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`is_numeric` Modifier

Returns true if variable is a number or numeric string.

sequence: 4815162342
another_sequence: just type 4 8 15 16 23 42

{{ if sequence | is_numeric }}
{{ if another_sequence | is_numeric }}

@if (Statamic::modify($sequence)->isNumeric()->fetch()) ... @endif
@if (Statamic::modify($another_sequence)->isNumeric()->fetch()) ... @endif

true
false

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