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author | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2018-08-24 10:17:54 -0300 |
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committer | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2018-08-24 10:17:54 -0300 |
commit | 8c8a91f2ef7acccb99e3737913faad8d48b39571 (patch) | |
tree | 0807151944b7f7fd00eedfcfe94b4ee26fe25b21 /luaconf.h | |
parent | f99509581ee73c1c2dbddb3398e87c098771d31f (diff) | |
download | lua-8c8a91f2ef7acccb99e3737913faad8d48b39571.tar.gz lua-8c8a91f2ef7acccb99e3737913faad8d48b39571.tar.bz2 lua-8c8a91f2ef7acccb99e3737913faad8d48b39571.zip |
Deprecated the emulation of '__le' using '__lt'
As hinted in the manual for Lua 5.3, the emulation of the metamethod
for '__le' using '__le' has been deprecated. It is slow, complicates
the logic, and it is easy to avoid this emulation by defining a proper
'__le' function.
Moreover, often this emulation was used wrongly, with a programmer
assuming that an order is total when it is not (e.g., NaN in
floating-point numbers).
Diffstat (limited to 'luaconf.h')
-rw-r--r-- | luaconf.h | 8 |
1 files changed, 7 insertions, 1 deletions
@@ -295,7 +295,7 @@ | |||
295 | */ | 295 | */ |
296 | 296 | ||
297 | /* | 297 | /* |
298 | @@ LUA_COMPAT_5_3 controls other macros for compatibility with Lua 5.2. | 298 | @@ LUA_COMPAT_5_3 controls other macros for compatibility with Lua 5.3. |
299 | ** You can define it to get all options, or change specific options | 299 | ** You can define it to get all options, or change specific options |
300 | ** to fit your specific needs. | 300 | ** to fit your specific needs. |
301 | */ | 301 | */ |
@@ -316,6 +316,12 @@ | |||
316 | */ | 316 | */ |
317 | #define LUA_COMPAT_APIINTCASTS | 317 | #define LUA_COMPAT_APIINTCASTS |
318 | 318 | ||
319 | /* | ||
320 | @@ LUA_COMPAT_LT_LE controls the emulation of the '__le' metamethod | ||
321 | ** using '__lt'. | ||
322 | */ | ||
323 | #define LUA_COMPAT_LT_LE | ||
324 | |||
319 | #endif /* } */ | 325 | #endif /* } */ |
320 | 326 | ||
321 | 327 | ||