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Convert list of Objects to map of properties


Convert list of Objects to map of properties

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Convert list of Objects to map of properties
Tag : java , By : yew tree
Date : January 11 2021, 05:14 PM

it should still fix some issue If you don't have Section elements that have the same getCode() value :
Map<String,String> map = 
sections.stream()
        .collect(toMap(Section::getCode, Section::getName);
toMap(Function<? super T, ? extends K> keyMapper,
                                    Function<? super T, ? extends U> valueMapper,
                                    BinaryOperator<U> mergeFunction)
Map<String,String> map = 
sections.stream()
        .collect(toMap(Section::getCode, Section::getName, (a,b)->b);

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Convert a list of objects to an array of one of the object's properties


Tag : chash , By : Alex Sadzawka
Date : March 29 2020, 07:55 AM
Does that help Say I have the following class: , You are looking for
MyList.Select(x=>x.Name).ToArray();

convert a list containing objects, to a list containing a specific function or properties of those objects


Tag : python , By : Mark W
Date : March 29 2020, 07:55 AM
may help you . Sounds like a job for list comprehensions.
names_list = [obj.name() for obj in obj_list]

Java 8 streaming: How to convert list of objects to a list of its selected properties


Tag : java , By : Joe
Date : March 29 2020, 07:55 AM
this will help I have a class , How about something like this
stream.stream().flatMap(p -> Stream.of(p.firstName, p.lastName)).collect(Collectors.toList());

how can I convert Javascript List of properties to List of objects


Tag : javascript , By : user150694
Date : March 29 2020, 07:55 AM
hope this fix your issue You could check if an object contains the key ID and build a new object with all following objects.
var data = [{ ID: "0" }, { Day: "" }, { Time: "" }, { Type: "Both" }, { Status: "false" }, { ID: "0" }, { Day: "" }, { Time: "" }, { Type: "Both" }, { Status: "false" }],
    result = data.reduce(function (r, o) {
        if ('ID' in o) {
            r.push(Object.assign({}, o));
        } else {
            Object.assign(r[r.length - 1], o);
        }
        return r;
    }, []);

console.log(result);
.as-console-wrapper { max-height: 100% !important; top: 0; }

Convert a list of elements of a specific class to a dictionary with the objects properties as key and values


Tag : python-3.x , By : user103892
Date : September 28 2020, 09:00 PM
Does that help I have a list of objects with each object having one property called "key" and another property called "value". , Using dict comprehension
Ex:
print({i.key: i.value for i in mylist})
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