[Papero]

Hi,

I'm asking this since a lot of plugins cache a boolean to check if a certain library exits:

PHP Code:

bool bMyLib;
public void OnAllPluginsLoaded()
{
    bMyLib= LibraryExists("bMyLib");
}

public void OnLibraryRemoved(const char[] name)
{
    if (StrEqual(name, "MyLib"))
        bMyLib= false;
}

public void OnLibraryAdded(const char[] name)
{
    if (StrEqual(name, "MyLib"))
        bMyLib= true;
}

void MyFunc()
{
      if (bMyLib)
      {
      //Code
      }
} 


So, why I cannot just do:

PHP Code:

void MyFunc()
{
     if (LibraryExists("bMyLib"))
     {
      //Code
     }
} 


I saw a lot of plugins uses the first way, I also use it but "why"?

[Impact123]

I would suggest this. Use OnLibraryRemoved/OnLibraryAdded if you want to do something at the exact moment a library is added or removed. Use LibraryExists before you want to use a library. Use GetFeatureStatus if you want to check for specific things like if a native exists. Under normal circumstances your examples are both fine to use.

[Powerlord]

I generally just track whether an optional library is loaded globally. This means using OnLibraryAdded, OnLibraryRemoved, and a call to LibraryExists in OnAllPluginsLoaded to catch it if the other plugin loaded first.