在Ruby中Symbol表示“名字”,比如字符串的名字、标识符的名字,创建一个Symbol对象的方法是在名字或者字符串之前加上":"。Ruby中每一个对象都有唯一的对象标识符(Object Identifier),可以用object_id方法(Getter)获得。 Ruby中的Block 代码块 Code Block 是Ruby的一个很强大的功能,同时又不是很容易理解其设计原理的...
(For preview users: this optimization may consume memory proportional to the input length for each match. We expect no practical problems to arise because this memory allocation is usually delayed, and a normal Regexp match should consume at most 10 times as much memory as the input length. I...
enumerator.c Remove write barrier for non-Ruby object Sep 24, 2024 error.c Fix style [ci skip] Apr 19, 2025 eval.c Lock-free hash set for fstrings [Feature #21268] Apr 18, 2025 eval_error.c Do not include a backtick in error messages and backtraces Feb 15, 2024 eval_intern.h ...
HashBack is easy to use, so we can jump right in to code using the system. First, install the gem: sudogeminstalljsl-hashback Then, in your code you’ll want to require ‘hashback’. For this example, the object ids that we use will be UUIDs created by the assaf-uuid gem, so ...
... def self.define_ui_object(element) case $caps[:caps][:platformName].downcase when "android" idempotently_define_singleton_method(element["OBJNAME"]){$driver.find_element(:"#{element["ATTRIBUTE"]}","#{element["ANDROID_IDENTITY"]}")} else idempotently_define_singleton_method(element...
In most cases, you can avoid the incompatibility by adding the double splat operator. It explicitly specifies passing keyword arguments instead of a Hash object. Likewise, you may add braces {} to explicitly pass a Hash object, instead of keyword arguments. Read the section “Typical cases” ...
belongs_to :region end class Region < ActiveRecord::Base has_many :countries end # Enjoy the automatic Object-Relation Mapping cty = Country.find('CN') puts 'CN refers to [' + cty.name + ']' puts '[' + cty.name + '] is in [' + cty.region.name + ']' ...
The string your are sending to javascript is getting evaluated, just like ruby has an eval method. So, a json string being sent to javascript will evaluate to an object.like this in ruby:hash = {"a" => 5} dynamic_code = "UI.messagebox(#{hash}.keys.first)" eval dynamic_code this ...
linking shared-object sequel_pg.so sequel_pg.o: In function `spg_set_single_row_mode': C:\Ruby22-x64\lib\ruby\gems\2.2.0\gems\sequel_pg-1.6.17\ext\sequel_pg/sequel_pg.c:898: undefined reference to `pg_get_pgconn' sequel_pg.o: In function `spg__flush_results': ...
which means there is a N+1 query from the Post object to its Comment association. In the meantime, there's a log appended intolog/bullet.logfile 2010-03-07 14:12:18[INFO] N+1 Query in /posts Post => [:comments] Add to your finder: :include => [:comments] 2010-03-07 14:12:...