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std::initializer_list to return member variables returns incorrect values


std::initializer_list to return member variables returns incorrect values

By : Zeba Ali
Date : November 22 2020, 02:59 PM
help you fix your problem std::initializer_list is not a container, you cannot use it to return a list of items from a function. When you write the following
code :
std::initializer_list<int> local_list = {a, b};
const int __temp_array[2] = {a, b};
std::initializer_list<int> local_list{__temp_array, __temp_array + 2};  
// the above line assumes the implementation has access to such a constructor


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Python default values for class member function parameters set to member variables

Python default values for class member function parameters set to member variables


By : f.motamed
Date : March 29 2020, 07:55 AM
it should still fix some issue I don't really see what's wrong with your code. If you chose a falsy default value for head, you could do: head = head or self.head which is more concise.
Otherwise, this is pretty much what you have to do to handle default arguments. Alternatively, use kwargs:
code :
def display(self,**kwargs):
    head = kwargs.get("head", self.head)

    if not head:
        return

    print head,

    self.display(head=head.link) # you should always name an optional argument,
                                 # and you must name it if **kwargs is used.
ArrayList for loop returning incorrect values for object member variables

ArrayList for loop returning incorrect values for object member variables


By : user529614
Date : March 29 2020, 07:55 AM
Does that help
every other object in the ArrayList should have their relationship values incremented by 3
code :
baratheons.get(0).giveFief(baratheons, baratheons.get(0))
arrayListLord: Lord("Robert", 15)
               Lord("Renly", -5)
               Lord("Stannis", 30)
temp:          Lord("Robert", 25)

arrayListLord: Lord("Renly", -5)                
               Lord("Stannis", 30)
this.relationship = this.relationship + 3
l.setRelationship( this.relationship )
temp:          Lord("Robert", 28)

arrayListLord: Lord("Renly", 28)                
               Lord("Stannis", 30)
temp:          Lord("Robert", 31)

arrayListLord: Lord("Renly", 28)                
               Lord("Stannis", 31)
This marks the start of testGratefulLord -
Renly has a relationship of 28.
Stannis has a relationship of 31.
l.setRelationship(l.getRelationship() + 3)
temp:          Lord("Robert", 25)

arrayListLord: Lord("Renly", -2)                
               Lord("Stannis", 33)
Redshift returns a []uint8 instead of an integer, converting between them returns incorrect values

Redshift returns a []uint8 instead of an integer, converting between them returns incorrect values


By : ANZAR AHSAN
Date : March 29 2020, 07:55 AM
hope this fix your issue I think you might be interpreting a string ([]uint8 == []byte), actually. See https://play.golang.org/p/Rfpey2NPiI7
code :
originalValue := []uint8{0x32, 0x30, 0x30} // "200"
bValue := []byte(originalValue) // byte is a uint8 anyway
fmt.Printf("Converted to uint16: %d\n", binary.LittleEndian.Uint16(bValue))
fmt.Printf("Actual value: %s", string(bValue))
How to return a constant from a member function that (usally) returns a reference (to member data)

How to return a constant from a member function that (usally) returns a reference (to member data)


By : CSuski
Date : March 29 2020, 07:55 AM
To fix the issue you can do Your chosen optimisation is in conflict with the interface that you provide.
One approach might be to not return a reference, but a transparent wrapper that behaves like a reference. Something similar to std::vector::::reference. An example:
code :
struct Reference {
    double* element;

    operator double() const {
         return element
             ? *element
             : 0;
    }
    Reference& operator=(double d) {
        if (!element)
            throw std::out_of_range("Cannot modify right side of diagnoal");
        *element = d;
        return *this;
    }
};

const Reference
LowerTriangular::operator()(unsigned i, unsigned j) const {
    return {
        j > i
            ? nullptr
            : data_ + i*(i + 1)/2 + j
    };
}

Reference
LowerTriangular::operator()(unsigned i, unsigned j) {
    return {
        j > i
            ? nullptr
            : data_ + i*(i + 1)/2 + j
    };
}
Why does Scipy sparse implementation returns incorrect number of singular values although dense one returns correct?

Why does Scipy sparse implementation returns incorrect number of singular values although dense one returns correct?


By : user2900213
Date : March 29 2020, 07:55 AM
will help you You can find this on the scipy documentation for scipy, but k must be: 1 <= k < min(A.shape) so if your shape is 1401375, 51 then the min is 51 and k has to be less than that not less than or equal
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