Ruby 2.4 unifies Fixnum and Bignum into Integer
Ruby uses Fixnum class for representing small numbers and Bignum class for big numbers. 1# Before Ruby 2.4 2 31.class #=> Fixnum 4(2 ** 62).class #=> BignumCopy In general routine work we don't have to worry about whether the number we are dealing with is Bignum or Fixnum. It's just an implementation detail. Interestingly, Ruby also has Integer class which is superclass for Fixnum and Bignum. Star
Deoptimization Engine by shyouhei · Pull Request #1419 · ruby/ruby
Abstract Implemented a way to optimize ruby's executions and to revert them. The strategy is restricted so that any VM states like program counter(s) would not be affected by the modifications. This restriction makes deoptimize much lightweight. Experiments show optimizations on this mechanism speeds up micro benchmarks, yet has no significant overheads for pitfall-ish activities, like eval. Intro
Behavior changes in Ruby 2.4
The first preview version of Ruby 2.4 was released a few days ago. This particular release includes a bunch of new features. Moreover, it introduces some fixes and changes that are not entirely backward compatible. Thus, we need to pay close attention to these differences in this new version of Ruby. In this post, we’ll focus on some remarkable changes in behavior, so as to better understand how o
Ruby 2.4.0-preview1 Released
Posted by naruse on 20 Jun 2016 We are pleased to announce the release of Ruby 2.4.0-preview1. Ruby 2.4.0-preview1 is the first preview of Ruby 2.4.0. This preview1 is released earlier than usual because it includes so many new features and improvements. Feel free to send feedback since you can still change the features. Unify Fixnum and Bignum into Integer Though ISO/IEC 30170:2012 doesn’t specif
[Feature #12005] Unify Fixnum and Bignum into Integer · ruby/ruby@f9727c1
* [Feature #12005] Unify Fixnum and Bignum into Integer * include/ruby/ruby.h (rb_class_of): Return rb_cInteger for fixnums. * insns.def (INTEGER_REDEFINED_OP_FLAG): Unified from FIXNUM_REDEFINED_OP_FLAG and BIGNUM_REDEFINED_OP_FLAG. * vm_core.h: Ditto. * vm_insnhelper.c (opt_eq_func): Use INTEGER_REDEFINED_OP_FLAG instead of FIXNUM_REDEFINED_OP_FLAG. * vm.c (vm_redefinition_check_flag): Use rb_cI
![[Feature #12005] Unify Fixnum and Bignum into Integer · ruby/ruby@f9727c1](https://cdn-ak-scissors.b.st-hatena.com/image/square/39934bce5cd223124565eb32fc5545203887484a/height=288;version=1;width=512/https%3A%2F%2Fopengraph.githubassets.com%2F1886fcc73a919ee58aff9bcefa0f20b96985bfb7bfaefcf196726342836f6f87%2Fruby%2Fruby%2Fcommit%2Ff9727c12cc8fbc5f752f5983be1f14bb976e5a13)
Feature #12116: `Fixnum#divmod`, `Bignum#divmod` with multiple arguments - Ruby master - Ruby Issue Tracking System
Sometimes, I need to apply divmod repeatedly. For example, in order to convert a number expressing seconds into approx year, day, hour, minutes, seconds (approx in the sense of ignoring leap day and leap second), I can repeatedly apply divmod: seconds = 289342751 minutes, seconds = seconds.divmod(60) # => [4822379, 11] hours, minutes = minutes.divmod(60) # => [80372, 59] days, hours = hours.divmod
Ruby Best Practices - The Complete Numeric Class
As announced in the previous article we will look at a complete number class today. I will use the example of a integer number which, when printed, will show up as hex number (as opposed to the decimal presentation of Fixnum and relatives). As before the main point is not sophisticated logic or usefulness of the class. Instead I will keep the logic simple so we can focus on the aspects I try to co
How Big is a Bignum? - Pat Shaughnessy
Ruby represents small integers using Fixnum and large integers using Bignum. Most of us don’t use Ruby to perform complex calculations for science, engineering or cryptography applications; instead, we might turn to R, Matlab or some other programming language or tool for that sort of thing. When we calculate values using Ruby, it’s often to process simple values while generating a web page using
class Fixnum (Ruby 3.2 リファレンスマニュアル)
要約 Alias of Integer 目次 継承しているメソッド Numericから継承しているメソッド % +@ -@ <=> abs abs2 angle arg ceil coerce conj conjugate denominator div divmod eql? fdiv finite? floor i imag imaginary infinite? integer? magnitude modulo negative? nonzero? numerator phase polar positive? quo real real? rect rectangular remainder round step to_c to_int truncate zero? Comparableから継承しているメソッド < <= == > >= between? clamp
Class: Fixnum (Ruby 2.1.2)
Holds Integer values that can be represented in a native machine word (minus 1 bit). If any operation on a Fixnum exceeds this range, the value is automatically converted to a Bignum. Fixnum objects have immediate value. This means that when they are assigned or passed as parameters, the actual object is passed, rather than a reference to that object. Assignment does not alias Fixnum objects. Ther
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Feature #12005: Unify Fixnum and Bignum into Integer - Ruby master - Ruby Issue Tracking System
[regression] AR 4.2+ RangeError when querying with a very big (or small) Fixnum by amatsuda · Pull Request #19717 · rails/rails · GitHub
http://www.minituku.net/drills/924190130/questions/835375339/result?choice=1017108142&locale=ja