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https://github.com/inkarkat/vim-ingo-library.git
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Ingo Karkat
56 lines
1.6 KiB
VimL
56 lines
1.6 KiB
VimL
" ingo/dict/count.vim: Functions for counting with Dictionaries.
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"
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" DEPENDENCIES:
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" - ingo/collections.vim autoload script
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" - ingo/dict.vim autoload script
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"
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" Copyright: (C) 2017 Ingo Karkat
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" The VIM LICENSE applies to this script; see ':help copyright'.
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"
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" Maintainer: Ingo Karkat <ingo@karkat.de>
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"
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" REVISION DATE REMARKS
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" 001 24-May-2017 file creation
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function! ingo#dict#count#Items( dict, items, ... )
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"******************************************************************************
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"* PURPOSE:
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" For each item in a:items, create a key with count 1 / increment the value of
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" an existing key in a:dict.
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"* ASSUMPTIONS / PRECONDITIONS:
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" None.
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"* EFFECTS / POSTCONDITIONS:
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" None.
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"* INPUTS:
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" a:dict Dictionary that holds the items -> counts. Need not be empty.
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" a:items List of items to be counted.
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" a:emptyValue Optional value for items in a:list that yield an empty
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" string, which (in Vim versions prior to 7.4.1707) cannot be
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" used as a Dictionary key.
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" If omitted, empty values are not included in the Dictionary.
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"* RETURN VALUES:
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" a:dict
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"* SEE ALSO:
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" ingo#collections#ToDict() does not count, just uses a hard-coded value
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" ingo#dict#FromKeys() also does not count but allows to specify a default value
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"******************************************************************************
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for l:item in a:items
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if l:item ==# ''
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if a:0
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let l:item = a:1
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else
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continue
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endif
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endif
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if has_key(a:dict, l:item)
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let a:dict[l:item] += 1
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else
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let a:dict[l:item] = 1
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endif
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endfor
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return a:dict
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endfunction
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" vim: set ts=8 sts=4 sw=4 noexpandtab ff=unix fdm=syntax :
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