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81. Re: [hack] nil.foo = nil (score: 281)

Author: Andrew Starks <andrew.starks@...>

Date: Thu, 1 May 2014 22:58:52 -0500

If you're going to hijack a thread, you may as well do it brilliantly. :) More kungfu: ```lua debug.setmetatable(nil, {__index = function(t, i) return nil end}) local t = {} local m = { m_field = "he

82. Re: Lookup nil table index (score: 274)

Author: lua@...

Date: Thu, 30 Nov 2006 20:33:53 +0100

* On 2006-11-30 Michael Wolf <miwo@gmx.at> wrote : [ snipped code ] Yes, I use something similar at this moment ( find("thing.foo.bar.this.that") ), but for code clarity I was looking for a bit less

83. Re: Lookup nil table index (score: 274)

Author: lua@...

Date: Thu, 30 Nov 2006 17:25:06 +0100

* On 2006-11-30 Roberto Ierusalimschy <roberto@inf.puc-rio.br> wrote : Yes, that works for me, thank you very much! -- ^X^Cy^K^X^C^C^C^C

84. Re: Lookup nil table index (score: 274)

Author: roberto@... (Roberto Ierusalimschy)

Date: Thu, 30 Nov 2006 14:03:04 -0200

You can achive this by setting an __index metamethod for nil, but you will have to set it through C. (More exactly, you need C to set a metatable for nil. After that you can use Lua to set the metam

85. Lookup nil table index (score: 274)

Author: lua@...

Date: Thu, 30 Nov 2006 16:40:46 +0100

Hello, I'm working on code with quite deep tables. When referring to an element in the table, I use the table keys joined by dots, eg: a = thing.foo.bar.this.that When one of the indicated elements d

86. Re: [proposal] Using nil/NaN as table index (score: 269)

Author: Dirk Laurie <dirk.laurie@...>

Date: Tue, 8 Apr 2014 21:41:26 +0200

2014-04-08 18:57 GMT+02:00 Peter Melnichenko <petjamelnik@yandex.ru>: Raw table indexing is just an efficient way of implementing direct search. I.e. rawget(tbl,key) is equivalent to: function lookup

87. Observations about a index getters (score: 263)

Author: Andrew Starks <andrew.starks@...>

Date: Fri, 5 Dec 2014 22:20:20 -0600

I have an object model that I was hacking up. I decided to implement a penlight-like 'sorta private' getter/setter model. Where setting and getting can be independently controlled by prefixing fields

88. Re: Must "attempt to get length of a number value" be an error? (score: 213)

Author: Philippe Verdy <verdy_p@...>

Date: Thu, 9 May 2019 15:20:19 +0200

89. Memoizing Functions - yet another attempt (score: 198)

Author: Andrew Starks <andrew.starks@...>

Date: Sat, 14 Dec 2013 16:07:46 -0600

Nah. More of a puzzlement really. Let take a closer look at that Microlight's memoize function [1]: (1) It mandates one parameter (not zero, not multiple parameters, just one, not nil, parameter) [2

90. Re: Memoizing Functions - yet another attempt (score: 198)

Author: Petite Abeille <petite.abeille@...>

Date: Sat, 14 Dec 2013 22:57:53 +0100

Nah. More of a puzzlement really. Let take a closer look at that Microlight's memoize function [1]: (1) It mandates one parameter (not zero, not multiple parameters, just one, not nil, parameter) [2]

91. RE: Undefined variables returning nil (score: 192)

Author: "Ivo Beltchev" <ivo@...>

Date: Tue, 19 Mar 2013 17:00:49 -0700

I've recently struggled with this problem. I want to create inheritance of environments. I set the parent environment as __index for the child environment. So when you access a variable from the chil

92. Re: attempt to perform arithmetic on field '_income' (a table value) (score: 189)

Author: Choonster TheMage <choonster.2010@...>

Date: Wed, 18 Sep 2013 23:24:47 +1000

You need to add self as the first parameter to the functions or define them with colon syntax (which gives them an implicit first parameter self). i.e. the tax:init method could be declared like this

93. Re: attempt to perform arithmetic on field '_income' (a table value) (score: 189)

Author: Dirk Laurie <dirk.laurie@...>

Date: Wed, 18 Sep 2013 15:09:55 +0200

Thus: function tax:init (pIncome, pRate) self._income = pIncome self._rate = pRate end 2013/9/18 Jayanth Acharya <jayachar88@gmail.com>:

94. Re: attempt to perform arithmetic on field '_income' (a table value) (score: 189)

Author: Jayanth Acharya <jayachar88@...>

Date: Wed, 18 Sep 2013 18:32:26 +0530

And change all the tax.xxx statements to self.xxx statements. Thanks Dirk, but changing tax to self inside the functions, I get this error: attempt to index global 'self' (a nil value)

95. Re: Must "attempt to get length of a number value" be an error? (score: 184)

Author: Philippe Verdy <verdy_p@...>

Date: Wed, 8 May 2019 05:00:10 +0200

abs(n) is as much arbitrary as the number of digits, i.e. roughly log10(abs(n) for integers... This still does not work properly for non-integers, or large integers whose integral precision is lost b

96. Re: Undefined variables returning nil (score: 174)

Author: Kevin Martin <kev82@...>

Date: Tue, 19 Mar 2013 23:29:05 +0000

It was meant as a rhetorical question, to ask yourself. However, to comment on your suggestions: 1) The contains function is clearly a bad idea. How would you implement it? 2) The in operator is bett

97. Re: cannot index a table loaded as a chunk (score: 173)

Author: Ben Sunshine-Hill <sneftel@...>

Date: Fri, 20 Aug 2004 03:30:49 -0700

Well, the Lua side looks fine. I suggest you check the return value of lua_dofile to see if the file is being loaded in appropriately.

98. Re: cannot index a table loaded as a chunk (score: 173)

Author: "Michael Newberry" <mnewberry@...>

Date: Fri, 20 Aug 2004 03:00:12 -0700

I show the source code below. I understand the difference between LuaL_loadfile and lua_dofile. Originally, I tried using lua_dofile and that did not work so I tried luaL_loadfile and that didn;t wor

99. Re: Propsoal: a lua dialect without nil (score: 172)

Author: Matthew Frazier <leafstormrush@...>

Date: Tue, 15 Feb 2011 18:00:47 -0500

I agree - right now, nil is not a first-class value. It's more like a first-and-a-half-class value. Because, as Julien Duminil mentioned above, nil has just enough first-class value properties (havi

100. Re: Embedded 'nil' values - a suggestion (score: 172)

Author: "Hugh O'Byrne" <hobyrne@...>

Date: Thu, 30 Mar 2006 13:23:35 -0500

The merging of all of these concepts into one atomic type, however, has the collision of embedded nils - tables-as-hashes need a way to remove a key entirely; tables-as-arrays need a way to store an