默认的字段还有created_at 和updated_at。 合法的字段类型有以下这些: binary, boolean, date, datetime, decimal, float, integer, string, time, 以及 timestamp。 可用的选项有:limit, default, and null. 比方说 :null => false 用来指定该字段不能为
url (String): url of a processed webpage data (Hash): uses to pass data between requests Example how to use data Imagine that there is a product page which doesn't contain product category. Category name present only on category page with pagination. This is the case where we can use...
File.new(path, modestring="r") => file File.new(path, modenum [, permnum]) => file File.open(fileName, aModeString="r") {|file| block} -> nil File.open(fileName [, aModeNum [, aPermNum ]]) {|file| block} -> nil IO.foreach(path, sepstring=$/) {|line| block} IO....
一个负数的索相对于数组的末尾计数的,也就是说,索引为 -1 表示数组的最后一个元素,-2 表示数组中的倒数第二个元素,依此类推。 Ruby 数组可存储诸如 String、 Integer、 Fixnum、 Hash、 Symbol 等对象,甚至可以是其他 Array 对象。 Ruby 数组不需要指定大小,当向数组添加元素时,Ruby 数组会自动增长。 names ...
Today’s WASI and WebAssembly itself is missing some features to implement Fiber, exception, and GC because it’s still evolving, and also for security reasons. So CRuby fills the gap by using Asyncify, which is a binary transformation technique to control execution in userland. ...
Opal::Buildercan be used to build the runtime/corelib into a string. Opal::Builder.build('opal')#=> "(function() { ... })()" or to build an entire app including dependencies declared withrequire: builder=Opal::Builder.newbuilder.build_str('require "opal"; puts "wow"','(inline)'...
Patch1: ruby-2.1.0-Prevent-duplicated-paths-when-empty-version-string-i.patch # Allows to override libruby.so placement. Hopefully we will be able to return # to plain --with-rubyarchprefix. # http://bugs.ruby-lang.org/issues/8973 Patch2: ruby-2.1.0-Enable-configuration-of-arch...
Addfrozen_string_literal: truemagic comment (#1631) 12个月前 doc Doc: Fix link to discussion page (#1666) 5个月前 examples Rubocop: Fix Style/RedundantParentheses (#1691) 8天前 ext/RMagick Fix SEGV if read incorrect PDF file (#1671) ...
StringScanner 1.0.3 Some other libraries that have no original version are also updated. The following libraries are no longer bundled gems. Install corresponding gems to use these features. CMath (cmath gem) Scanf (scanf gem) Shell (shell gem) ...
template.setKeySerializer(new StringRedisSerializer()); //ValueSerializer使用的是JdkSerializationRedisSerializer,并且默认情况下就是JdkSerializationRedisSerializer,我也不知道前人是什么个意思,再重新设置同样的序列化 template.setValueSerializer(new JdkSerializationRedisSerializer() { ...