从5.3开始，Lua format.string不能将float格式化为十进制(％d) [英] Lua format.string can't format float as decimal (%d) as of 5.3

问题描述

我最近从Lua 5.2.3升级到5.3.1，但是我发现执行string.format的所有脚本如果尝试使用%d

I recently upgraded from Lua 5.2.3 to 5.3.1 but I noticed all my scripts that perform a string.format started failing if it tried to format a float using %d

local anExampleString = string.format("Sample Number: %d",10.100000001) -- Fails on 5.3.1, works on 5.2.3
local aWorkingString  = string.format("Sample Number: %.0f",10.100000001) -- Works on 5.3.1

这是设计使然吗?我似乎找不到任何地方记录的更改.

Is this by design? I can't seem to find the change documented anywhere.

推荐答案

在Lua 5.3中，number类型具有两个子类型integer和float.

In Lua 5.3, the number type has two subtypes, integer and float.

来自 string.format

选项A，a，E，e，f，G和g都期望数字作为参数.选项c，d，i，o，u，X和x期望为整数.

Options A, a, E, e, f, G, and g all expect a number as argument. Options c, d, i, o, u, X, and x expect an integer.

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