PowerShell Global variables local variables -

PowerShell Global variables local variables -

i have global variables , want utilize them in function.

i don't utilize local variables same name within functions!

class="lang-powershell prettyprint-override"># global vars: $var1 = @{ .. } $var2 = @( .. ) function testing{ $var1.keyx = "kjhkjh" $var2[2] = 6.89768 }

i , works, safe or have use:

class="lang-powershell prettyprint-override">$global:var1.keyx = "kjhkjh"

thanks, gooly

in function, modifying contents of hashtable there no need utilize $global unless function (or function caller between function , global scope) happens have local variables $var1 , $var2 (btw aren't missing $). if own code i'd leave is. however, if code allows other folks' code phone call function, utilize $global:var1 specifier create sure you're accessing global variable , not inadvertently accessing variable of same name within function calling function.

another thing know dynamic scoping in powershell when assign value variable in function , variable happens global e.g.:

$someglobal = 7 function foo { $someglobal = 42; $someglobal } foo $someglobal

powershell "copy-on-write" operation on variable $someglobal within function. if intent modify global utilize $global: specifier:

$someglobal = 7 function foo { $global:someglobal = 42; $someglobal } foo $someglobal

powershell global-variables