CODEWITHSUNDEEP
rubyregexparsing
hagope
hagope

Reputation: 5531

How do I extract prices from a string after a label using regex?

My string could look like this:

Rental DurationPrice60-day$47.8090-day$56.23120-day$60.92

or

Rental DurationPrice90-day$47.80180-day$56.23

or

any combination of:

30-day and/or 60-day and/or 90-day and/or 180-day

I'd like to capture the prices that follow these time frames.

Upvotes: 1

Views: 340

Answers (3)

the Tin Man
the Tin Man

Reputation: 160581

Rather than use a more complicated regex, I'd go with String.scan and let it walk through the string:

'Rental DurationPrice60-day$47.8090-day$56.23120-day$60.92'.scan(/\$[\d.]+/)
[
    [0] "$47.8090",
    [1] "$56.23120",
    [2] "$60.92"
]

If you don't want the currency indicator you can post-process the values, stripping off the first character:

'Rental DurationPrice60-day$47.8090-day$56.23120-day$60.92'.scan(/\$[\d.]+/).map{ |s| s[1..-1] }
[
    [0] "47.8090",
    [1] "56.23120",
    [2] "60.92"
]

Or use a tiny different regex with the flatten method:

'Rental DurationPrice60-day$47.8090-day$56.23120-day$60.92'.scan(/\$([\d.]+)/).flatten
[
    [0] "47.8090",
    [1] "56.23120",
    [2] "60.92"
]

Upvotes: 1

Borodin
Borodin

Reputation: 126742

This regex captures the prices following all nn-day fields.

/(?:30|60|180)-day\$(\d+\.\d\d)/

Use it as

prices = "Rental DurationPrice60-day$47.8090-day$56.23120-day$60.92"
prices.scan(/(?:30|60|180)-day\$(\d+\.\d\d)/)

to fetch all prices into an array.

Upvotes: 2

Nicolas Guillaume
Nicolas Guillaume

Reputation: 8434

This regex will capture all the prices: (?:\d{2,}-day\$(\d+\.\d{2}))

Upvotes: 0

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