strings.strlen() function

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strings.strlen() returns the length of a string. String length is determined by the number of UTF code points a string contains.

Function type signature

{{% caption %}} For more information, see Function type signatures. {{% /caption %}}

Parameters

v

({{< req >}}) String value to measure.

Examples

• Filter based on string value length
• Store the length of string values

Filter based on string value length

{{< expand-wrapper >}} {{% expand "View example input and output" %}}

Input data

_time	_value	*tag
2021-01-01T00:00:00Z	pl_gqcz	t1
2021-01-01T00:00:10Z	pl_gvn	t1
2021-01-01T00:00:20Z	pl_phw	t1
2021-01-01T00:00:30Z	pl_guvzy	t1
2021-01-01T00:00:40Z	pl_vcce	t1
2021-01-01T00:00:50Z	pl_fgy	t1

_time	_value	*tag
2021-01-01T00:00:00Z	pl_beida	t2
2021-01-01T00:00:10Z	pl_euoxp	t2
2021-01-01T00:00:20Z	pl_gtz	t2
2021-01-01T00:00:30Z	pl_oxut	t2
2021-01-01T00:00:40Z	pl_wf	t2
2021-01-01T00:00:50Z	pl_dtnbv	t2

Output data

_time	_value	*tag
2021-01-01T00:00:10Z	pl_gvn	t1
2021-01-01T00:00:20Z	pl_phw	t1
2021-01-01T00:00:50Z	pl_fgy	t1

_time	_value	*tag
2021-01-01T00:00:20Z	pl_gtz	t2
2021-01-01T00:00:40Z	pl_wf	t2

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Store the length of string values

{{< expand-wrapper >}} {{% expand "View example input and output" %}}

Input data

_time	_value	*tag
2021-01-01T00:00:00Z	pl_gqcz	t1
2021-01-01T00:00:10Z	pl_gvn	t1
2021-01-01T00:00:20Z	pl_phw	t1
2021-01-01T00:00:30Z	pl_guvzy	t1
2021-01-01T00:00:40Z	pl_vcce	t1
2021-01-01T00:00:50Z	pl_fgy	t1

_time	_value	*tag
2021-01-01T00:00:00Z	pl_beida	t2
2021-01-01T00:00:10Z	pl_euoxp	t2
2021-01-01T00:00:20Z	pl_gtz	t2
2021-01-01T00:00:30Z	pl_oxut	t2
2021-01-01T00:00:40Z	pl_wf	t2
2021-01-01T00:00:50Z	pl_dtnbv	t2

Output data

_time	_value	length	*tag
2021-01-01T00:00:00Z	pl_gqcz	7	t1
2021-01-01T00:00:10Z	pl_gvn	6	t1
2021-01-01T00:00:20Z	pl_phw	6	t1
2021-01-01T00:00:30Z	pl_guvzy	8	t1
2021-01-01T00:00:40Z	pl_vcce	7	t1
2021-01-01T00:00:50Z	pl_fgy	6	t1

_time	_value	length	*tag
2021-01-01T00:00:00Z	pl_beida	8	t2
2021-01-01T00:00:10Z	pl_euoxp	8	t2
2021-01-01T00:00:20Z	pl_gtz	6	t2
2021-01-01T00:00:30Z	pl_oxut	7	t2
2021-01-01T00:00:40Z	pl_wf	5	t2
2021-01-01T00:00:50Z	pl_dtnbv	8	t2

{{% /expand %}} {{< /expand-wrapper >}}