How to repair your damaged reputation at work?
How do I add a validation to make sure the date string being passed to the method is in the ffg. format:
```'YYYY-MM-DD'
```
if it's not, method should raise some sort of error. I'm using C#. I see this can be done using regular expressions but it's a bit more complex solution than just checking if the input is in the desired format. Is there a simpler way C#?
Yes, there is a simpler way to validate a date string in C# using the `DateTime.TryParseExact` method. Here is an example:
```csharp
using System;
private static void ValidateDate(string dateString)
{
    DateTime date;
    string format = "yyyy-MM-dd";
    if (DateTime.Try
How is arc defined in TikZ?

In TikZ, arcs can be drawn using the \arc or \draw [arc] commands. The basic syntax of the \arc command is \arc[options]{(x,y)}{radius:start angle:end angle:[rotated around angle:[relative to center (cx,cy)]]}:

For example, to draw an arc of 120 degrees with a radius of 1 cm, starting at (3,3) and ending at (3,6), you can use the following command:
```
\arc[radius=1cm]{(3,