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meander
All things about https://github.com/noprompt/meander
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wilkerlucio 2021-03-20T23:21:49.011400Z
hello, I have a case that I'm trying to figure if meander can solve, I have data that can come in the following formats:
; contains rental prices and sales price
{:pricingInfos [{:rentalInfo {:period "MONTHLY",
:warranties [],
:monthlyRentalTotalPrice "4520"},
:yearlyIptu "278",
:price "3690",
:businessType "RENTAL",
:monthlyCondoFee "830"}
{:yearlyIptu "278",
:price "990000",
:businessType "SALE",
:monthlyCondoFee "830"}]}
; contains only sales price
{:pricingInfos [{:yearlyIptu "278",
:price "990000",
:businessType "SALE",
:monthlyCondoFee "830"}]}(m/match {:pricingInfos [{:rentalInfo {:period "MONTHLY",
:warranties [],
:monthlyRentalTotalPrice "4520"},
:yearlyIptu "278",
:price "3690",
:businessType "RENTAL",
:monthlyCondoFee "830"}
{:yearlyIptu "278",
:price "990000",
:businessType "SALE",
:monthlyCondoFee "830"}]}
{:pricingInfos [{:price ?price
:businessType "SALE"}]}
{:sales-price ?price})non exhaustive pattern match, is there a way to do a match like this with meander? (that kinda "finds" the matching item from a list)
phronmophobic 2021-03-20T23:26:44.011800Z
I think m/find with m/scan will do what you want:
> (m/find {:pricingInfos [{:rentalInfo {:period "MONTHLY",
:warranties [],
:monthlyRentalTotalPrice "4520"},
:yearlyIptu "278",
:price "3690",
:businessType "RENTAL",
:monthlyCondoFee "830"}
{:yearlyIptu "278",
:price "990000",
:businessType "SALE",
:monthlyCondoFee "830"}]}
{:pricingInfos (m/scan
{:price ?price
:businessType "SALE"})}
{:sales-price ?price})
;;{:sales-price "990000"}wilkerlucio 2021-03-20T23:28:08.012100Z
work as a charm, thanks!
phronmophobic 2021-03-20T23:28:43.012500Z
if you want to find multiple items, you can use m/search in place of m/find
wilkerlucio 2021-03-20T23:44:10.012700Z
cool, what if I like to optionally matching also the rental price (which sometimes may not be there), what is the way to go?
wilkerlucio 2021-03-20T23:44:37.012900Z
I was able to match here when both are available, but the same pattern returns nil in case I remove the rental data
phronmophobic 2021-03-20T23:53:59.013100Z
not sure I understand the question. do you have an example?