f#

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F# TupleGet ActivePattern usage

I would like to know how to extract values out of a tuple Expression in F# when using 开发者_如何学Goquotations. If for example, I have a quotation <@ fst(sample_tuple) @>, how do I deconstruct[详细]

2023-04-11 16:42 分类：问答
how to read file with multiple record

this is similiar to my previous question: but here is some improvisation: 3 4 5 aaaaa aaaaa aaaaa aaaaa bbbbb[详细]

2023-04-11 14:26 分类：问答
equivalent of size_t in F#

I see that in F# the type of List.length is \'a list -> int Is it safe to assume that int will always be big enough to contain the size of any list I might create, and is that because lists are limi[详细]

2023-04-11 12:21 分类：问答
how to read file and skip some white spaces

this is 开发者_如何转开发similiar to my previous question, but there is another improvisation, how is the code if i want to skip some white spaces, for this case is \"enter\", for example:[详细]

2023-04-11 10:46 分类：问答
F# Set.union argument order performance

Is there any recommended way to call a Set.union if I know one of the two sets will be larger than the other?[详细]

2023-04-11 07:13 分类：问答
Transfer a MySQL table into a F# matrix

I would like to transfer a SQL table (let say i. 2 columns : one containing users ID and one containing users age and ii. n rows) containing only integers into a F# matrix (same dimensions).[详细]

2023-04-11 02:06 分类：问答
recursive function and a breakpoint using F#

Consider the following code: [<EntryPoint>] let main (args: string []) = let rec main time = let newTime = time + 2 // place a breakpoint at this line[详细]

2023-04-10 20:18 分类：问答
Is there a more generic way of iterating,filtering, applying operations on collections in F#?

Let\'s take this code: open System open System.IO let lines = seq { use sr = new StreamReader(@\"d:\\a.h\")[详细]

2023-04-10 16:46 分类：问答
How to build FParsec for .NET Compact Framework?

I’m writing a small application based on FParsec. Today, I’m looking for an opportunity to make a version for Compact Framework.[详细]

2023-04-10 15:05 分类：问答
How to do boolean exclusive or?

Apparently there is no boolean version of the bitwise exclusive开发者_运维百科-or operator (^^^)... what to do?This is provided by the not-equal operator <>.let inline xor a b = (a || b) &&a[详细]

2023-04-10 12:34 分类：问答