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Activity for toraritte
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Edit | Post #291125 |
Post edited: |
— | about 2 months ago |
| Comment | Post #291125 |
Thank you for the encouragement! I thought about that, because those points do sound plausible, but I have just started out with .NET in earnest, so it is just guesswork. I also didn't want to discourage answers.
If no-one refutes those points in a day or two, I'll definitely post them as answers... (more) |
— | about 2 months ago |
| Edit | Post #291125 |
Post edited: |
— | about 2 months ago |
| Edit | Post #291125 | Initial revision | — | about 2 months ago |
| Question | — |
.NET dependency management: `dotnet add package` vs. Paket? Many older projects (i.e., older than 5 years) provide instructions to the Paket .NET dependency manager (e.g., Suave), so I started digging into it, got confused, then gave up for while because errors kept cropping up and I just wanted to make progress. I reached a point in my project where I hav... (more) |
— | about 2 months ago |
| Edit | Post #290660 | Initial revision | — | 4 months ago |
| Question | — |
How to write a function that only accepts a list of `Error string` `Results` in F# on the level of types? For example, given a `mergeErrors` function where input is always a list of `Error string`s, ```fsharp let es = [ Error 1; Error 2; Error 3 ] let mergeErrors (errors: Result list) : Result = errors |> List.map (function | Error e -> e) |> Error mergeErrors (es: Result list)... (more) |
— | 4 months ago |
| Edit | Post #290497 |
Post edited: |
— | 4 months ago |
| Edit | Post #290574 |
Post edited: |
— | 4 months ago |
| Edit | Post #290574 |
Post edited: |
— | 4 months ago |
| Edit | Post #290574 | Initial revision | — | 4 months ago |
| Question | — |
What is a "sealed" type in F# and why doesn't the type test pattern operator (:?) work on it out of the `box`? The F# language guide (see Signatures article) has a very sparse definition of what a "sealed" type is: > |Attribute|Description| > |--- |--- | > |`[]`|For a type that has no abstract members, or that should not be extended.| > |`[]`|For a type that is an interface.| I searched the entire PD... (more) |
— | 4 months ago |
| Edit | Post #290558 |
Post edited: |
— | 4 months ago |
| Edit | Post #290557 |
Post edited: |
— | 4 months ago |
| Edit | Post #290556 |
Post edited: |
— | 4 months ago |
| Edit | Post #290558 | Initial revision | — | 4 months ago |
| Answer | — |
A: How to change the color of a cell to a user defined value while keeping its existing style using NPOI from F#? Solved this by writing my own clone function: ```fsharp open System.Reflection let cloneCellStyle (cell: NPOI.XSSF.UserModel.XSSFCell) = let original = cell.CellStyle // printfn "ORIGINAL: %A" original.FontIndex let workbook = cell.Sheet.Workbook let copy = workbook.Create... (more) |
— | 4 months ago |
| Edit | Post #290557 | Initial revision | — | 4 months ago |
| Question | — |
How to change the color of a cell to a user defined value while keeping its existing style using NPOI from F#? The answer provided in the How to set the cell color to a user defined value using NPOI from F#? thread solves the problem of how to set the right properties using F#, but it uses a new `ICellStyle` object and overwrites the existing style with it. Re-writing the function (see below) to setting th... (more) |
— | 4 months ago |
| Edit | Post #290556 | Initial revision | — | 4 months ago |
| Answer | — |
A: How to set the cell color to a user defined value using NPOI from F#? I failed to notice that a cell's `CellStyle` property returns the generic `ICellStyle`, which has to be cast down to `NPOI.XSSF.UserModel.XSSFCellStyle` in order to gain access to the `FillBackgroundXSSFColor` and `FillForegroundXSSFColor` properties. Also, here's a summary of which property does ... (more) |
— | 4 months ago |
| Edit | Post #290555 | Initial revision | — | 4 months ago |
| Question | — |
How to set the cell color to a user defined value using NPOI from F#? As far as I can tell (from F# at least), cell can only be colored using predefined `NPOI.SS.UserModel.IndexedColors`. From the available methods / properties, ``` val it: ICellStyle = NPOI.XSSF.UserModel.XSSFCellStyle { ... FillBackgroundColor = -494s; FillBackgroundColorColor... (more) |
— | 4 months ago |
| Comment | Post #290488 |
The SE thread [What is your way to create good passwords that can actually be remembered?](https://security.stackexchange.com/questions/662/what-is-your-way-to-create-good-passwords-that-can-actually-be-remembered) ([archived](https://web.archive.org/web/20230601214152/https://security.stackexchange.... (more) |
— | 4 months ago |
| Edit | Post #290548 | Initial revision | — | 4 months ago |
| Answer | — |
A: What is the difference between `static let` and `static member` in F#? Paraphrasing the F# language guide's `let` Bindings in Classes article: > A `let` binding in a class creates a private field or function; > to expose data or functions publicly, declare a property or a member > method. > > + An instance `let` binding is a `let` binding that is not preceded by... (more) |
— | 4 months ago |
| Edit | Post #290547 | Initial revision | — | 4 months ago |
| Question | — |
What is the difference between `static let` and `static member` in F#? Taking the example from this Stackoverflow question: ``` type Vector2D(dx : float, dy : float) = static let zero = Vector2D(0.0, 0.0) static let onex = Vector2D(1.0, 0.0) static let oney = Vector2D(0.0, 1.0) /// Get the zero vector static member Zero = zero ///... (more) |
— | 4 months ago |
| Edit | Post #290096 |
Post edited: |
— | 4 months ago |
| Edit | Post #290096 |
Post edited: |
— | 4 months ago |
| Edit | Post #290497 | Initial revision | — | 5 months ago |
| Answer | — |
A: What does F#'s `box` keyword do and where is it documented? `box` and `unbox` are operators documented in the F# Core API Reference; it tersely states that they box / unbox (respectively) a strongly typed value. + `box a` returns value `a` "wrapped" in a .NET `System.Object` instance "wrapped" here simply means that `a` is upcast to `System.Object`: ... (more) |
— | 5 months ago |
| Edit | Post #290496 | Initial revision | — | 5 months ago |
| Question | — |
What does F#'s `box` keyword do and where is it documented? The Null Values article in the F# Language Reference show an example that uses it, but it does not explain what it does exactly. > You can use the following code to check if an arbitrary value is > `null`. > > match box value with > | null -> printf "The value is null." > | -> p... (more) |
— | 5 months ago |
| Comment | Post #290329 |
It was the latter (i.e., present finding in an answer). How would you clarify the question? The question arose from my ignorance of how a browser makes sure that a website's SSL certificate is valid. (Hm, perhaps I should put "HTTP" in the question.) I also aimed to ask a fairly general question to i... (more) |
— | 6 months ago |
| Edit | Post #290329 |
Post edited: |
— | 6 months ago |
| Edit | Post #290330 | Initial revision | — | 6 months ago |
| Answer | — |
A: How does a client verify a server's SSL certificate? What are the specific steps? Found this old article at the bottom of the search results to be the best explanation to date: (The longer version is here, SSL Handshake (Sun Java System Directory Server Enterprise Edition 6.0 Reference). If it doesn't work, here's the archived version.) > ### Server Authentication During S... (more) |
— | 6 months ago |
| Edit | Post #290329 | Initial revision | — | 6 months ago |
| Question | — |
How does a client verify a server's SSL certificate? What are the specific steps? I have little to no idea what happens after a client obtains the server's certificate. It has to make sure that it (somehow) valid, but how? (more) |
— | 6 months ago |
| Edit | Post #290275 |
Post edited: |
— | 6 months ago |
| Edit | Post #290275 |
Post edited: |
— | 6 months ago |
| Edit | Post #290275 |
Post edited: |
— | 6 months ago |
| Edit | Post #290275 | Initial revision | — | 6 months ago |
| Answer | — |
A: How to programmatically evaluate Excel data validations using .NET? 0. State of the art (as 11/22/2023) The `NPOI.SS.Formula.DataValidationEvaluator` class seems to mirror Apache POI's `DataValidationEvaluator` class, but NPOI's version only implemented the `IsType` method thus far. (For reference, here's Apache POI's `isType`.) There also seems to be no .NET E... (more) |
— | 6 months ago |
| Edit | Post #290274 | Initial revision | — | 6 months ago |
| Question | — |
How to programmatically evaluate Excel data validations using .NET? What I would like to do: 1. Set a cell value. 2. Check with a program if cell values conform to data validation rules. I could extract all the information needed to create a validation function, but I don't want to re-invent the wheel. What I have in mind is along the lines of how NPOI allo... (more) |
— | 6 months ago |
| Edit | Post #290255 |
Post edited: |
— | 6 months ago |
| Edit | Post #290256 |
Post edited: |
— | 6 months ago |
| Edit | Post #290255 |
Post edited: |
— | 6 months ago |
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