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What was the rationale behind having the receiver in functions default to the global object?


What was the rationale behind having the receiver in functions default to the global object?

By : user2956920
Date : November 22 2020, 03:03 PM
seems to work fine Brendan Eich answered:
code :


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What's the rationale behind C's <stdlib.h> as opposed to including these functions by default?

What's the rationale behind C's <stdlib.h> as opposed to including these functions by default?


By : user3671486
Date : March 29 2020, 07:55 AM
wish helps you The C language was designed, from the start, to be used both in ordinary applications (running in a 'hosted environment') and OS kernels (and other specialized environments, running in a 'freestanding environment'). In the latter, ordinary C library functions like malloc() may be unavailable.
In order to allow the same compiler to be used for both hosted and freestanding environments, library functions are not hardcoded into the compiler, but rather are placed into header files loaded by the compiler - such as stdlib.h. OS kernels and other specialized programs do not (and cannot) include these standard headers.
R get object from global environment from function if object exists in global but use different default if not

R get object from global environment from function if object exists in global but use different default if not


By : Andrei Razumau
Date : March 29 2020, 07:55 AM
Hope this helps You can modify your function to check if x exists in the .GlobalEnv and get it from there if it does, otherwise return the default value.
code :
myfunc <- function(x = 30) {

  if ("x" %in% ls(envir = .GlobalEnv)) {
    get("x", envir = .GlobalEnv)
  } else {
    x
  }

}
myfunc()
[1] 30
myfunc()
[1] 100
myfunc <- function(x = 30) {

  if ("x" %in% ls(envir = .GlobalEnv) & missing(x)) {
    get("x", envir = .GlobalEnv)
  } else {
    x
  }

} 
x <- 100
myfunc(x=300)
[1] 300
Are all the global variables and global functions members of the `window` object?

Are all the global variables and global functions members of the `window` object?


By : user2723758
Date : March 29 2020, 07:55 AM
will help you
are all the global variables and global functions members of the window object?
JS restore default/global functions

JS restore default/global functions


By : Kurt Parten
Date : March 29 2020, 07:55 AM
Any of those help Overwriting document.open creates a variable/function named open directly on the document object. However, the original function was not on the object itself but its prototype - so you can indeed restore it.
The open function is from HTMLDocument.prototype so you can access it using HTMLDocument.prototype.open.
Sharing JS functions between files without making them global or attaching them to a global object?

Sharing JS functions between files without making them global or attaching them to a global object?


By : George Htc
Date : March 29 2020, 07:55 AM
Hope that helps If you want to avoid using globals (you should!), you should take a look at CommonJS or Harmony modules.
Using a module system would allow you to do things like this:
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