Why use a do-end block in Lua?

Posted by Mayron on Stack Overflow See other posts from Stack Overflow or by Mayron
Published on 2014-05-27T17:22:01Z Indexed on 2014/05/27 21:27 UTC
Read the original article Hit count: 189

Filed under:

lua

|

block

|

scoping

I keep trying to find answers for this but fail to do so. I wanted to know, what is the do-end block actually used for? It just says values are used when needed in my book so how could I use this?

Do I use it to reduce the scope of local variables by placing a function in a do-end loop and place local variables outside of the function but inside this do-end block and the variables will be seen by the function? But then can the function still be called?

Sorry for being very vague. I hope that makes sense. Maybe an illustrated example might be useful ^^

© Stack Overflow or respective owner

Related posts about lua

Building Awesome WM

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Hello, I am following these steps in order to build Awesome window manager on 10.04 I am building 3.4 while the tutorial is for 3.1 I installed all of the specified dependencies including cairo. After running cd awesome-3.4 && make I get the following missing dependencies error: Running… >>> More
Building Awesome WM

as seen on Server Fault - Search for 'Server Fault'
Hello, I am following these steps in order to build Awesome window manager on 10.04 I am building 3.4 while the tutorial is for 3.1 I installed all of the specified dependencies including cairo. EDIT I ran: sudo apt-get install libxcb-xtest0-dev libxcb-property1-dev libxdg-basedir-dev libstartup-notification0-dev… >>> More
tolua++: Adding lua functions to a C++ class that has been exported to Lua

as seen on Stack Overflow - Search for 'Stack Overflow'
I am using tolua++ to export some C++ classes to Lua. My understanding that each class is 'implemented' on the lua side, as a lua table. I am wondering if it is possible therefore, to add new (Lua) methods to the C++ object table so that I can achieve the effect of adding new methods to the C++ class… >>> More
Lua/SWIG wrap userdata from within Lua

as seen on Stack Overflow - Search for 'Stack Overflow'
I am using swig-lua. I have a function in Lua which I call and it returns me a pointer (userdata). right now I know what this pointer is, but how can I tell Lua from within Lua? >>> More
conf.lua not being read (Lua/LOVE 0.8.0)

as seen on Stack Overflow - Search for 'Stack Overflow'
I need a higher resolution for my program to run. For some reason I cannot discern alone, LOVE is not applying (or finding?) conf.lua. My folder architecture is as follows: basefolder/ basefolder/main.lua basefolder/conf.lua basefolder/Resources/ My conf.lua reads: function love.conf(t) … >>> More

Related posts about block

LVM / Device Mapper maps wrong device

as seen on Server Fault - Search for 'Server Fault'
Hi, I run a LVM setup on a raid1 created by mdadm. md2 is based on sda6 (major:minor 8:6) and sdb6 (8:22). md2 is partition 9:2. The VG on top of md2 has 4 LVs, var, home, usr, tmp. First the problem: While booting it seems as if the device mapper takes the wrong partition for the mapping! Immediately… >>> More
Apache FOP - Table top and bottom borders missing pagebreak inside table

as seen on Stack Overflow - Search for 'Stack Overflow'
I am using Apache FOP to generate a PDF from a XLS FO document. I have created a test XLS FO document that contains a table with collapsed borders that with several tall rows. One of the rows starts on one page and ends on the next and this works as expected. The problem is that the bottom border… >>> More
Full Screen Video Tumblr

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a tumblr theme seen on http://www.kodilane.com and i am trying to make my Video Posts full screen. I have tried editing the code but i can only get the pictures to stretch. I have attached the template i have so far, if you can spot the changes that need to be done to make the video posts stretch… >>> More
std::map for storing static const Objects

as seen on Game Development - Search for 'Game Development'
I am making a game similar to Minecraft, and I am trying to fine a way to keep a map of Block objects sorted by their id. This is almost identical to the way that Minecraft does it, in that they declare a bunch of static final Block objects and initialize them, and then the constructor of each block… >>> More
Running in to some issues with Tumblr's Theme Parser

as seen on Stack Overflow - Search for 'Stack Overflow'
Below part of a tumblr theme I'm working on and you will notice that I use the {block:PostType} syntax to declare the opening tag of each post, which is a <li> element in an Ordered List. This allows me to not only dynamicly set the li's class based on the type of post but cuts down on the number… >>> More