Snippets tagged interop
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Async SNTP client
An asynchronous SNTP client that can retrieve the current time from an internet time server (such as time-a.nist.gov) and optionally update the local system clock to match. Demonstrates async UDP communication, bit-shifting, and native interop/PInvoke.
13 people like this
Like the snippet!Posted: 13 years ago by Joel Mueller
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Get COM instances from Running Object Table
Type extensions for System.Activator which enable the retrieval of COM instances from the Running Object Table.
1 people like this
Like the snippet!Posted: 13 years ago by Huw Simpson
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Unmanaged memory search
Useful for pinvoke stuff where your native API requires that you have a unmanaged buffer containing the data you want to work on. Edit: Changed native calls, removed Marshal.Copy (there is a async corner case but I won't delve into it here) and replaced with pinning.
5 people like this
Like the snippet!Posted: 11 years ago by David Klein
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Make option type usable in C#
Using FSharpOption
3 people like thisis painful from C#, but it doesn't have to.
Like the snippet!Posted: 9 years ago by Gauthier Segay
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Higher-Order Functions for Excel
Some of the standard higher-order functions (like Seq.map, Seq.iter, Seq.filter) but implemented for Excel interop. Effortlessly iterate across ranges of cells, reading them, updating them or formatting them. NB. Type-information won't be displayed correctly on fssnip (Office not installed on server presumably), so to get this working paste the code into VS, make yourself a spreadsheet with a range called 'MyRange' and use FSI to explore.
2 people like this
Like the snippet!Posted: 1 year ago by Kit Eason
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.NET Interop
Facilities for interop with languages supporting null.
4 people like this
Like the snippet!Posted: 13 years ago by Daniel Robinson
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F# yet another Interop example
Quick demo of using F# to interop with a native C library. C Library has not been checked for algorithm correctness (but works exactly as the origional).
13 people like this
Like the snippet!Posted: 12 years ago by David Klein
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Inverse Gamma function and Inverse Factorial by Approximation
Inverse Gamma function and Inverse Factorial by Approximation based on these references: http://mathforum.org/kb/message.jspa?messageID=342551&tstart=0 https://github.com/DarkoVeberic/LambertW
2 people like this
Like the snippet!Posted: 9 years ago by Fabio Galuppo
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C#-Friendly Single-Case Discriminated Unions
Single-case Discriminated Unions (https://fsharpforfunandprofit.com/posts/designing-with-types-single-case-dus/) are a lightweight way to create types for important concepts in your domain. Unfortunately, there's a few gotchas when consuming from C# to be aware of. For one, if you use the `==` or `!=` operators in C#, it will do a reference comparison, which is almost certainly not what you want for these wrapper types. By overriding `op_Equality` and `op_Inequality`, this will force it to use a structural comparison. Secondly, when using string concatenation via `+`, `String.Format`, or string interpolation, C# will implicitly convert non-string arguments to a string via `ToString`. This means if you forget to use `.Item` to unwrap your value, you will not get a compiler error, it will just implicitly call `ToString`, which by default will look like this: `Id "c148b684-2c40-4383-a1b9-0e8f37752fd0"`. By overriding `ToString`, we can make sure it will look like the raw underlying type when converted to a string: `c148b684-2c40-4383-a1b9-0e8f37752fd0`.
2 people like this
Like the snippet!Posted: 6 years ago by Justin Hewlett