Make a reservation to dine in for lunch or dinner at P.F. How to convert Fahrenheit to Celsius. 0 degrees Fahrenheit is equal to -17.77778 degrees Celsius: 0 °F = -17.77778 °C. The temperature T in degrees Celsius (°C) is equal to the temperature T in degrees Fahrenheit (°F) minus 32, times 5/9. T (°C) = (T (°F) - 32) × 5/9. T (°C) = (T (°F) - 32) / (9/5). T (°C) = (T (°F) - 32) / 1.8. Insures that adult felony offenders are effectively supervised in environments that are humane and secure. Includes detailed list of services and online search for offenders.
-->F# Melodic Minor Musical scales cheatsheet. Finding an interval's name. In order to find interval name between two notes using the tables below.
F# 5.0 adds several improvements to the F# language and F# Interactive. It is released with .NET 5.
Softmod wii netflix. You can download the latest .NET SDK from the .NET downloads page.
Get started
F# 5.0 is available in all .NET Core distributions and Visual Studio tooling. For more information, see Get started with F# to learn more.
Package references in F# scripts
F# 5 brings support for package references in F# scripts with #r 'nuget:..' syntax. For example, consider the following package reference:
You can also supply an explicit version after the name of the package like this:
Package references support packages with native dependencies, such as ML.NET.
Package references also support packages with special requirements about referencing dependent .dlls. For example, the FParsec package used to require that users manually ensure that its dependent FParsecCS.dll was referenced first before FParsec.dll was referenced in F# Interactive. This is no longer needed, and you can reference the package as follows:
Red hot chili peppers 320. This feature implements F# Tooling RFC FST-1027. For more information on package references, see the F# Interactive tutorial.
String interpolation
F# interpolated strings are fairly similar to C# or JavaScript interpolated strings, in that they let you write code in 'holes' inside of a string literal. Here's a basic example:
However, F# interpolated strings also allow for typed interpolations, just like the sprintf function, to enforce that an expression inside of an interpolated context conforms to a particular type. It uses the same format specifiers.
In the preceding typed interpolation example, the %s requires the interpolation to be of type string, whereas the %d requires the interpolation to be an integer.
Additionally, any arbitrary F# expression (or expressions) can be placed in side of an interpolation context. It is even possible to write a more complicated expression, like so:
Although we don't recommend doing this too much in practice.
This feature implements F# RFC FS-1001.
Support for nameof
F# 5 supports the nameof operator, which resolves the symbol it's being used for and produces its name in F# source. This is useful in various scenarios, such as logging, and protects your logging against changes in source code.
The last line will throw an exception and 'month' will be shown in the error message.
You can take a name of nearly every F# construct:
Three final additions are changes to how operators work: the addition of the nameof<'type-parameter> form for generic type parameters, and the ability to use nameof as a pattern in a pattern match expression.
Taking a name of an operator gives its source string. If you need the compiled form, use the compiled name of an operator:
Taking the name of a type parameter requires a slightly different syntax:
This is similar to the typeof<'T> and typedefof<'T> operators.
F# 5 also adds support for a nameof pattern that can be used in match expressions:
The preceding code uses 'nameof' instead of the string literal in the match expression.
This feature implements F# RFC FS-1003.
Open type declarations
F# 5 also adds support for open type declarations. An open type declaration is like opening a static class in C#, except with some different syntax and some slightly different behavior to fit F# semantics.
With open type declarations, you can open any type to expose static contents inside of it. Additionally, you can open F#-defined unions and records to expose their contents. For example, this can be useful if you have a union defined in a module and want to access its cases, but don't want to open the entire module.
Unlike C#, when you open type on two types that expose a member with the same name, the member from the last type being opened shadows the other name. This is consistent with F# semantics around shadowing that exist already.
This feature implements F# RFC FS-1068.
Consistent slicing behavior for built-in data types
Behavior for slicing the built-in FSharp.Core data types (array, list, string, 2D array, 3D array, 4D array) used to not be consistent prior to F# 5. Some edge-case behavior threw an exception and some wouldn't. In F# 5, all built-in types now return empty slices for slices that are impossible to generate:
This feature implements F# RFC FS-1077.
Fixed-index slices for 3D and 4D arrays in FSharp.Core
F# 5.0 brings support for slicing with a fixed index in the built-in 3D and 4D array types.
To illustrate this, consider the following 3D array:
z = 0
| xy | 0 | 1 |
|---|---|---|
| 0 | 0 | 1 |
| 1 | 2 | 3 |
z = 1
| xy | 0 | 1 |
|---|---|---|
| 0 | 4 | 5 |
| 1 | 6 | 7 |
What if you wanted to extract the slice [| 4; 5 |] from the array? This is now very simple!
This feature implements F# RFC FS-1077b.
F-35
F# quotations improvements
F# code quotations now have the ability to retain type constraint information. Consider the following example:
The constraint generated by the inline function is retained in the code quotation. The negate function's quotated form can now be evaluated.
This feature implements F# RFC FS-1071.
Applicative Computation Expressions
Computation expressions (CEs) are used today to model 'contextual computations', or in more functional programming-friendly terminology, monadic computations.
F# 5 introduces applicative CEs, which offer a different computational model. Applicative CEs allow for more efficient computations provided that every computation is independent, and their results are accumulated at the end. When computations are independent of one another, they are also trivially parallelizable, allowing CE authors to write more efficient libraries. This benefit comes at a restriction, though: computations that depend on previously computed values are not allowed.
The follow example shows a basic applicative CE for the Result type.
If you're a library author who exposes CEs in their library today, there are some additional considerations you'll need to be aware of.
This feature implements F# RFC FS-1063.
Interfaces can be implemented at different generic instantiations
You can now implement the same interface at different generic instantiations:
This feature implements F# RFC FS-1031.
Default interface member consumption
F# 5 lets you consume interfaces with default implementations.
Consider an interface defined in C# like this:
You can consume it in F# through any of the standard means of implementing an interface:
This lets you safely take advantage of C# code and .NET components written in modern C# when they expect users to be able to consume a default implementation.
F# Language Specification
This feature implements F# RFC FS-1074.
Simplified interop with nullable value types
Nullable (value) types (called Nullable Types historically) have long been supported by F#, but interacting with them has traditionally been somewhat of a pain since you'd have to construct a Nullable or Nullable<SomeType> wrapper every time you wanted to pass a value. Now the compiler will implicitly convert a value type into a Nullable<ThatValueType> if the target type matches. The following code is now possible:
This feature implements F# RFC FS-1075.
Preview: reverse indexes
F# 5 also introduces a preview for allowing reverse indexes. The syntax is ^idx. Here's how you can an element 1 value from the end of a list:
You can also define reverse indexes for your own types. To do so, you'll need to implement the following method:
Here's an example for the Span<'T> type:
This feature implements F# RFC FS-1076.
Preview: overloads of custom keywords in computation expressions
Computation expressions are a powerful feature for library and framework authors. They allow you to greatly improve the expressiveness of your components by letting you define well-known members and form a DSL for the domain you're working in.
Fsharp Cheat Sheet
F# 5 adds preview support for overloading custom operations in Computation Expressions. It allows the following code to be written and consumed:
Prior to this change, you could write the InputBuilder type as it is, but you couldn't use it the way it's used in the example. Since overloads, optional parameters, and now System.ParamArray types are allowed, everything just works as you'd expect it to.
This feature implements F# RFC FS-1056.