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util/xpcall.lua @ 10592:9918b4b0cd58
util.array: Fix equality metamethod in Lua 5.3
Lua 5.2 only used the __eq metamethod if both operands have the same
__eq, but Lua 5.3 will pick one from either operands that has one as
long as both are tables.
This results in array() == {} and all sorts of odd behavior, including
array() == util.json.null.
<MattJ> I think [array() == {}] should have the same semantics as {} == {}
author | Kim Alvefur <zash@zash.se> |
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date | Wed, 15 Jan 2020 21:08:01 +0100 |
parent | 9561:cfc7b2f7251e |
child | 12975:d10957394a3c |
rev | line source |
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9561
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
1 local xpcall = xpcall; |
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
2 |
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
3 if select(2, xpcall(function (x) return x end, function () end, "test")) ~= "test" then |
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
4 xpcall = require"util.compat".xpcall; |
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
5 end |
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
6 |
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
7 return { |
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
8 xpcall = xpcall; |
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
9 }; |