# \#eep

**URL:** https://erlangforums.com/tag/eep/379.md

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## [EEP: Singleton Binary Literal Types](https://erlangforums.com/t/eep-singleton-binary-literal-types/5481)

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**Author:** [@williamthome](https://erlangforums.com/u/williamthome)\
**Replies:** 3\
**Last updated:** [October 29, 2026, 7:33am UTC](https://erlangforums.com/t/eep-singleton-binary-literal-types/5481 "2026-10-29T07:33:46Z")

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This EEP extends EEP 8 to allow binary literals such as \<\<"start"\>\> and \<\<"stop"\>\> as singleton types in -type, -spec, -callback, and record field type declarations. It also supports encoding annotations (\<\<"café"/utf8\>\>)…

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## [Has the STDLIB \`json\` module been backported to older Erlang versions?](https://erlangforums.com/t/has-the-stdlib-json-module-been-backported-to-older-erlang-versions/4630)

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**Author:** [@weaver](https://erlangforums.com/u/weaver)\
**Replies:** 2\
**Last updated:** [April 1, 2025, 3:23pm UTC](https://erlangforums.com/t/has-the-stdlib-json-module-been-backported-to-older-erlang-versions/4630 "2025-04-01T15:23:25Z")

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Hi folks! I’m trying to use ELP with OTP 25. ELP relies on rebar3’s experimental manifest command, which seems to rely on the json module added in OTP 27. Since json is written in pure Erlang, I’m curious if anyone has…

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## [EEP 77: comprehension assignments](https://erlangforums.com/t/eep-77-comprehension-assignments/4389)

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**Author:** [@richardc](https://erlangforums.com/u/richardc)\
**Replies:** 2\
**Last updated:** [January 17, 2025, 4:04pm UTC](https://erlangforums.com/t/eep-77-comprehension-assignments/4389 "2025-01-17T16:04:52Z")

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Adds assignments Pattern = Expression to comprehension qualifier lists. https://github.com/erlang/eep/pull/74

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## [EEP 75: based floating point literals](https://erlangforums.com/t/eep-75-based-floating-point-literals/4388)

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**Author:** [@richardc](https://erlangforums.com/u/richardc)\
**Replies:** 0\
**Last updated:** [January 14, 2025, 6:55pm UTC](https://erlangforums.com/t/eep-75-based-floating-point-literals/4388 "2025-01-14T18:55:51Z")

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Adds floating point literals using other bases than ten, such as 16 or 2, for exact text representation, as also found in Ada and C99/C++17. https://github.com/erlang/eep/pull/71

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## [Triple-quoted strings / adjacent strings without white space](https://erlangforums.com/t/triple-quoted-strings-adjacent-strings-without-white-space/3017)

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**Author:** [@raimo](https://erlangforums.com/u/raimo)\
**Replies:** 0\
**Last updated:** [November 10, 2023, 10:56am UTC](https://erlangforums.com/t/triple-quoted-strings-adjacent-strings-without-white-space/3017 "2023-11-10T10:56:04Z")

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The implementation of triple-quoted strings, EEP 64, has been merged to ‘master’ to be released in OTP-27.0 and all pre-releases. Since it is allowed today to concatenate a regular string with an empty string which look…

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## [Extending EEP54 with custom pretty printing](https://erlangforums.com/t/extending-eep54-with-custom-pretty-printing/1120)

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**Author:** [@josevalim](https://erlangforums.com/u/josevalim)\
**Replies:** 2\
**Last updated:** [February 25, 2022, 9:30am UTC](https://erlangforums.com/t/extending-eep54-with-custom-pretty-printing/1120 "2022-02-25T09:30:38Z")

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I am incorporating Implement extended error information for binary construction by bjorng · Pull Request #5281 · erlang/otp · GitHub, which brings excellent error messages during binary construction, within Elixir. One …