What is a simple Noop statement in C#, that doesn't require implementing a method? (Inline/Lambda methods are OK, though.)
My current use case: I want to occupy the catch-block of a try-catch, so I can step into it while debugging and inspect the exception.
I'm aware I should probably be handling/logging the exception anyway, but that's not the point of this exercise.
This is an addition to @AHM 's answer since I wanted an easy way to do NOOP for debugging purposes (communicating with AB PLC CompactLogix and ran into errors only really visible in Disassembly because of C++ library DLL import in C#).
I took the one-liner
((Action)(() => { }))();
and put it into a snippet named noop.snippet then placed it in the folder named My Code Snippets.
(Tools -> Code Snippets Manager -> Location) OR Chord (Ctrl+K,Ctrl+B)
<?xml version="1.0" encoding="utf-8" ?>
<CodeSnippets xmlns="http://schemas.microsoft.com/VisualStudio/2005/CodeSnippet">
<CodeSnippet Format="1.0.0">
<Header>
<Title>noop</Title>
<Shortcut>noop</Shortcut>
<Description>Code snippet to inject an assembly (x86) equivalent of the NOOP command into the code's disassembly.</Description>
<Author>Jay Whaley</Author>
<SnippetTypes>
<SnippetType>Expansion</SnippetType>
</SnippetTypes>
</Header>
<Snippet>
<Code Language="csharp">
<![CDATA[// Forces a psuedo NOOP in disassembly
((Action)(() => { }))();
$end$]]>
</Code>
</Snippet>
</CodeSnippet>
</CodeSnippets>
This helps to make it a quick use shortcut in case low level communication becomes muddled and requires this to be a common debugging tactic. The actual assembly generated is as follows, but there're some posts about how to use actual assembly inline in C#.
After considering various options I decided that a pair of empty brackets and a terse comment were cleanest. No extra code, self-documenting, and far more obvious than a single semicolon.
{/* Noop */}
e.g.
if (String.IsNullOrEmpty(value))
{/* Noop */}
else if (Data.ContainsKey(key))
This is what I did when I was writing some "Fakes" for unit tests and some of the methods were to be left blank.
public void SetToken(string token)
{
// Method intentionally left empty
}
I followed the intellisense cues and got the above. My environment is Visual Studio 2022