diff options
Diffstat (limited to 'lua.html.markdown')
| -rw-r--r-- | lua.html.markdown | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/lua.html.markdown b/lua.html.markdown index ac7883b2..f11d67a8 100644 --- a/lua.html.markdown +++ b/lua.html.markdown @@ -17,10 +17,7 @@ filename: learnlua.lua -- 1. Variables and flow control. ---------------------------------------------------- -num = 42 -- All numbers are doubles. --- Don't freak out, 64-bit doubles have 52 bits for --- storing exact int values; machine precision is --- not a problem for ints that need < 52 bits. +num = 42 -- Numbers can be integer or floating point. s = 'walternate' -- Immutable strings like Python. t = "double-quotes are also fine" @@ -58,7 +55,7 @@ foo = anUnknownVariable -- Now foo = nil. aBoolValue = false -- Only nil and false are falsy; 0 and '' are true! -if not aBoolValue then print('twas false') end +if not aBoolValue then print('it was false') end -- 'or' and 'and' are short-circuited. -- This is similar to the a?b:c operator in C/js: @@ -193,7 +190,7 @@ end -- A table can have a metatable that gives the table -- operator-overloadish behavior. Later we'll see --- how metatables support js-prototypey behavior. +-- how metatables support js-prototype behavior. f1 = {a = 1, b = 2} -- Represents the fraction a/b. f2 = {a = 2, b = 3} @@ -364,7 +361,7 @@ end)() -- locals inside mod.lua are invisible outside it. -- This works because mod here = M in mod.lua: -mod.sayHello() -- Says hello to Hrunkner. +mod.sayHello() -- Prints: Why hello there Hrunkner -- This is wrong; sayMyName only exists in mod.lua: mod.sayMyName() -- error @@ -402,11 +399,11 @@ If you need support join the official Lua [mailing list](https://www.lua.org/lua I was excited to learn Lua so I could make games with the <a href="http://love2d.org/">Love 2D game engine</a>. That's the why. -I started with <a href="https://ebens.me/post/lua-for-programmers-part-1/">BlackBulletIV's Lua for programmers</a>. +I started with <a href="https://ebens.me/posts/lua-for-programmers-part-1/">BlackBulletIV's Lua for programmers</a>. Next I read the official <a href="http://www.lua.org/pil/contents.html">Programming in Lua</a> book. That's the how. -It might be helpful to check out the <a href="http://lua-users.org/files/wiki_insecure/users/thomasl/luarefv51.pdf">Lua short +It might be helpful to check out the <a href="http://lua-users.org/wiki/LuaShortReference">Lua short reference</a> on lua-users.org. The main topics not covered are standard libraries: |