The a == b expression invokes A.__eq__, since it exists. Its code includes self.value == other. Since int’s don’t know how to compare themselves to B’s, Python tries invoking B.__eq__ to see if it knows how to compare itself to an int. If you amend your code to show what values are being compared: class … Read more
If you want two objects with the same elements but in a different order to compare equal, then the obvious thing to do is compare sorted copies of them – for instance, for the dictionaries represented by your JSON strings a and b: import json a = json.loads(“”” { “errors”: [ {“error”: “invalid”, “field”: “email”}, … Read more
I find using the be_within default rspec matcher more elegant: expect(@article.updated_at.utc).to be_within(1.second).of Time.now
In C#, the == operator (when applied to reference type expressions) performs a reference equality check unless it’s overloaded. You’re comparing two references which are the result of boxing conversions, so those are distinct references. EDIT: With types which overload the ==, you can get different behaviour – but that’s based on the compile-time type … Read more
You have = the assignment operator, == the ‘equal’ comparison operator and === the ‘identical’ comparison operator. $a = $b Assign Sets $a to be equal to $b. $a == $b Equal TRUE if $a is equal to $b. $a === $b Identical TRUE if $a is equal to $b, and they are of the … Read more
The difference is that there is no operator ==!. This expression: $a ==! $b Is basically the same as this: $a == (!$b)
Your real question seem to be: Why: null >= 0; // true But: null == 0; // false What really happens is that the Greater-than-or-equal Operator (>=), performs type coercion (ToPrimitive), with a hint type of Number, actually all the relational operators have this behavior. null is treated in a special way by the Equals … Read more
Both are valuable. I use both doctest and nose taking the place of unittest. I use doctest for cases where the test is giving an example of usage that is actually useful as documentation. Generally I don’t make these tests comprehensive, aiming solely for informative. I’m effectively using doctest in reverse: not to test my … Read more
It turns out Microsoft already has this covered in its testing framework: CollectionAssert.AreEquivalent Remarks Two collections are equivalent if they have the same elements in the same quantity, but in any order. Elements are equal if their values are equal, not if they refer to the same object. Using reflector, I modified the code behind … Read more
From the python 2 manual: CPython implementation detail: Objects of different types except numbers are ordered by their type names; objects of the same types that don’t support proper comparison are ordered by their address. When you order two strings or two numeric types the ordering is done in the expected way (lexicographic ordering for … Read more