. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272 26 处理操作系统差异 273 27 环境变量 275 27.1 文件位置 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . synchronization primitives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 709 50 常量 711 51 文件系统 715 52 I/O 与网络 731 52.1 通用 I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 地讨论类型。另一方面，在静态语言中，往往 必须标注对象的类型。但类型只在编译期才存在，而无法在运行时进行操作和表达。而在 Julia 中， 类型本身是运行时的对象，并可用于向编译器传达信息。 类型系统和多重派发是 Julia 语言最主要的特征，但一般不需要显式地手动标注或使用：函数通过函 数名称和不同类型参数的组合进行定义，在调用时会派发到最接近（most specific）的定义上去。这 样的

manpage:CHAPTER 7. STRINGS 62 i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale for code points less than 255, and from Unicode UndefVarError: `s` not defined Since s is local to the function sum_to, calling the function has no effect on the global variable s. We can also see that the update s = s + i in the for loop must have updated preserving the "programming at scale" benefits of the 1.0 behavior: global variables have no spooky effect on the meaning of code that may be far away; in the REPL copy-and- paste debugging works and beginners

manpage:CHAPTER 7. STRINGS 62 i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale for code points less than 255, and from Unicode UndefVarError: `s` not defined Since s is local to the function sum_to, calling the function has no effect on the global variable s. We can also see that the update s = s + i in the for loop must have updated preserving the "programming at scale" benefits of the 1.0 behavior: global variables have no spooky effect on the meaning of code that may be far away; in the REPL copy-and- paste debugging works and beginners

from the perlre manpage: i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale for code points less than 255, and from Unicode UndefVarError: `s` not defined in `Main` Since s is local to the function sum_to, calling the function has no effect on the global variable s. We can also see that the update s = s + i in the for loop must have updated preserving the "programming at scale" benefits of the 1.0 behavior: global variables have no spooky effect on the meaning of code that may be far away; in the REPL copy-and- paste debugging works and beginners

from the perlre manpage: i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale for code points less than 255, and from Unicode UndefVarError: `s` not defined in `Main` Since s is local to the function sum_to, calling the function has no effect on the global variable s. We can also see that the update s = s + i in the for loop must have updated preserving the "programming at scale" benefits of the 1.0 behavior: global variables have no spooky effect on the meaning of code that may be far away; in the REPL copy-and- paste debugging works and beginners

from the perlre manpage: i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale for code points less than 255, and from Unicode UndefVarError: `s` not defined in `Main` Since s is local to the function sum_to, calling the function has no effect on the global variable s. We can also see that the update s = s + i in the for loop must have updated preserving the "programming at scale" benefits of the 1.0 behavior: global variables have no spooky effect on the meaning of code that may be far away; in the REPL copy-and- paste debugging works and beginners

from the perlre manpage: i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale for code points less than 255, and from Unicode UndefVarError: `s` not defined in `Main` Since s is local to the function sum_to, calling the function has no effect on the global variable s. We can also see that the update s = s + i in the for loop must have updated preserving the "programming at scale" benefits of the 1.0 behavior: global variables have no spooky effect on the meaning of code that may be far away; in the REPL copy-and- paste debugging works and beginners

from the perlre manpage: i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale for code points less than 255, and from Unicode UndefVarError: `s` not defined in `Main` Since s is local to the function sum_to, calling the function has no effect on the global variable s. We can also see that the update s = s + i in the for loop must have updated preserving the "programming at scale" benefits of the 1.0 behavior: global variables have no spooky effect on the meaning of code that may be far away; in the REPL copy-and- paste debugging works and beginners

from the perlre manpage: i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale for code points less than 255, and from Unicode UndefVarError: `s` not defined in `Main` Since s is local to the function sum_to, calling the function has no effect on the global variable s. We can also see that the update s = s + i in the for loop must have updated preserving the "programming at scale" benefits of the 1.0 behavior: global variables have no spooky effect on the meaning of code that may be far away; in the REPL copy-and- paste debugging works and beginners

from the perlre manpage: i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale for code points less than 255, and from Unicode UndefVarError: `s` not defined in `Main` Since s is local to the function sum_to, calling the function has no effect on the global variable s. We can also see that the update s = s + i in the for loop must have updated preserving the "programming at scale" benefits of the 1.0 behavior: global variables have no spooky effect on the meaning of code that may be far away; in the REPL copy-and- paste debugging works and beginners