604 posts
Spring Hill, Fl
Posted 24 January 2013 - 01:28 PM
Most of the "famouse programer"(Like people who made an good os or something(like NFD-OS))Always use spaces in front of code.What is it used for?
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taken in April 2020.
Why Is It Usefull To Use Spaces In Front Of Code?
Started by Zambonie, 24 January 2013 - 12:28 PM
189 posts
Posted 24 January 2013 - 01:32 PM
Its so you can easily see were a section of code starts and ends, it's a standard in programing. You can easily get lost in your code when its thousands of lines long
7508 posts
Australia
Posted 24 January 2013 - 01:33 PM
whitespace actually has no functional use in modern day programming languages as the compiler just ignores it. however I ask you this, which of the following is easier to read
No whitespace:
With whitespace:
EDIT: It also makes it easier to tell when you have forgot to put an end for a block.
No whitespace:
Spoiler
local function startup()
local sw, sh = term.getSize()
clear()
if http then
updateClient()
else
drawImage( logo, 0, -2 )
setColors( colors.white, colors.red )
centerWrite( "Unable to connect to the internet", sh - 5 )
centerWrite( "ensure the http api is enabled", sh - 4 )
setColors ( colors.white, colors.black )
local timeout = os.startTimer( 1 )
local count = 10
while count ~= 0 do
centerWrite( "Press enter to quit", sh - 3 )
clearLine( sh - 2 )
centerWrite( "Continuing in "..count, sh - 2 )
local e, p = os.pullEventRaw()
if e == "timer" and p == timeout then
count = count - 1
timeout = os.startTimer( 1 )
elseif e == "key" and p == 28 then
thankYouQuit()
clear( colors.black )
error()
end
end
end
mainLoop()
end
With whitespace:
Spoiler
local function startup()
local sw, sh = term.getSize()
clear()
if http then
updateClient()
else
drawImage( logo, 0, -2 )
setColors( colors.white, colors.red )
centerWrite( "Unable to connect to the internet", sh - 5 )
centerWrite( "ensure the http api is enabled", sh - 4 )
setColors ( colors.white, colors.black )
local timeout = os.startTimer( 1 )
local count = 10
while count ~= 0 do
centerWrite( "Press enter to quit", sh - 3 )
clearLine( sh - 2 )
centerWrite( "Continuing in "..count, sh - 2 )
local e, p = os.pullEventRaw()
if e == "timer" and p == timeout then
count = count - 1
timeout = os.startTimer( 1 )
elseif e == "key" and p == 28 then
thankYouQuit()
clear( colors.black )
error()
end
end
end
mainLoop()
end
EDIT: It also makes it easier to tell when you have forgot to put an end for a block.
Edited on 24 January 2013 - 12:35 PM
604 posts
Spring Hill, Fl
Posted 24 January 2013 - 01:36 PM
Is there a specific way to use whitespace or everyone has there own way of using it?
7508 posts
Australia
Posted 24 January 2013 - 01:37 PM
everyone normally varies… some use 2 space tabs, some use 4 space tabs, etc.
also there are some languages, such as Python that require correct indenting to delimit functions
but convention says that indentation is done in a block, i.e. if, while, repeats, functions etc
read this http://lua-users.org/wiki/LuaStyleGuide
also there are some languages, such as Python that require correct indenting to delimit functions
but convention says that indentation is done in a block, i.e. if, while, repeats, functions etc
read this http://lua-users.org/wiki/LuaStyleGuide
604 posts
Spring Hill, Fl
Posted 24 January 2013 - 01:50 PM
So is this maybe a good example?: (Im using my death o meter in my sign.)
print("Is P4 awsome?")
local input = read()
if input == "Yes." then
print("Well good!Ill give you a diamond out of that dispenser!")
sleep(1.5)
redstone.setOutput("right", true)
sleep(1)
redstone.setOutput("right", false)
else
print("Well,Il atleast give you something..")
sleep(3)
print("LAAAAAAAAAAVAAAAAAAA!!!!")
redstone.setOutput("top", true)
sleep(7)
redstone.setOutput("top", false)
end
sleep(10)
term.clear()
term.setCursorPos(1,1)
print("Thank you for using P4's Death-O-Meter!")
1688 posts
'MURICA
Posted 24 January 2013 - 02:30 PM
I'll be honest, that's probably worse. The general rule in tabbing is to tab after an if/for/while/repeat statement, and remove a tab on an end.
More information on commonly accepted tabbing styles (the Formatting section): http://lua-users.org...i/LuaStyleGuide
if condition then
while condition do
for i=1, 19 do
repeat
stuff()
until condition
end
end
end
More information on commonly accepted tabbing styles (the Formatting section): http://lua-users.org...i/LuaStyleGuide
2447 posts
Posted 24 January 2013 - 02:32 PM
snip
*SCREAMS*
7508 posts
Australia
Posted 24 January 2013 - 02:48 PM
Haha same link I suggested :P/>More information on commonly accepted tabbing styles (the Formatting section): http://lua-users.org...i/LuaStyleGuide
Couldn't agree more!snip
*SCREAMS*
180 posts
Posted 24 January 2013 - 03:59 PM
P4isHere:
Great example!
I took your program and its spacing, and copy/pasted it 10 times.
Here it is: http://pastebin.com/wahjfhj0
I've changed one "end" command in just one of those 10 copies. It should take you no more than 5 seconds to find it.
Reply back with which "end" line number I changed, and how long it took you to find it. Remember, it should take no more than 5 seconds to do this!
Every second and minute longer than the first 5 seconds is the answer to your question "why is it useful" :}
Great example!
I took your program and its spacing, and copy/pasted it 10 times.
Here it is: http://pastebin.com/wahjfhj0
I've changed one "end" command in just one of those 10 copies. It should take you no more than 5 seconds to find it.
Reply back with which "end" line number I changed, and how long it took you to find it. Remember, it should take no more than 5 seconds to do this!
Every second and minute longer than the first 5 seconds is the answer to your question "why is it useful" :}