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In C#, how do I calculate someone's age based on a DateTime type birthday?
A given DateTime Type represents a person's birthday.
How could I calculate his / her age in years?
61 Answers
...
method of iterating over sqlalchemy model's defined columns?
...not desirable.
But it is actually much easier because if you inherit from Base, you have a __table__ attribute, so that you can do:
for c in JobStatus.__table__.columns:
print c
for c in JobStatus.__table__.foreign_keys:
print c
See How to discover table properties from SQLAlchemy mappe...
What does “mro()” do?
...s we have single inheritance, __mro__ is just the tuple of: the class, its base, its base's base, and so on up to object (only works for new-style classes of course).
Now, with multiple inheritance...:
>>> class D(B, C): pass
...
>>> D.__mro__
(<class '__main__.D'>, <cl...
data.table vs dplyr: can one do something well the other can't or does poorly?
...n shallow copied DT
DT[x > 2L, x := 3L] ## have to copy (like base R / dplyr does always); otherwise original DT will
## also get modified.
}
By not using shallow(), the old functionality is retained:
bar <- function(DT) {
DT[, newcol := 1L] ...
Getting the class name from a static method in Java
... class extends another one, this doesn't return the actual class, only the base class.
– Luis Soeiro
Sep 12 '12 at 22:34
1
...
Simple tool to 'accept theirs' or 'accept mine' on a whole file using git
...rs can appear swapped if you are resolving conflicts in the context of a rebase operation. Because rebase works by checking out the target branch then cherry-picking commits from "your" branch onto the target, the incoming change ("theirs") is from "your" branch, and the current branch is the targe...
Difference between HBase and Hadoop/HDFS
... it. So if somebody can help me clearly understand difference between the HBase and Hadoop or if give some pointers which might help me understand the difference.
...
How to Unit test with different settings in Django?
...find apps which are located in settings.dev which is extension of settings.base
– holms
Feb 26 '18 at 13:02
...
delegate keyword vs. lambda notation
...hing trick)...
using System;
using System.Linq.Expressions;
public class Base
{
public void Foo(Action action)
{
Console.WriteLine("I suspect the lambda expression...");
}
}
public class Derived : Base
{
public void Foo(Action<int> action)
{
Console.Write...
Does Qt support virtual pure slots?
...generated by MOC does call the pure virtual slots, but that's ok since the base class can't be instantiated anyway...
Again, just like regular c++ pure virtual methods, the class cannot be instantiated until the methods are given an implementation.
One thing: in the subclass, you actuallly don't n...