The Julia Language V1.12.0-rc1 The Julia Project July 14, 2025Contents Contents i I Manual 1 1 Julia 1.12-rc1 Documentation 2 1.1 Important Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2042Part I Manual 1Chapter 1 Julia 1.12-rc1 Documentation Welcome to the documentation for Julia 1.12-rc1. Work in progress! This documentation is for an unreleased, in-development changed since the last release. Note The documentation is also available in PDF format: julia-1.12.0-rc1.pdf. 1.1 Important Links Below is a non-exhaustive list of links that will be useful as you learn

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331 15.4. Rc 引用计数智能指针 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 通常会指定捕获其环境的闭包作为迭代器适配器 的参数。 作为一个例子，我们使用 filter 方法来获取一个闭包。该闭包从迭代器中获取一项并返回一 个 bool。如果闭包返回 true，其值将会包含在 filter 提供的新迭代器中。如果闭包返回 false，其值不会被包含。 示例 13-16 中使用 filter 和一个捕获环境中变量 shoe_size 的闭包来遍历一个 Shoe 结构体 集合。它只会返回指定鞋码的鞋子。 String, } fn shoes_in_size(shoes: Vec, shoe_size: u32) -> Vec { shoes.into_iter().filter(|s| s.size == shoe_size).collect() } #[cfg(test)] mod tests { use super::*; #[test]

build alpha- numeric annotations. For example, v"0.2.1-rc1+win64" is broken into major version 0, minor version 2, patch version 1, pre-release rc1 and build win64. When entering a version literal, everything above example the code would only run with stable 0.2 versions, and exclude such versions as v"0.3.0-rc1". In order to also allow for unstable (i.e. pre-release) 0.2 versions, the lower bound check should versions, e.g. VERSION > v"0.2-rc1+" can be used to mean any version above 0.2-rc1 and any of its builds: it will return false for version v"0.2-rc1+win64" and true for v"0.2-rc2". It is good practice to

build alpha- numeric annotations. For example, v"0.2.1-rc1+win64" is broken into major version 0, minor version 2, patch version 1, pre-release rc1 and build win64. When entering a version literal, everything above example the code would only run with stable 0.2 versions, and exclude such versions as v"0.3.0-rc1". In order to also allow for unstable (i.e. pre-release) 0.2 versions, the lower bound check should versions, e.g. VERSION > v"0.2-rc1+" can be used to mean any version above 0.2-rc1 and any of its builds: it will return false for version v"0.2-rc1+win64" and true for v"0.2-rc2". It is good practice to

semantic versioning 2.0.0-rc2, and therefore are composed of major, minor and patch numeric values, followed by pre-release and build alphanumeric annotations. For example, v"0.2.1-rc1+win64" is broken into into major version 0, minor ver- sion 2, patch version 1, pre-release rc1 and build win64. When entering a version literal, everything except the major version number is optional, therefore e.g. v"0.2" above example the code would only run with stable 0.2 versions, and exclude such versions as v"0.3.0-rc1". In order to also allow for unstable (i.e. pre-release) 0.2 versions, the lower bound check should

semantic versioning 2.0.0-rc2, and therefore are composed of major, minor and patch numeric values, followed by pre-release and build alphanumeric annotations. For example, v"0.2.1-rc1+win64" is broken into into major version 0, minor ver- sion 2, patch version 1, pre-release rc1 and build win64. When entering a version literal, everything except the major version number is optional, therefore e.g. v"0.2" above example the code would only run with stable 0.2 versions, and exclude such versions as v"0.3.0-rc1". In order to also allow for unstable (i.e. pre-release) 0.2 versions, the lower bound check should

semantic versioning 2.0.0-rc2, and therefore are composed of major, minor and patch numeric values, followed by pre-release and build alphanumeric annotations. For example, v"0.2.1-rc1+win64" is broken into into major version 0, minor ver- sion 2, patch version 1, pre-release rc1 and build win64. When entering a version literal, everything except the major version number is optional, therefore e.g. v"0.2" above example the code would only run with stable 0.2 versions, and exclude such versions as v"0.3.0-rc1". In order to also allow for unstable (i.e. pre-release) 0.2 versions, the lower bound check should

semantic versioning 2.0.0-rc2, and therefore are composed of major, minor and patch numeric values, followed by pre-release and build alphanumeric annotations. For example, v"0.2.1-rc1+win64" is broken into into major version 0, minor ver- sion 2, patch version 1, pre-release rc1 and build win64. When entering a version literal, everything except the major version number is optional, therefore e.g. v"0.2" above example the code would only run with stable 0.2 versions, and exclude such versions as v"0.3.0-rc1". In order to also allow for unstable (i.e. pre-release) 0.2 versions, the lower bound check should

build al- phanumeric annotations. For example, v"0.2.1-rc1+win64" is broken into major version 0, minor version 2, patch version 1, pre-release rc1 and build win64. When entering a version literal, everything above example the code would only run with stable 0.2 versions, and exclude such versions as v"0.3.0-rc1". In order to also allow for unstable (i.e. pre-release) 0.2 versions, the lower bound check should versions, e.g. VERSION > v"0.2-rc1+" can be used to mean any version above 0.2-rc1 and any of its builds: it will return false for version v"0.2-rc1+win64" and true for v"0.2-rc2". It is good practice to

build al- phanumeric annotations. For example, v"0.2.1-rc1+win64" is broken into major version 0, minor version 2, patch version 1, pre-release rc1 and build win64. When entering a version literal, everything above example the code would only run with stable 0.2 versions, and exclude such versions as v"0.3.0-rc1". In order to also allow for unstable (i.e. pre-release) 0.2 versions, the lower bound check should versions, e.g. VERSION > v"0.2-rc1+" can be used to mean any version above 0.2-rc1 and any of its builds: it will return false for version v"0.2-rc1+win64" and true for v"0.2-rc2". It is good practice to