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Regex to find mixed number in string
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| /^(\d++(?! *\/))? *-? *((?:(\d+) *\/ *(\d+)))?(.*)$/ | |
| # "1 1/2 parts".scan(/^(\d++(?! *\/))? *-? *((?:(\d+) *\/ *(\d+)))?(.*)$/) => [["1", "1/2", "1", "2", " parts"]] | |
| # "25ml".scan(/^(\d++(?! *\/))? *-? *((?:(\d+) *\/ *(\d+)))?(.*)$/) => [["25", nil, nil, nil, "ml"]] | |
| # "1 ounce".scan(/^(\d++(?! *\/))? *-? *((?:(\d+) *\/ *(\d+)))?(.*)$/) => => [["1", nil, nil, nil, "ounce"]] |
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