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....
RUBY_MAX_CPU=n environment variable sets maximum number of N (maximum number of native threads). The default value is 8. Since only one Ruby thread per Ractor can run at the same time, the number of native threads will be used, which is the smaller of the number specified in RUBY_MAX...
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);]])], ...
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 ...
AS_IF([test "$HAVE_BASERUBY" != no -a "`RUBYOPT=- $BASERUBY --disable=gems -e 'print 42 if RUBY_VERSION > "2.2"' 2>/dev/null`" = 42], [ BASERUBY="$BASERUBY --disable=gems" BASERUBY_VERSION=`$BASERUBY -v`
Ruby/GTK2 - Ruby/GTK2 is a Ruby binding of GTK+-2.x. irb Alternatives Pry - An IRB alternative and runtime developer console irb Tools table_print - TablePrint turns objects into nicely formatted columns for easy reading. Works great in rails console, works on pure ruby objects, auto...
, :remove_instance_variable, :kind_of?, :instance_variables, :tap, :method, :public_method, :singleton_method, :awesome_print, :is_a?, :extend, :define_singleton_method, :awesome_inspect, :to_enum, :enum_for, :ai, :<=>, :===, :=~, :!~, :eql?, :respond_to?, :freeze, ...