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App Inventor 2 SQLite 拓展:超流行兼容主流SQL语法的迷你本地数据库引擎...
...名,这些名称在任何数据库中都不建议使用中文。
与 TaifunSQLite 功能类似,但TaifunSQLite是收费的,美刀。
1.2版本更新(2025/09/15)
默认sqlite3
优化库导入导出方法
.aix 拓展下载:
cn.fun123.SQ...
A numeric string as array key in PHP
...as "08").
Addendum
Because of the comments below, I thought it would be fun to point out that the behaviour is similar but not identical to JavaScript object keys.
foo = { '10' : 'bar' };
foo['10']; // "bar"
foo[10]; // "bar"
foo[012]; // "bar"
foo['012']; // undefined!
...
Create aar file in Android Studio
... answered Oct 16 '16 at 18:58
cn123hcn123h
2,16511 gold badge1818 silver badges1414 bronze badges
...
Difference between == and ===
...this your custom class needs to conform Equatable protocol and it's static func == (lhs:, rhs:) -> Bool function
Let's look at example:
class Person : Equatable {
let ssn: Int
let name: String
init(ssn: Int, name: String) {
self.ssn = ssn
self.name = name
}
...
App Inventor 2 SQLite 拓展:超流行兼容主流SQL语法的迷你本地数据库引擎...
...名,这些名称在任何数据库中都不建议使用中文。
与 TaifunSQLite 功能类似,但TaifunSQLite是收费的,美刀。
1.3版本更新(2025/09/24)
查询SQL结果优化为AppInventor标准的二维列表,通过列表索引可以取到单元格...
App Inventor 2 SQLite 拓展:超流行兼容主流SQL语法的迷你本地数据库引擎...
...名,这些名称在任何数据库中都不建议使用中文。
与 TaifunSQLite 功能类似,但TaifunSQLite是收费的,美刀。
1.3版本更新(2025/09/24)
查询SQL结果优化为AppInventor标准的二维列表,通过列表索引可以取到单元格...
How to read data when some numbers contain commas as thousand separator?
...tomatically. First create a new class definition, then create a conversion function and set it as an "as" method using the setAs function like so:
setClass("num.with.commas")
setAs("character", "num.with.commas",
function(from) as.numeric(gsub(",", "", from) ) )
Then run read.csv like:
...
Your build failed due to an error in the AAPT stage, not because of an...
...文导致的,换成英文的就ok,这个问题先记录下来,后续fun23.cn平台可以解决。
----------------以下是参考资料-----------
需要注意的事项:该项目已超过 30MB 的最大大小该项目已超出建议的最大 10 个屏幕该项目有一个包含过多文...
Why does PHP consider 0 to be equal to a string?
...r, which will check the type and will not implicitly typecast.
P.S: a PHP fun fact: a == b does not imply that b == a. Take your example and reverse it: if ("e" == $item['price']) will never actually be fulfilled provided that $item['price'] is always an integer.
...
How to update a plot in matplotlib?
... the units in the time scale (x-axis) and then I recalculate and call this function plots() . I want the plot to simply update, not append another plot to the figure.
...
