cecil

Cecil is a library to inspect, modify and create .NET programs and libraries.

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3Mentions

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3KGitHub stars

REPOSITORY AT A GLANCE

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What it is

Cecil is a library to inspect, modify and create .NET programs and libraries.

GitHub

Where it is used

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What people are saying

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This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM UTC.

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Mentions over time

HN mentions by year3 dated mentions

Observed mentions: 2011-10-20 03:29:58 UTC to 2018-06-16 17:32:49 UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

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Period	Start (UTC)	End (exclusive, UTC)	Mentions	Comments
2011	2011-01-01 00:00:00 UTC	2012-01-01 00:00:00 UTC	1	1
2012	2012-01-01 00:00:00 UTC	2013-01-01 00:00:00 UTC	0	0
2013	2013-01-01 00:00:00 UTC	2014-01-01 00:00:00 UTC	0	0
2014	2014-01-01 00:00:00 UTC	2015-01-01 00:00:00 UTC	0	0
2015	2015-01-01 00:00:00 UTC	2016-01-01 00:00:00 UTC	1	1
2016	2016-01-01 00:00:00 UTC	2017-01-01 00:00:00 UTC	0	0
2017	2017-01-01 00:00:00 UTC	2018-01-01 00:00:00 UTC	0	0
2018	2018-01-01 00:00:00 UTC	2019-01-01 00:00:00 UTC	1	1

What Hacker News says

3 sources

mintplant·Jun 16, 2018

You can plug Reflexil [0] into ILSpy for on-the-fly code patching. Then once you've got something going, you can (manually) port your changes over to a Mono.Cecil-based [1] patching program. This is how I hack up Unity games written with C#. [0] http://reflexil.net/ [1] https://github.com/jbevain/cecil

In Tools for Exploring .NET Internals

jbevain·Jul 27, 2015

If that's a subject you find interesting, you can also read the source for two OSS .NET decompilers: ILSpy: https://github.com/icsharpcode/ilspy JustDecompile: https://github.com/telerik/JustDecompileEngine/ Both are based on the same library that is used in the post: Mono.Cecil (https://github.com/jbevain/cecil).

In Writing a Simple Decompiler for .NET, Part 1

SeveredCross·Oct 20, 2011

I agree with all of your points, though the only one I can address is the LINQ for source code quip and amend it somewhat to an already possible "LINQ for codebases." It should, in theory, be just a few weekends worth of work to use Mono.Cecil (https://github.com/jbevain/cecil) to provide a nice queryable API to inspect an (already compiled) codebase. I'm sure some nice static evaluation tools could be written based on this that nobody's thought of yet. That said, being able to inspect the source-code pre-compilation is a whole other level above and beyond—as a fan of the compile-time safety that statically-typed languages provide, any opportunity to eliminate bugs and complexity before the code makes it to a customer is a welcome one, and if Roslyn is good, it could be huge.

In Microsoft previews Roslyn: .NET Compiler-as-a-Service infrastructure