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git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@568 0fc631ac-6414-0410-93d0-97cfa31319b6
23 lines
825 B
Plaintext
23 lines
825 B
Plaintext
Function: number_of_items
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--Usage--
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> number_of_items(in: some_collection)
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Returns the position of an item in a list or characters in a string.
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--Parameters--
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| @in@ [[type:list]] or [[type:map]] or [[type:set]] or [[type:string]]
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Object to determine the number of items of.
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When it is a set, returns the number of cards.
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When it is a string, returns the number of characters.
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| @filter@ [[type:function]] (optional) Act as if the list was [[fun:filter_list|filtered]] by this criterion.
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Only when @in@ is a set.
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--Examples--
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> number_of_items(in: ["x", "y", "z"]) == 3
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> number_of_items(in: "pink") == 4
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> number_of_items(in: set) == # number of cards in the set
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>
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> # the number of red cards in the set
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> number_of_items(in: set, filter: { card.color == "red" } )
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