Node.JS export function without object wrapper
You need to overwrite it as module.exports = function() {} Merely writing exports = function() {} creates a new local variables called exports and hides the exports variable living in module.exports
function
powershell: how to write-host value from [ref] variable
You would have probably tried: write-host “the new value is $obj1.value” and got corresponding output of the new value is System.Management.Automation.PSReference.value I think you did not notice the .value in the end of the output. In strings you have to do something like this while accessing properties: write-host “the new value is $($obj1.value)” Or use … Read more
What are some interesting uses of higher-order functions?
Well, you notice that Haskell has no syntax for loops? No while or do or for. Because these are all just higher-order functions: map :: (a -> b) -> [a] -> [b] foldr :: (a -> b -> b) -> b -> [a] -> b filter :: (a -> Bool) -> [a] -> [a] unfoldr … Read more
Sass map.get() doesn’t work. map-get() does. What gives?
I am having a similar issue as OP (using dart-sass v1.25.0), and only map-get works, map.get doesn’t. The documentation doesn’t seem to be very clear on this, but the (Sass Module System: Draft 6) document on Github explains it better. It seems like Sass is moving on to using @use in favour of @import for … Read more
How do I emulate a keypress inside a Vim function?
You can use feedkeys(). Type :help feedkeys to read more: feedkeys({string} [, {mode}]) *feedkeys()* Characters in {string} are queued for processing as if they come from a mapping or were typed by the user. They are added to the end of the typeahead buffer, thus if a mapping is still being executed these characters come … Read more
How to alias a function name in Fortran
Yes, Fortran has procedure pointers, so you can in effect alias a function name. Here is a code example which assigns to the function pointer “f_ptr” one function or the other. Thereafter the program can use “f_ptr” and the selected function will be invoked. module ExampleFuncs implicit none contains function f1 (x) real :: f1 … Read more
Working with function types in Go
If mentioning var is your main problem, you can drop it easily, by changing = into :=, like this: english := Greeting(func(name string) string { return (“Hello, ” + name); }) But you don’t even have to cast your function into Greeting. The spec says this about function types: A function type denotes the set … Read more
Define a recursive function within a function in Go
You can’t access Function2 inside of it if it is in the line where you declare it. The reason is that you’re not referring to a function but to a variable (whose type is a function) and it will be accessible only after the declaration. Quoting from Spec: Declarations and scope: The scope of a … Read more
Fish shell: Check if argument is provided for function
count is the right way to do this. For the common case of checking whether there are any arguments, you can use its exit status: function fcd if count $argv > /dev/null open $argv else open $PWD end end To answer your second question, test -d $argv returns true if $argv is empty, because POSIX … Read more
What is the difference between a cmdlet and a function?
To complement Bruce Payette’s helpful answer: Not all functions are created equal in PowerShell: An advanced function is the written-in-PowerShell analog of a (binary) cmdlet (which, as stated, is compiled from a .NET language); decorating a function’s param(…) block with the [CmdletBinding()] attribute or decorating at least one parameter with a [Parameter()] attribute thanks, Ansgar … Read more