main article: Comparison of programming languages by type system

Failsafe I/O and system calls

Most programming languages will print an error message or throw an exception if an input/output operation or other system call (e.g., chmod, kill) fails, unless the programmer has explicitly arranged for different handling of these events. Thus, these languages fail safely in this regard.

Some (mostly older) languages require that programmers explicitly add checks for these kinds of errors. Psychologically, different cognitive biases (e.g., optimism bias) may affect novices and experts alike and lead them to skip these checks. This can lead to erroneous behavior.

Failsafe I/O is a feature of 1C:Enterprise, Ada (exceptions), ALGOL (exceptions or return value depending on function), Ballerina, C#, Common Lisp ("conditions and restarts" system), Curry, D (throwing on failure),47 Erlang, Fortran, Go (unless result explicitly ignored), Gosu, Harbour, Haskell, ISLISP, Java, Julia, Kotlin, LabVIEW, Mathematica, Objective-C (exceptions), OCaml (exceptions), OpenLisp, PHP, Python, Raku, Rebol, Rexx (with optional signal on... trap handling), Ring, Ruby, Rust (unless result explicitly ignored), Scala,48 Smalltalk, Standard ML , Swift ≥ 2.0 (exceptions), Tcl, Visual Basic, Visual Basic .NET, Visual Prolog, Wolfram Language, Xojo, XPath/XQuery (exceptions), and Zeek.

No Failsafe I/O: AutoHotkey (global ErrorLevel must be explicitly checked), C,49 COBOL, Eiffel (it actually depends on the library and it is not defined by the language), GLBasic (will generally cause program to crash), RPG, Lua (some functions do not warn or throw exceptions), and Perl.50

Some I/O checking is built in C++ (STL iostreams throw on failure but C APIs like stdio or POSIX do not)51 and Object Pascal, in Bash52 it is optional.

Expressiveness

LanguageStatements ratio53Lines ratio54
C11
C++2.51
Fortran20.8
Java2.51.5
Perl66
Smalltalk66.25
Python66.5

The literature on programming languages contains an abundance of informal claims about their relative expressive power, but there is no framework for formalizing such statements nor for deriving interesting consequences.55 This table provides two measures of expressiveness from two different sources. An additional measure of expressiveness, in GZip bytes, can be found on the Computer Language Benchmarks Game.56

Benchmarks

Benchmarks are designed to mimic a particular type of workload on a component or system. The computer programs used for compiling some of the benchmark data in this section may not have been fully optimized, and the relevance of the data is disputed. The most accurate benchmarks are those that are customized to your particular situation. Other people's benchmark data may have some value to others, but proper interpretation brings many challenges. The Computer Language Benchmarks Game site warns against over-generalizing from benchmark data, but contains a large number of micro-benchmarks of reader-contributed code snippets, with an interface that generates various charts and tables comparing specific programming languages and types of tests.57

Timeline of specific language comparisons

  • 1974 – Comparative Notes on Algol 68 and PL/I58 – S. H. Valentine – November 1974
  • 1976 – Evaluation of ALGOL 68, JOVIAL J3B, Pascal, Simula 67, and TACPOL Versus TINMAN – Requirements for a Common High Order Programming Language.
  • 1977 – A comparison of PASCAL and ALGOL 6859Andrew S. Tanenbaum – June 1977.
  • 1993 – Five Little Languages and How They Grew – BLISS, Pascal, ALGOL 68, BCPL & CDennis M. Ritchie – April 1993.
  • 2009 – On Go – oh, go on – How well will Google's Go stand up against Brand X programming language? – David Given – November 2009

See also

To display all pages, subcategories and images click on the "►":
Lists of programming languages (19 P) List of programming languages List of programming languages by type Lists of programming languages List of programming languages for artificial intelligence List of audio programming languages List of BASIC dialects List of C-family programming languages List of CLI languages List of concurrent and parallel programming languages List of educational programming languages Generational list of programming languages List of JVM languages List of Lisp-family programming languages List of open-source programming languages Non-English-based programming languages List of object-oriented programming languages List of reflective programming languages and platforms Timeline of programming languages Unisys MCP programming languages

Further reading

References

  1. As of May 2006 Diarmuid Pigott's Encyclopedia of Computer Languages Archived 2011-02-20 at the Wayback Machine hosted at Murdoch University, Australia lists 8512 computer languages. http://hopl.murdoch.edu.au/

  2. Ada Reference Manual, ISO/IEC 8652:2005(E) Ed. 3, 3.9 Tagged Types and Type Extensions http://www.adaic.org/standards/05rm/html/RM-TTL.html

  3. Ada Reference Manual, ISO/IEC 8652:2005(E) Ed. 3, Section 6: Subprograms http://www.adaic.org/standards/05rm/html/RM-TTL.html

  4. Ada Reference Manual, ISO/IEC 8652:2005(E) Ed. 3, Section 12: Generic Units http://www.adaic.org/standards/05rm/html/RM-TTL.html

  5. Ada Reference Manual, ISO/IEC 8652:2005(E) Ed. 3, Section 9: Tasks and Synchronization http://www.adaic.org/standards/05rm/html/RM-TTL.html

  6. Ada Reference Manual, ISO/IEC 8652:2005(E) Ed. 3 Annex E: Distributed Systems http://www.adaic.org/standards/05rm/html/RM-TTL.html

  7. "Vak.ru" (PDF). Archived from the original (PDF) on 2017-03-30. Retrieved 2008-08-09. https://web.archive.org/web/20170330020459/http://vak.ru/lib/exe/fetch.php/book/gost/pdf/gost-27831-88.pdf

  8. ISO 1538:1984 http://www.open-std.org/jtc1/sc22/docs/oldwgs/wg6.html

  9. "Vak.ru" (PDF). Archived from the original (PDF) on 2017-03-24. Retrieved 2008-08-09. https://web.archive.org/web/20170324231641/http://vak.ru/lib/exe/fetch.php/book/gost/pdf/gost-27974-88.pdf

  10. IEEE 694-1985 https://standards.ieee.org/ieee/694/950/

  11. Objects - Definition & Usage https://www.autohotkey.com/docs/Objects.htm

  12. "Ballerina Language Specification" (PDF). WSO2. 2018-05-01. Archived from the original (PDF) on 2018-05-04. Retrieved 2018-05-03. https://web.archive.org/web/20180504090305/https://ballerina.io/res/Ballerina-Language-Specification-WD-2015-05-01.pdf

  13. POSIX.2, Shell and Utilities, Command Interpreter (IEEE Std 1003.2-1992.) /wiki/POSIX.2

  14. JSR 274 http://jcp.org/en/jsr/detail?id=274

  15. bell-labs.com https://www.bell-labs.com/usr/dmr/www/chist.html

  16. ANSI C89, ISO/IEC 9899:1990, 1999, 2011, 2018 http://www.open-std.org/JTC1/SC22/WG14/

  17. ISO/IEC 14882:1998, 2003, 2011, 2014, 2017, 2020 http://www.open-std.org/JTC1/SC22/WG21/

  18. Codeproject.com: Functional Programming in C# 3.0 using Lambda Expression http://www.codeproject.com/KB/cs/intro_functional_csharp.aspx

  19. ECMA-334; ISO/IEC 23270:2006

  20. Softvelocity.com http://www.softvelocity.com

  21. "Crystal". GitHub. 2 November 2021. https://github.com/crystal-lang/crystal#why

  22. "Crystal Generics". crystal-lang.org. 13 April 2024. https://crystal-lang.org/reference/1.12/syntax_and_semantics/generics.html

  23. "Concurrency - Crystal". crystal-lang.org. Retrieved 2024-04-02. https://crystal-lang.org/reference/1.11/guides/concurrency.html

  24. Basic Eiffel language mechanisms http://se.ethz.ch/~meyer/publications/online/eiffel/basic.html#Agents:

  25. Closure (computer programming) /wiki/Closure_(computer_programming)#Inline_agents_.28Eiffel.29:

  26. ECMA-367; ISO/IEC 25436:2006

  27. The Go Programming Language (FAQ) https://golang.org/doc/faq#Is_Go_an_object-oriented_language

  28. "Codewalk: First-Class Functions in Go". Go supports first class functions, higher-order functions, user-defined function types, function literals, closures, and multiple return values. This rich feature set supports a functional programming style in a strongly typed language. https://go.dev/doc/codewalk/functions/

  29. JSR 241 http://jcp.org/en/jsr/detail?id=241

  30. "The Haskell 2010 Language Report". Retrieved 2011-12-07. Most Haskell implementations extend the Haskell 2010 standard. http://www.haskell.org/onlinereport/haskell2010/

  31. "M8 is out!". 2 July 2014. As a first peek into the future reflective capabilities of Kotlin, you can now access properties as first-class objects in Kotlin http://blog.jetbrains.com/kotlin/2014/07/m8-is-out/

  32. POSIX.2, Shell and Utilities, Command Interpreter (IEEE Std 1003.2-1992.) /wiki/POSIX.2

  33. Halcyon (Inworldz) and Open Sims propose compatible implementations with additional functions.

  34. Lua does not have explicit "object" type (more general type of "table" is used for object definition), but does have explicit syntax for object method calling

  35. Version releases are accompanied with a definitive Lua Reference Manual showing full syntax and semantics; a reference implementation, and a test suite. These are used to generate other Lua VM implementations and compilers such as Kahlua and LLVM-Lua. /wiki/Virtual_machine

  36. ISO/IEC 10514-1:1996

  37. ISO 7185

  38. PHP Manual, Chapter 19. Classes and Objects (PHP 5), http://php.net/manual/en/index.php

  39. PHP Manual, Chapter 17. Functions http://php.net/manual/en/index.php

  40. "PostScript Language Reference Manual" (PDF). Archived from the original (PDF) on 2017-02-18. Retrieved 2017-02-18. https://web.archive.org/web/20170218093716/https://www.adobe.com/products/postscript/pdfs/PLRM.pdf

  41. Is Rust an Object-Oriented Programming Language? https://doc.rust-lang.org/book/ch17-00-oop.html

  42. Klabnik, Steve; Nichols, Carol. "Macros". The Rust Programming Language. https://doc.rust-lang.org/book/ch19-06-macros.html

  43. R3RS, R4RS, R5RS, R6RS, R7RS Small Edition https://standards.scheme.org/

  44. R0RS, R1RS, R2RS https://standards.scheme.org/early/

  45. SMLNJ.org http://www.smlnj.org/sml97.html

  46. POSIX.2, Shell and Utilities, Command Interpreter (IEEE Std 1003.2-1992.) /wiki/POSIX.2

  47. "STD.stdio - D Programming Language". https://dlang.org/phobos/std_stdio.html

  48. Scala runs on the Java Virtual Machine from which it inherits the runtime exception handling.

  49. gcc can warn on unchecked errno. Newer versions of Visual Studio usually throw exceptions on failed I/O when using stdio. /wiki/GNU_compiler_collection

  50. Considerable error checking can be enabled optionally, but by default Perl is not failsafe.

  51. gcc can warn on unchecked errno. Newer versions of Visual Studio usually throw exceptions on failed I/O when using stdio. /wiki/GNU_compiler_collection

  52. set -e enables termination if any unchecked exit status is nonzero. /wiki/Exit_status

  53. Data from McConnell, Steve (30 November 2009). Code Complete. Microsoft Press. p. 100. ISBN 9780735636972. The Statements ratio column "shows typical ratios of source statements in several high-level languages to the equivalent code in C. A higher ratio means that each line of code in the language listed accomplishes more than does each line of code in C. 9780735636972

  54. The ratio of line count tests won by each language to the number won by C when using the Compare to feature at McLoone, Jon (November 14, 2012). "Code Length Measured in 14 Languages". Archived from the original on 2012-11-19. C gcc was used for C, C++ g++ was used for C++, FORTRAN G95 was used for FORTRAN, Java JDK Server was used for Java, and Smalltalk GST was used for Smalltalk. https://web.archive.org/web/20121119043607/https://blog.wolfram.com/2012/11/14/code-length-measured-in-14-languages/

  55. Felleisen, Matthias. On the Expressive Power of Programming Languages. ESOP '90 3rd European Symposium on Programming. CiteSeerX 10.1.1.51.4656. /wiki/CiteSeerX_(identifier)

  56. "How programs are measured". Computer Language Benchmarks Game. Retrieved 2018-05-29. https://benchmarksgame-team.pages.debian.net/benchmarksgame/how-programs-are-measured.html#source-code

  57. "The Ultimate Benchmark". The Computer Language Benchmarks Game. Retrieved 2018-05-29. https://benchmarksgame-team.pages.debian.net/benchmarksgame/dont-jump-to-conclusions.html

  58. Valentine, S. H. (November 1974). "Comparative Notes on Algol 68 and PL/I". The Computer Journal. 17 (4): 325–331. doi:10.1093/comjnl/17.4.325. https://doi.org/10.1093%2Fcomjnl%2F17.4.325

  59. "Vrije Universiteit Amsterdam" (PDF). http://dare.ubvu.vu.nl/bitstream/1871/2609/1/11054.pdf