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ListTools[Occurrences] - number of occurrences in a list
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Calling Sequence
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Occurrences(x, L)
Occurrences(x, L, f, opts)
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Parameters
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x
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anything
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L
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list
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f
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(optional) boolean valued procedure
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opts
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-
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(optional) extra arguments to procedure f
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Description
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•
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The Occurrences(x, L) command returns the number of entries in the list L which equal x using a boolean comparison.
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If a function f is provided, equality is tested using f(x, L[i], opts) for each element ![L[i]](/support/helpjp/helpview.aspx?si=7437/file02070/math93.png) in the list.
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Examples
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>
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![L := [3.263, 2.3, 6.255, 3.261, 3.262]](/support/helpjp/helpview.aspx?si=7437/file02070/math106.png)
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![L := [3.263, 2.3, 6.255, 3.261, 3.262]](/support/helpjp/helpview.aspx?si=7437/file02070/math109.png)
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| (2) |
The number of entries approximately equal to 3.263.
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| (3) |
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