### Register a New Library with LibStub

Source: https://www.wowace.com/projects/libstub

Use NewLibrary to register a new library. If the library is already loaded and no upgrade is necessary, it returns nil. This example shows basic registration and setup.

```lua
local lib = LibStub:NewLibrary("MyLibrary-1.0", 1)

if not lib then
  return	-- already loaded and no upgrade necessary
end

lib.somearray = lib.somearray or {}

if not lib.frame then
  lib.frame=CreateFrame("Frame")
end


function lib:SomeFunction()
  -- do stuff here
end

function lib:SomeOtherFunction()
  -- do other stuff here
end

local function OnUpdate()
  -- timing stuff here
end

lib.frame:SetScript("OnUpdate", OnUpdate);

```

--------------------------------

### Checkout LibStub Source Code with SVN

Source: https://www.wowace.com/projects/libstub/source

Use this command to get a copy of the LibStub project's source code from the repository.

```bash
svn checkout https://repos.wowace.com/wow/libstub/trunk libstub
```

--------------------------------

### Register Library with Revision Tag

Source: https://www.wowace.com/projects/libstub

Register a library using a revision control system tag for the minor version. Be cautious when moving repositories, as revision numbers change. A fallback is provided for handling such cases.

```lua
local lib = LibStub:NewLibrary("MyLibrary-1.0", "$Revision: 12345$")

```

```lua
local lib = LibStub:NewLibrary("MyLibrary-1.0", 
  12345+tonumber(strmatch("%d+","$Revision: 2$")) 
)

```