Why weird assignment from variable inside Powershell switch statement?
2
I'm a beginner at Powershell and am struggling to understand some syntax from some code I found on Github. I've read the docs on Powershell assignment, and on switch statements, and can't understand what is going on with the = $Yes and = $No in this code snippet:
Switch ($Prompt3) {
Yes {
Stop-EdgePDF
Write-Output "Edge will no longer take over as the default PDF viewer."; = $Yes
}
No {
= $No
}
}
I haven't been able to find any references to this kind of syntax, and it doesn't seem to do anything in the script. So why is it there?
powershell
asked Nov 21 '18 at 22:55
jacobseejacobsee
66631230
add a comment |
2
I'm a beginner at Powershell and am struggling to understand some syntax from some code I found on Github. I've read the docs on Powershell assignment, and on switch statements, and can't understand what is going on with the = $Yes and = $No in this code snippet:
Switch ($Prompt3) {
Yes {
Stop-EdgePDF
Write-Output "Edge will no longer take over as the default PDF viewer."; = $Yes
}
No {
= $No
}
}
I haven't been able to find any references to this kind of syntax, and it doesn't seem to do anything in the script. So why is it there?
powershell
asked Nov 21 '18 at 22:55
jacobseejacobsee
66631230
3
=is being overloaded as a function or alias. There is code missing from your example. Observe:${function:=} = { $args }; = 'test'orfunction = { $args }is another syntax
– TheIncorrigible1
Nov 21 '18 at 22:58
1
The issue has been resolved in the latest version of the script. See github.com/Sycnex/Windows10Debloater/issues/66 Voting to close because this was a typographical error.
– Bacon Bits
Dec 3 '18 at 17:11
add a comment |
2
2
2
I'm a beginner at Powershell and am struggling to understand some syntax from some code I found on Github. I've read the docs on Powershell assignment, and on switch statements, and can't understand what is going on with the = $Yes and = $No in this code snippet:
Switch ($Prompt3) {
Yes {
Stop-EdgePDF
Write-Output "Edge will no longer take over as the default PDF viewer."; = $Yes
}
No {
= $No
}
}
I haven't been able to find any references to this kind of syntax, and it doesn't seem to do anything in the script. So why is it there?
powershell
asked Nov 21 '18 at 22:55
jacobseejacobsee
66631230
I'm a beginner at Powershell and am struggling to understand some syntax from some code I found on Github. I've read the docs on Powershell assignment, and on switch statements, and can't understand what is going on with the = $Yes and = $No in this code snippet:
Switch ($Prompt3) {
Yes {
Stop-EdgePDF
Write-Output "Edge will no longer take over as the default PDF viewer."; = $Yes
}
No {
= $No
}
}
I haven't been able to find any references to this kind of syntax, and it doesn't seem to do anything in the script. So why is it there?
powershell
powershell
asked Nov 21 '18 at 22:55
jacobseejacobsee
66631230
asked Nov 21 '18 at 22:55
jacobseejacobsee
66631230
asked Nov 21 '18 at 22:55
jacobseejacobsee
66631230
asked Nov 21 '18 at 22:55
jacobseejacobsee
66631230
asked Nov 21 '18 at 22:55
jacobseejacobsee
66631230
66631230
3
=is being overloaded as a function or alias. There is code missing from your example. Observe:${function:=} = { $args }; = 'test'orfunction = { $args }is another syntax
– TheIncorrigible1
Nov 21 '18 at 22:58
1
The issue has been resolved in the latest version of the script. See github.com/Sycnex/Windows10Debloater/issues/66 Voting to close because this was a typographical error.
– Bacon Bits
Dec 3 '18 at 17:11
add a comment |
3
=is being overloaded as a function or alias. There is code missing from your example. Observe:${function:=} = { $args }; = 'test'orfunction = { $args }is another syntax
– TheIncorrigible1
Nov 21 '18 at 22:58
1
The issue has been resolved in the latest version of the script. See github.com/Sycnex/Windows10Debloater/issues/66 Voting to close because this was a typographical error.
– Bacon Bits
Dec 3 '18 at 17:11
3
3
= is being overloaded as a function or alias. There is code missing from your example. Observe: ${function:=} = { $args }; = 'test' or function = { $args } is another syntax– TheIncorrigible1
Nov 21 '18 at 22:58
= is being overloaded as a function or alias. There is code missing from your example. Observe: ${function:=} = { $args }; = 'test' or function = { $args } is another syntax– TheIncorrigible1
Nov 21 '18 at 22:58
1
1
The issue has been resolved in the latest version of the script. See github.com/Sycnex/Windows10Debloater/issues/66 Voting to close because this was a typographical error.
– Bacon Bits
Dec 3 '18 at 17:11
The issue has been resolved in the latest version of the script. See github.com/Sycnex/Windows10Debloater/issues/66 Voting to close because this was a typographical error.
– Bacon Bits
Dec 3 '18 at 17:11
add a comment |
2 Answers
2
active
oldest
votes
1
UPDATE: This issue has been resolved.
Looks to me like the variable name that was getting the assignment was deleted in a change back in August.
$PublishSettings = $Yes
Was changed to:
= $Yes
And:
$PublishSettings = $No
Was changed to:
= $No
Looks like poor search and replace.
I've created an issue for the problem at GitHub.
answered Nov 27 '18 at 22:35
Bacon BitsBacon Bits
21k43041
add a comment |
1
There are many characters that are valid in a function (or variable) name; this includes the = symbol. What you're observing is a function or alias.
Examples:
# standard function
function =
{
return $args
}
# accessing the function: drive
${Function:=} = {
return $args
}
# defining a new alias
New-Alias -Name = -Value Get-Variable
# using the Alias attribute
function Test-Thing
{
[Alias('=')]
param()
return $args
}
answered Nov 21 '18 at 23:10
TheIncorrigible1TheIncorrigible1
10.4k31436
Thank you for your answer. I've read it several times but still having a hard time wrapping my head around it. You're right that I didn't include all the code, but one other detail to mention is that the variables (aliases?) $Yes and $No are not used any where else in the PS script, which includes several Functions followed by several Switches based on user prompts like the one shown.
– jacobsee
Nov 27 '18 at 19:05
@jacobsee I'm assuming there's something that looks like$Yes = switch(condition) {somewhere in the codebase. If the variable is undefined, it returns$null
– TheIncorrigible1
Nov 27 '18 at 19:09
There is not. But if there were, what would that do? In my example, what is being assigned to the $No variable? It's an empty pair of brackets!? Thanks for your patience.
– jacobsee
Nov 27 '18 at 19:37
@jacobsee That's where your misunderstanding is coming -=is not an assignment operator in your code, it's a function call. Someone has literally defined a function named=.{ }is an emptyscriptblockbeing passed to the=function. You can assign expression outputs to variables, such as:$myvar = if ($true) { 'thisval' } else { 'thatval' }
– TheIncorrigible1
Nov 27 '18 at 19:44
1
@jacobsee Yeah, I reviewed the project and there's no definition for a=function or alias so that line of code would throw an exception.
– TheIncorrigible1
Nov 27 '18 at 20:57
|
show 4 more comments
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2 Answers
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active
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2 Answers
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active
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1
UPDATE: This issue has been resolved.
Looks to me like the variable name that was getting the assignment was deleted in a change back in August.
$PublishSettings = $Yes
Was changed to:
= $Yes
And:
$PublishSettings = $No
Was changed to:
= $No
Looks like poor search and replace.
I've created an issue for the problem at GitHub.
answered Nov 27 '18 at 22:35
Bacon BitsBacon Bits
21k43041
add a comment |
1
UPDATE: This issue has been resolved.
Looks to me like the variable name that was getting the assignment was deleted in a change back in August.
$PublishSettings = $Yes
Was changed to:
= $Yes
And:
$PublishSettings = $No
Was changed to:
= $No
Looks like poor search and replace.
I've created an issue for the problem at GitHub.
answered Nov 27 '18 at 22:35
Bacon BitsBacon Bits
21k43041
add a comment |
1
1
1
UPDATE: This issue has been resolved.
Looks to me like the variable name that was getting the assignment was deleted in a change back in August.
$PublishSettings = $Yes
Was changed to:
= $Yes
And:
$PublishSettings = $No
Was changed to:
= $No
Looks like poor search and replace.
I've created an issue for the problem at GitHub.
answered Nov 27 '18 at 22:35
Bacon BitsBacon Bits
21k43041
UPDATE: This issue has been resolved.
Looks to me like the variable name that was getting the assignment was deleted in a change back in August.
$PublishSettings = $Yes
Was changed to:
= $Yes
And:
$PublishSettings = $No
Was changed to:
= $No
Looks like poor search and replace.
I've created an issue for the problem at GitHub.
answered Nov 27 '18 at 22:35
Bacon BitsBacon Bits
21k43041
edited Dec 3 '18 at 17:07
answered Nov 27 '18 at 22:35
Bacon BitsBacon Bits
21k43041
answered Nov 27 '18 at 22:35
Bacon BitsBacon Bits
21k43041
answered Nov 27 '18 at 22:35
Bacon BitsBacon Bits
21k43041
21k43041
add a comment |
add a comment |
1
There are many characters that are valid in a function (or variable) name; this includes the = symbol. What you're observing is a function or alias.
Examples:
# standard function
function =
{
return $args
}
# accessing the function: drive
${Function:=} = {
return $args
}
# defining a new alias
New-Alias -Name = -Value Get-Variable
# using the Alias attribute
function Test-Thing
{
[Alias('=')]
param()
return $args
}
answered Nov 21 '18 at 23:10
TheIncorrigible1TheIncorrigible1
10.4k31436
Thank you for your answer. I've read it several times but still having a hard time wrapping my head around it. You're right that I didn't include all the code, but one other detail to mention is that the variables (aliases?) $Yes and $No are not used any where else in the PS script, which includes several Functions followed by several Switches based on user prompts like the one shown.
– jacobsee
Nov 27 '18 at 19:05
@jacobsee I'm assuming there's something that looks like$Yes = switch(condition) {somewhere in the codebase. If the variable is undefined, it returns$null
– TheIncorrigible1
Nov 27 '18 at 19:09
There is not. But if there were, what would that do? In my example, what is being assigned to the $No variable? It's an empty pair of brackets!? Thanks for your patience.
– jacobsee
Nov 27 '18 at 19:37
@jacobsee That's where your misunderstanding is coming -=is not an assignment operator in your code, it's a function call. Someone has literally defined a function named=.{ }is an emptyscriptblockbeing passed to the=function. You can assign expression outputs to variables, such as:$myvar = if ($true) { 'thisval' } else { 'thatval' }
– TheIncorrigible1
Nov 27 '18 at 19:44
1
@jacobsee Yeah, I reviewed the project and there's no definition for a=function or alias so that line of code would throw an exception.
– TheIncorrigible1
Nov 27 '18 at 20:57
|
show 4 more comments
1
There are many characters that are valid in a function (or variable) name; this includes the = symbol. What you're observing is a function or alias.
Examples:
# standard function
function =
{
return $args
}
# accessing the function: drive
${Function:=} = {
return $args
}
# defining a new alias
New-Alias -Name = -Value Get-Variable
# using the Alias attribute
function Test-Thing
{
[Alias('=')]
param()
return $args
}
answered Nov 21 '18 at 23:10
TheIncorrigible1TheIncorrigible1
10.4k31436
Thank you for your answer. I've read it several times but still having a hard time wrapping my head around it. You're right that I didn't include all the code, but one other detail to mention is that the variables (aliases?) $Yes and $No are not used any where else in the PS script, which includes several Functions followed by several Switches based on user prompts like the one shown.
– jacobsee
Nov 27 '18 at 19:05
@jacobsee I'm assuming there's something that looks like$Yes = switch(condition) {somewhere in the codebase. If the variable is undefined, it returns$null
– TheIncorrigible1
Nov 27 '18 at 19:09
There is not. But if there were, what would that do? In my example, what is being assigned to the $No variable? It's an empty pair of brackets!? Thanks for your patience.
– jacobsee
Nov 27 '18 at 19:37
@jacobsee That's where your misunderstanding is coming -=is not an assignment operator in your code, it's a function call. Someone has literally defined a function named=.{ }is an emptyscriptblockbeing passed to the=function. You can assign expression outputs to variables, such as:$myvar = if ($true) { 'thisval' } else { 'thatval' }
– TheIncorrigible1
Nov 27 '18 at 19:44
1
@jacobsee Yeah, I reviewed the project and there's no definition for a=function or alias so that line of code would throw an exception.
– TheIncorrigible1
Nov 27 '18 at 20:57
|
show 4 more comments
1
1
1
There are many characters that are valid in a function (or variable) name; this includes the = symbol. What you're observing is a function or alias.
Examples:
# standard function
function =
{
return $args
}
# accessing the function: drive
${Function:=} = {
return $args
}
# defining a new alias
New-Alias -Name = -Value Get-Variable
# using the Alias attribute
function Test-Thing
{
[Alias('=')]
param()
return $args
}
answered Nov 21 '18 at 23:10
TheIncorrigible1TheIncorrigible1
10.4k31436
There are many characters that are valid in a function (or variable) name; this includes the = symbol. What you're observing is a function or alias.
Examples:
# standard function
function =
{
return $args
}
# accessing the function: drive
${Function:=} = {
return $args
}
# defining a new alias
New-Alias -Name = -Value Get-Variable
# using the Alias attribute
function Test-Thing
{
[Alias('=')]
param()
return $args
}
answered Nov 21 '18 at 23:10
TheIncorrigible1TheIncorrigible1
10.4k31436
edited Nov 27 '18 at 19:23
answered Nov 21 '18 at 23:10
TheIncorrigible1TheIncorrigible1
10.4k31436
answered Nov 21 '18 at 23:10
TheIncorrigible1TheIncorrigible1
10.4k31436
answered Nov 21 '18 at 23:10
TheIncorrigible1TheIncorrigible1
10.4k31436
10.4k31436
Thank you for your answer. I've read it several times but still having a hard time wrapping my head around it. You're right that I didn't include all the code, but one other detail to mention is that the variables (aliases?) $Yes and $No are not used any where else in the PS script, which includes several Functions followed by several Switches based on user prompts like the one shown.
– jacobsee
Nov 27 '18 at 19:05
@jacobsee I'm assuming there's something that looks like$Yes = switch(condition) {somewhere in the codebase. If the variable is undefined, it returns$null
– TheIncorrigible1
Nov 27 '18 at 19:09
There is not. But if there were, what would that do? In my example, what is being assigned to the $No variable? It's an empty pair of brackets!? Thanks for your patience.
– jacobsee
Nov 27 '18 at 19:37
@jacobsee That's where your misunderstanding is coming -=is not an assignment operator in your code, it's a function call. Someone has literally defined a function named=.{ }is an emptyscriptblockbeing passed to the=function. You can assign expression outputs to variables, such as:$myvar = if ($true) { 'thisval' } else { 'thatval' }
– TheIncorrigible1
Nov 27 '18 at 19:44
1
@jacobsee Yeah, I reviewed the project and there's no definition for a=function or alias so that line of code would throw an exception.
– TheIncorrigible1
Nov 27 '18 at 20:57
|
show 4 more comments
Thank you for your answer. I've read it several times but still having a hard time wrapping my head around it. You're right that I didn't include all the code, but one other detail to mention is that the variables (aliases?) $Yes and $No are not used any where else in the PS script, which includes several Functions followed by several Switches based on user prompts like the one shown.
– jacobsee
Nov 27 '18 at 19:05
@jacobsee I'm assuming there's something that looks like$Yes = switch(condition) {somewhere in the codebase. If the variable is undefined, it returns$null
– TheIncorrigible1
Nov 27 '18 at 19:09
There is not. But if there were, what would that do? In my example, what is being assigned to the $No variable? It's an empty pair of brackets!? Thanks for your patience.
– jacobsee
Nov 27 '18 at 19:37
@jacobsee That's where your misunderstanding is coming -=is not an assignment operator in your code, it's a function call. Someone has literally defined a function named=.{ }is an emptyscriptblockbeing passed to the=function. You can assign expression outputs to variables, such as:$myvar = if ($true) { 'thisval' } else { 'thatval' }
– TheIncorrigible1
Nov 27 '18 at 19:44
1
@jacobsee Yeah, I reviewed the project and there's no definition for a=function or alias so that line of code would throw an exception.
– TheIncorrigible1
Nov 27 '18 at 20:57
Thank you for your answer. I've read it several times but still having a hard time wrapping my head around it. You're right that I didn't include all the code, but one other detail to mention is that the variables (aliases?) $Yes and $No are not used any where else in the PS script, which includes several Functions followed by several Switches based on user prompts like the one shown.
– jacobsee
Nov 27 '18 at 19:05
Thank you for your answer. I've read it several times but still having a hard time wrapping my head around it. You're right that I didn't include all the code, but one other detail to mention is that the variables (aliases?) $Yes and $No are not used any where else in the PS script, which includes several Functions followed by several Switches based on user prompts like the one shown.
– jacobsee
Nov 27 '18 at 19:05
@jacobsee I'm assuming there's something that looks like
$Yes = switch(condition) { somewhere in the codebase. If the variable is undefined, it returns $null– TheIncorrigible1
Nov 27 '18 at 19:09
@jacobsee I'm assuming there's something that looks like
$Yes = switch(condition) { somewhere in the codebase. If the variable is undefined, it returns $null– TheIncorrigible1
Nov 27 '18 at 19:09
There is not. But if there were, what would that do? In my example, what is being assigned to the $No variable? It's an empty pair of brackets!? Thanks for your patience.
– jacobsee
Nov 27 '18 at 19:37
There is not. But if there were, what would that do? In my example, what is being assigned to the $No variable? It's an empty pair of brackets!? Thanks for your patience.
– jacobsee
Nov 27 '18 at 19:37
@jacobsee That's where your misunderstanding is coming -
= is not an assignment operator in your code, it's a function call. Someone has literally defined a function named =. { } is an empty scriptblock being passed to the = function. You can assign expression outputs to variables, such as: $myvar = if ($true) { 'thisval' } else { 'thatval' }– TheIncorrigible1
Nov 27 '18 at 19:44
@jacobsee That's where your misunderstanding is coming -
= is not an assignment operator in your code, it's a function call. Someone has literally defined a function named =. { } is an empty scriptblock being passed to the = function. You can assign expression outputs to variables, such as: $myvar = if ($true) { 'thisval' } else { 'thatval' }– TheIncorrigible1
Nov 27 '18 at 19:44
1
1
@jacobsee Yeah, I reviewed the project and there's no definition for a
= function or alias so that line of code would throw an exception.– TheIncorrigible1
Nov 27 '18 at 20:57
@jacobsee Yeah, I reviewed the project and there's no definition for a
= function or alias so that line of code would throw an exception.– TheIncorrigible1
Nov 27 '18 at 20:57
|
show 4 more comments
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=is being overloaded as a function or alias. There is code missing from your example. Observe:${function:=} = { $args }; = 'test'orfunction = { $args }is another syntax– TheIncorrigible1
Nov 21 '18 at 22:58
1
The issue has been resolved in the latest version of the script. See github.com/Sycnex/Windows10Debloater/issues/66 Voting to close because this was a typographical error.
– Bacon Bits
Dec 3 '18 at 17:11