The overload of operator == that works on two std::vectors will compare the vector sizes and return false if those are different; if not, it will compare the contents of the vector element-by-element. If operator == is defined for the vector’s element type, then the comparison of vectors through operator == is valid and meaningful. … Read more
Because new Byte() creates value type, which are compared by value (by default it will return byte with value 0). And new Byte[0] creates array, which is a reference type and compared by reference (and these two instances of array will have different references). See Value Types and Reference Types article for details.
You can use assert_frame_equals with check_names=False (so as not to check the index/columns names), which will raise if they are not equal: In [11]: from pandas.testing import assert_frame_equal In [12]: assert_frame_equal(df, expected, check_names=False) You can wrap this in a function with something like: try: assert_frame_equal(df, expected, check_names=False) return True except AssertionError: return False In more … Read more
The question is confusingly worded. Let’s break it down into many smaller questions: Why is it that one tenth plus two tenths does not always equal three tenths in floating point arithmetic? Let me give you an analogy. Suppose we have a math system where all numbers are rounded off to exactly five decimal places. … Read more
Try if (dt.Date == DateTime.Now.Date) It will only take the date portion and the timestamp will be 12:00:00
When you use <= or >= to compare two date objects, they are compared via valueOf, which is the same as getTime for Date. But when you use ==, they are two different objects of the same type, so it returns false. Added some examples: > new Date(2011, 7, 30, 0, 0, 0, 0) == … Read more
if(val1 == val2 || (isNaN(val1) && isNaN(val2))) Nothing to improve. Just add the parentheses to make it clear to everyone.
You need to overload the == and != operators. Add this to your struct: public static bool operator ==(CisSettings c1, CisSettings c2) { return c1.Equals(c2); } public static bool operator !=(CisSettings c1, CisSettings c2) { return !c1.Equals(c2); }
To avoid boxing for struct / Nullable<T>, I would use: if (EqualityComparer<T>.Default.Equals(value,default(T))) { // do stuff } This supports any T that implement IEquatable<T>, using object.Equals as a backup, and handles null etc (and lifted operators for Nullable<T>) automatically. There is also Comparer<T>.Default which handles comparison tests. This handles T that implement IComparable<T>, falling back … Read more
dic1.Count == dic2.Count && !dic1.Except(dic2).Any();