Julia中文社区 2019 夏季见面会：活动回顾
Julia 一开始就是为高性能设计的。 Julia 程序被 LLVM 编译成高效的多平台机器码。
Julia 使用多分派范式, 容易表达很多面向对象和函数编程的模式。 标准库提供异步输入/输出、进程控制、日志、性能分析、包管理器， 还有更多优秀的库等你发现。
Julia 拥有高阶的语法。 这让具有不同编程语言背景和经验的程序员都能使用它。
Julia 是开源免费的，所有的源代码都可以在 Github 上看到。
Julia is designed from the ground up to be very good at numerical and scientific computing. This can be seen in the abundance of scientific tooling written in Julia, such as the state-of-the-art differential equations ecosystem (DiffEq), optimization tools (JuMP and Optim), iterative linear solvers (IterativeSolvers) and many more, that can drive all your simulations.Julia also offers a number of domain-specific ecosystems, such as in biology (BioJulia), operations research (JuliaOpt), quantum physics (QuantumOptics), nonlinear dynamics (JuliaDynamics), quantitative economics (QuantEcon), astronomy (JuliaAstro) and ecology (EcoJulia). With a set of highly enthused developers and maintainers from various parts of the scientific community, this ecosystem will only continue to get bigger and bigger.
The Julia data ecosystem lets you load multidimensional datasets quickly, perform aggregations, joins and preprocessing operations in parallel, and save them to disk in efficient formats. You can also perform online computations on streaming data. Whether you're looking for the convenient and familiar DataFrames, or a new approach with JuliaDB, Julia provides you a rich variety of tools. The Queryverse package acts a meta package through which you can access these tools with Julian APIs. In addition to working with tabular data, the JuliaGraphs packages make it easy to work with combinatorial data.
Data visualization has a complicated history. Plotting software makes trade-offs between features and simplicity, speed and beauty, and a static and dynamic interface. Some packages make a display and never change it, while others make updates in real-time.
Plots.jl is a visualization interface and toolset. It sits above other backends, like GR or PyPlot, connecting commands with implementation. If one backend does not support your desired features or make the right trade-offs, you can just switch to another backend with one command. No need to change your code. No need to learn a new syntax. Plots might be the last plotting package you ever learn.