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Comparing values using == operator


Comparing values using == operator

By : André Silva
Date : November 22 2020, 01:01 AM
I hope this helps . The runtime identifies your literal usages of "a" and retrieves the same reference to all those usages, resulting in one string object rather than two as you would expect.
Instead of using literals, try the following:
code :
string A1 = new string(new char[] {'a'});
string A2 = new string(new char[] {'a'});

Calculator.AreEqual(A1, A2); // returns false


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comparing float/double values using == operator

comparing float/double values using == operator


By : user3345424
Date : March 29 2020, 07:55 AM
I hope this helps . IBM has a recommendation for comparing two floats, using division rather than subtraction - this makes it easier to select an epsilon that works for all ranges of input.
code :
if (abs(a/b - 1) < epsilon)
comparing values while operator overloading in cpp

comparing values while operator overloading in cpp


By : Emiel
Date : March 29 2020, 07:55 AM
Hope this helps Yes, and people will hate you for it, because you're overloading < but returning >...
What is the purpose of the '==' operator when comparing values vs '='?

What is the purpose of the '==' operator when comparing values vs '='?


By : BMan
Date : March 29 2020, 07:55 AM
I hope this helps you . First, note that I understand that == is used for comparing two expressions, while = is used for assigning a value to a variable. However, python is such a clean language with minimal syntax requirements, that this seems like an easy operator to axe. Also I am not trying to start a debate or discussion, but rather learn if there is something that I'm missing to improve my knowledge of programming. , One very simple reason is that python allows boolean expressions:
code :
a = b == c
a = b = c
Operator oveloading comparing two values from

Operator oveloading comparing two values from


By : Łukasz Kepke
Date : March 29 2020, 07:55 AM
To fix the issue you can do You're comparing pointers, not objects, so your operator is never called.
Do
code :
*w1 == *w2
w1->operator==(*w2);
W<int> w1;
W<int> w2;

w1.x = 10;
w2.x = 10;
bool operator==(const W&) const
Different behaviors of 'is' operator when comparing variables with same int values

Different behaviors of 'is' operator when comparing variables with same int values


By : Grant
Date : March 29 2020, 07:55 AM
it fixes the issue is checks for memory address. Immutable objects that are wrappers around C type tends to have same memory address, whereas others don't. The difference here is the bytes required to store the integers.
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