我在lua有一张桌子: enUS = { LOCALE_STHOUSANDS = ",", --Thousands separator e.g. comma patNumber = "%d+["..LOCALE_STHOUSANDS.."%d]*", --regex to find a number ["PreScanPatterns"] = { ["^("..patNumber..") Armor$"] = "ARMOR", }} 所以你
enUS = { LOCALE_STHOUSANDS = ",", --Thousands separator e.g. comma patNumber = "%d+["..LOCALE_STHOUSANDS.."%d]*", --regex to find a number ["PreScanPatterns"] = { ["^("..patNumber..") Armor$"] = "ARMOR", } }
所以你看到这个表中有一整串自引用:
> LOCAL_STHOUSANDS
> patNumber
> [“^(”.. patNumber ..“)护甲$”]
如何在lua表中执行自引用?
我不想做的是必须硬替换价值观;有数百个参考:
enUS = { LOCALE_STHOUSANDS = ",", --Thousands separator e.g. comma patNumber = "%d+[,%d]*", --regex to find a number ["PreScanPatterns"] = { ["^(%d+[,%d]*) Armor$"] = "ARMOR", } }
How can i perform self-referencing in an lua table?
你没有.
Lua不是C.在构造表之前,不存在任何表条目.因为表本身尚不存在.因此,您不能在表构造函数中有一个条目引用不存在的表中的另一个条目.
如果你想减少重复输入,那么你应该使用局部变量和do / end块:
do local temp_thousands_separator = "," local temp_number_pattern = "%d+["..LOCALE_STHOUSANDS.."%d]*" enUS = { LOCALE_STHOUSANDS = temp_thousands_separator, --Thousands separator e.g. comma patNumber = "%d+["..temp_thousands_separator.."%d]*", --regex to find a number ["PreScanPatterns"] = { ["^("..temp_number_pattern..") Armor$"] = "ARMOR", } } end
do / end块在那里,以便临时变量不存在于表创建代码之外.
或者,您可以分阶段进行施工:
enUS = {} enUS.LOCALE_STHOUSANDS = ",", --Thousands separator e.g. comma enUS.patNumber = "%d+["..enUS.LOCALE_STHOUSANDS.."%d]*", --regex to find a number enUS["PreScanPatterns"] = { ["^("..enUS.patNumber..") Armor$"] = "ARMOR", }