现在让我们看看通过 Cargo 构建和运行 “Hello, world!” 程序有什么不同！在 hello_cargo 目录 下，输入下面的命令来构建项目： $ cargo build Compiling hello_cargo v0.1.0 (file:///projects/hello_cargo) Finished dev [unoptimized + debuginfo] target(s) 的输出。Cargo 发现文件并没有被 改变，所以它并没有重新构建，而是直接运行了二进制文件。如果修改了源文件的话，Cargo 会在运行之前重新构建项目，并会出现像这样的输出： $ cargo run Compiling hello_cargo v0.1.0 (file:///projects/hello_cargo) Finished dev [unoptimized + debuginfo] target(s) println!("Hello, world!"); } 现在使用 cargo run 命令，一步完成 “Hello, world!” 程序的编译和运行： $ cargo run Compiling guessing_game v0.1.0 (file:///projects/guessing_game) Finished `dev` profile [unoptimized +

Getting Started Julia installation is straightforward, whether using precompiled binaries or compiling from source. Download and install Julia by following the instructions at https://julialang.org/downloads/ y::Float64. The point of compiling twice is performance: the methods that get called for + (which mysum uses) vary depending on the specific types of x and y, and by compiling different specializations take several seconds to load because executing all of the statements in a module often involves compiling a large amount of code. Julia creates precompiled caches of the module to reduce this time. Precompiled

Getting Started Julia installation is straightforward, whether using precompiled binaries or compiling from source. Download and install Julia by following the instructions at https://julialang.org/downloads/ y::Float64. The point of compiling twice is performance: the methods that get called for + (which mysum uses) vary depending on the specific types of x and y, and by compiling different specializations take several seconds to load because executing all of the statements in a module often involves compiling a large amount of code. Julia creates precompiled caches of the module to reduce this time. Precompiled

Getting Started Julia installation is straightforward, whether using precompiled binaries or compiling from source. Download and install Julia by following the instructions at https://julialang.org/install/ y::Float64. The point of compiling twice is performance: the methods that get called for + (which mysum uses) vary depending on the specific types of x and y, and by compiling different specializations take several seconds to load because executing all of the statements in a module often involves compiling a large amount of code. Julia creates precompiled caches of the module to reduce this time. Precompiled

Getting Started Julia installation is straightforward, whether using precompiled binaries or compiling from source. Download and install Julia by following the instructions at https://julialang.org/install/ y::Float64. The point of compiling twice is performance: the methods that get called for + (which mysum uses) vary depending on the specific types of x and y, and by compiling different specializations take several seconds to load because executing all of the statements in a module often involves compiling a large amount of code. Julia creates precompiled caches of the module to reduce this time. Precompiled

Getting Started Julia installation is straightforward, whether using precompiled binaries or compiling from source. Download and install Julia by following the instructions at https://julialang.org/install/ y::Float64. The point of compiling twice is performance: the methods that get called for + (which mysum uses) vary depending on the specific types of x and y, and by compiling different specializations take several seconds to load because executing all of the statements in a module often involves compiling a large amount of code. Julia creates precompiled caches of the module to reduce this time. Precompiled

Getting Started Julia installation is straightforward, whether using precompiled binaries or compiling from source. Download and install Julia by following the instructions at https://julialang.org/install/ y::Float64. The point of compiling twice is performance: the methods that get called for + (which mysum uses) vary depending on the specific types of x and y, and by compiling different specializations take several seconds to load because executing all of the statements in a module often involves compiling a large amount of code. Julia creates precompiled caches of the module to reduce this time. Precompiled

Getting Started Julia installation is straightforward, whether using precompiled binaries or compiling from source. Download and install Julia by following the instructions at https://julialang.org/install/ y::Float64. The point of compiling twice is performance: the methods that get called for + (which mysum uses) vary depending on the specific types of x and y, and by compiling different specializations take several seconds to load because executing all of the statements in a module often involves compiling a large amount of code. Julia creates precompiled caches of the module to reduce this time. Precompiled

Getting Started Julia installation is straightforward, whether using precompiled binaries or compiling from source. Download and install Julia by following the instructions at https://julialang.org/downloads/ y::Float64. The point of compiling twice is performance: the methods that get called for + (which mysum uses) vary depending on the specific types of x and y, and by compiling different specializations take several seconds to load because executing all of the statements in a module often involves compiling a large amount of code. Julia creates precompiled caches of the module to reduce this time. Precompiled

Getting Started Julia installation is straightforward, whether using precompiled binaries or compiling from source. Download and install Julia by following the instructions at https://julialang.org/install/ y::Float64. The point of compiling twice is performance: the methods that get called for + (which mysum uses) vary depending on the specific types of x and y, and by compiling different specializations take several seconds to load because executing all of the statements in a module often involves compiling a large amount of code. Julia creates precompiled caches of the module to reduce this time. Precompiled