and Identifier Scopes §33. Expression Evaluation Orders §34. Value Copy Costs in Go §35. Bounds Check Elimination Concurrent Programming §36. Concurrency Synchronization Overview §37. Channel Use Cases to) output code warnings (a.k.a., possible code logic mistakes). We can use the go vet command to check and report such warnings. We can (and should often) use the go fmt command to format Go source code int(^uint(0) >> 1) A similar method can be used to get the number of bits of a native word, and check the current OS is 32-bit or 64-bit. // NativeWordBits is 64 or 32. const NativeWordBits = 32 << (^uint(0)

and Identifier Scopes §33. Expression Evaluation Orders §34. Value Copy Costs in Go §35. Bounds Check Elimination Concurrent Programming §36. Concurrency Synchronization Overview §37. Channel Use Cases to) output code warnings (a.k.a., possible code logic mistakes). We can use the go vet command to check and report such warnings. We can (and should often) use the go fmt command to format Go source code int(^uint(0) >> 1) A similar method can be used to get the number of bits of a native word, and check the current OS is 32-bit or 64-bit. 1| // NativeWordBits is 64 or 32. 2| const NativeWordBits =

- assignment form，静态单赋值形式）的后端。 SSA使得Go编译器可以有效利用 诸如BCE ? （bounds check elimination，边界检查消除）和CSE ? （common subexpression elimination，公共子表达式消除）等优化。 BCE可以避免很多不 必要的边界检查，CSE可以避免很多重复表达式的计算，从而使得编译器编译 出的程序执行效率更高。有时候这些优化的效果非常明显。 出的程序执行效率更高。有时候这些优化的效果非常明显。 本文将展示一些例子来解释边界检查消除在官方标准编译器1.7+中的表现。 对于Go官方工具链1.7+，我们可以使用编译器选项-gcflags="- d=ssa/check_bce"来列出哪些代码行仍然需要边界检查。 例子1 1| // example1.go 2| package main 3| 4| func f1(s []int) { 5| _ = s[0] _ = a[4] // 第22行： 边界检查消除了！ 23 | } 24 | 25 | func main() {} $ go run -gcflags="-d=ssa/check_bce" example1.go ./example1.go:5: Found IsInBounds ./example1.go:6: Found IsInBounds ./example1.go:7:

gle- assignment form，静态单赋值形式）的后端。 SSA使得Go编译器可以有效利用 诸如BCE （bounds check elimination，边界检查消除）和CSE （common subexpression elimination，公共子表达式消除）等优化。 BCE可以避免很多不 必要的边界检查，CSE可以避免很多重复表达式的计算，从而使得编译器编译 出的程序执行效率更高。有时候这些优化的效果非常明显。 本文将展示一些例子来解释边界检查消除在官方标准编译器1.7+中的表现。 对 于 Go 官 方 工 具 链 1.7+ ， 我 们 可 以 使 用 编 译 器 选 项 -gcflags="- d=ssa/check_bce"来列出哪些代码行仍然需要边界检查。 例子1 1. // example1.go 2. package main 3. 4. func f1(s []int) { 5. [5]int) { 22. _ = a[4] // 第22行： 边界检查消除了！ 23. } 24. 25. func main() {} $ go run -gcflags="-d=ssa/check_bce" example1.go ./example1.go:5: Found IsInBounds ./example1.go:6: Found IsInBounds ./example1.go:7:

browser with all the benefits of WebAssembly. 如何入门 Get started with Kotlin/Wasm in IntelliJ IDEA Check out the GitHub repository with Kotlin/Wasm examples 库支持 You can use the Kotlin standard library real-time code insights. It is now the preferred method for working with Kotlin notebooks. Be sure to check out our blog post about it. Jupyter Kotlin 内核 Jupyter Notebook 是一个开源 Web 应用程序， 它允许创建与共享包含代码、可 smart coding assistance when writing code, and share results as interactive or static reports. Check out a sample report. Sign up and use Kotlin with a free Datalore Community account. Zeppelin Kotlin

文件中的错误信息。 bash build_chain.sh -l "127.0.0.1:4" -p 30300,20200,8545 Checking fisco-bcos binary... Binary check passed. ============================================================== Generating CA key... ===== servers, it is usually different from p2p_ip. ; You can check accessible addresses of your network card. ; Please see https://tecadmin.net/check-ip-address-ubuntu-18-04- desktop/ ; for more instructions servers, it is usually different from p2p_ip. ; You can check accessible addresses of your network card. ; Please see https://tecadmin.net/check-ip-address-ubuntu-18-04- desktop/ ; for more instructions

bash build_chain.sh -l "127.0.0.1:4" -p 30300,20200,8545 Checking fisco-bcos binary... Binary check passed. ============================================================== Generating CA key... ===== nle端 口。 配置控制台证书 重要 如果控制台配置正确，但是在CentOS系统上启动控制台出现如下错 误： Failed to connect to the node. Please check the node status and the console configuration. info|2019-01-21 17:23:32.576197| [g:1][p:264][CONSENSUS] servers, it is usually different from p2p_ip. ; You can check accessible addresses of your network card. ; Please see https://tecadmin.net/check-ip-address-ubuntu-18-04- desktop/ ; for more instructions

文件中的错误信息。 bash build_chain.sh -l "127.0.0.1:4" -p 30300,20200,8545 Checking fisco-bcos binary... Binary check passed. ============================================================== Generating CA key... ===== servers, it is usually different from p2p_ip. ; You can check accessible addresses of your network card. ; Please see https://tecadmin.net/check-ip-address-ubuntu-18-04- desktop/ ; for more instructions servers, it is usually different from p2p_ip. ; You can check accessible addresses of your network card. ; Please see https://tecadmin.net/check-ip-address-ubuntu-18-04- desktop/ ; for more instructions

build_chain.sh -l "127.0.0.1:4" -p 30300,20200,8545 -v 2.5.0 Checking fisco-bcos binary... Binary check passed. ============================================================== Generating CA key... ===== servers, it is usually different from p2p_ip. ; You can check accessible addresses of your network card. ; Please see https://tecadmin.net/check-ip-address-ubuntu-18-04- desktop/ ; for more instructions cert: 证书node.crt相对于data_path的路径。 ca_cert: ca证书文件路径。 ca_path: ca证书文件夹，多ca时需要。 check_cert_issuer：设置SDK是否只能连本机构节点，默认为开启 （check_cert_issuer=true）。 [p2p] listen_ip=0.0.0.0 listen_port=30300 node

启动所有节点 bash build_chain.sh -l "127.0.0.1:4" -p 30300,20200,8545 Checking fisco-bcos binary... Binary check passed. ============================================================== Generating CA key... ===== ext.xml 配置控制台证书 重要 如果控制台配置正确，但是在CentOS系统上启动控制台出现如下错 误： Failed to connect to the node. Please check the node status and the console configuration. 是因为使用了CentOS系统自带的JDK版本(会导致控制台与区块链节点 认证失败)，请从 OpenJDK官网 配置项详细说明参考这里。 重要 控制台配置说明 如果控制台配置正确，但是在CentOS系统上启动控制台出现如下错 误： Failed to connect to the node. Please check the node status and the console configruation. 3