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Elm (programming language)
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<p>Elm is a <a href="/facts/Domain-specific_language/n18H1foD">domain-specific</a> <a href="/facts/Programming_language/cWTYbgWa">programming language</a> for <a href="/facts/Declarative_programming/gogtdzcJ">declaratively</a> creating <a href="/facts/Web_browser/2pfyymLs">web browser</a>-based <a href="/facts/Graphical_user_interface/wBlQFWDP">graphical user interfaces</a>. Elm is <a href="/facts/Purely_functional_programming/am3DcNAd">purely functional</a>, and is developed with emphasis on <a href="/facts/Usability/zuAnqu9Q">usability</a>, performance, and <a href="/facts/Robustness_(computer_science)/jHr1dT3m">robustness</a>. It advertises "no <a href="/facts/Runtime_(program_lifecycle_phase)/lCxKsrzB">runtime</a> <a href="/facts/Exception_handling/VrJxgb9r">exceptions</a> in practice", made possible by the Elm compiler's <a href="/facts/Type_system/Tz0bAMS9">static type checking</a>. </p>