puts "Global variable in Class1 is #$global_variable" end end class Class2 def print_global puts "Global variable in Class2 is #$global_variable" end end class1obj = Class1.new class1obj.print_global class2obj = Class2.new class2obj.print_global 在这里,$global_variable 是全局变量。这...
There are some other branches under development. Try the following command to see the list of branches:$ git ls-remote https://github.com/ruby/ruby.git You may also want to use https://git.ruby-lang.org/ruby.git (actual master of Ruby source) if you are a committer....
TypeProf is a type analysis tool bundled in the Ruby package. Currently, TypeProf serves as a kind of type inference. It reads plain (non-type-annotated) Ruby code, analyzes what methods are defined and how they are used, and generates a prototype of type signature in RBS format. Here i...
TypeProf is a type analysis tool bundled in the Ruby package. Currently, TypeProf serves as a kind of type inference. It reads plain (non-type-annotated) Ruby code, analyzes what methods are defined and how they are used, and generates a prototype of type signature in RBS format. Here i...
When assigning the result of a conditional expression to a variable, preserve the usual alignment of its branches. # bad - pretty convoluted kind = case year when 1850..1889 then 'Blues' when 1890..1909 then 'Ragtime' when 1910..1929 then 'New Orleans Jazz' when 1930..1939 then 'Swing...
AC_CACHE_CHECK(for variable length macro, rb_cv_va_args_macro, [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ int foo(const char*); @%:@define FOO(...) foo(@%:@__VA_ARGS__) ]], [[FOO(1);FOO(1,2);FOO(1,2,3);]])], ...
[RUBY_ALIAS_FUNCTION_TYPE(void, prot, name, args)]) ]) AC_CACHE_CHECK([for __atomic builtins], [rb_cv_gcc_atomic_builtins], [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[unsigned int atomic_var;]], [[ __atomic_exchange_n(&atomic_var, 0, __ATOMIC_SEQ_CST); ...
To check if the variable is set, try printenv | grep SELENIUM:1 $ printenv | grep SELENIUM 2 SELENIUM_SERVER_JAR=/home/zeljko/bin/ 3 selenium-server-standalone-2.39.0.jar Looks good to me!Quick StartYou will need internet access if you want to follow examples in this chapter. If ...
在Python 3.6中，你声明一个这样的变量类型：variable_name: type如果您在创建变量时分配初始值，那么...
> shadowing outer local variable - a a # => 1 New syntax for lambdas[VERY EXPERIMENTAL] a = ->(b,c){ b + c } a.call(1,2) # => 3 Note that thisdoes notreplace the traditional block syntax. Matz has already said the latter is here to stay,forever. The new syntax allows to...