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comparison runtime/doc/vim9.txt @ 23088:285cde4b8d0e v8.2.2090

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patch 8.2.2090: Vim9: dict does not accept a key in quotes Commit: https://github.com/vim/vim/commit/c5e6a7179d7dee4315b412b56e172bb1ff092d3e Author: Bram Moolenaar <Bram@vim.org> Date: Fri Dec 4 19:12:14 2020 +0100 patch 8.2.2090: Vim9: dict does not accept a key in quotes Problem: Vim9: dict does not accept a key in quotes. Solution: Recognize a key in single or double quotes.
author Bram Moolenaar <Bram@vim.org>
date Fri, 04 Dec 2020 19:15:03 +0100
parents 29c5f168c6fd
children 99ef85ff1af4
comparison
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23087:ca8a14cbafb6 23088:285cde4b8d0e
1 *vim9.txt* For Vim version 8.2. Last change: 2020 Nov 25 1 *vim9.txt* For Vim version 8.2. Last change: 2020 Dec 04
2 2
3 3
4 VIM REFERENCE MANUAL by Bram Moolenaar 4 VIM REFERENCE MANUAL by Bram Moolenaar
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6 6
434 Dictionary literals ~ 434 Dictionary literals ~
435 435
436 Traditionally Vim has supported dictionary literals with a {} syntax: > 436 Traditionally Vim has supported dictionary literals with a {} syntax: >
437 let dict = {'key': value} 437 let dict = {'key': value}
438 438
439 Later it became clear that using a simple key name is very common, thus 439 Later it became clear that using a simple text key is very common, thus
440 literally dictionaries were introduced in a backwards compatible way: > 440 literal dictionaries were introduced in a backwards compatible way: >
441 let dict = #{key: value} 441 let dict = #{key: value}
442 442
443 However, this #{} syntax is unlike any existing language. As it appears that 443 However, this #{} syntax is unlike any existing language. As it turns out
444 using a literal key is much more common than using an expression, and 444 that using a literal key is much more common than using an expression, and
445 considering that JavaScript uses this syntax, using the {} form for dictionary 445 considering that JavaScript uses this syntax, using the {} form for dictionary
446 literals was considered a much more useful syntax. In Vim9 script the {} form 446 literals is considered a much more useful syntax. In Vim9 script the {} form
447 uses literal keys: > 447 uses literal keys: >
448 let dict = {key: value} 448 let dict = {key: value}
449 449
450 In case an expression needs to be used for the key, square brackets can be 450 This works for alphanumeric characters, underscore and dash. If you want to
451 used, just like in JavaScript: > 451 use another character, use a single or double quoted string: >
452 let dict = {'key with space': value}
453 let dict = {"key\twith\ttabs": value}
454 let dict = {'': value} # empty key
455
456 In case the key needs to be an expression, square brackets can be used, just
457 like in JavaScript: >
452 let dict = {["key" .. nr]: value} 458 let dict = {["key" .. nr]: value}
453 459
454 460
455 No :xit, :t, :append, :change or :insert ~ 461 No :xit, :t, :append, :change or :insert ~
456 462