你注意过了么?
此处的运算结果是false。
这个是ruby上给的解释。哈哈,见识了。
Float objects have plenty of precision and can approximate 0.1 very well,
but the fact that this number cannot be represented exactly leads to problems.
Consider the following simple Ruby expression:
0.4 - 0.3 == 0.1 # Evaluates to false in most implementations
Because of rounding error, the difference between the approximations of 0.4 and 0.3 is
not quite the same as the approximation of 0.1. This problem is not specific to Ruby: C,
Java,JavaScript, and all languages that use IEEE-754 floating-point numbers suffer
from it as well.
分享到:
相关推荐
将 jpgc-graphs-basic-2.0.zip 解压缩后只有一个 lib 目录,该目录下有一个 ext 文件夹和一个 jmeter-plugins-cmn-jmeter-0.3.jar 包,ext 文件夹中有 jmeter-plugins-graphs-basic-2.0.jar 和 jmeter-plugins-...
jshortcut-0.4-oberzalek.jar
在centos下安装yum使用,这个资源的原下载地址为:http://rpm.pbone.net/index.php3/stat/4/idpl/40733943/dir/centos_7/com/python-iniparse-0.4-9.el7.noarch.rpm.html
version `LIBAIO_0.4' not found 那么我这里有一个解决的办法。一开始都是想在Linux下安装MySql,在Ubuntu下可以用软件中心来安装,可是我选择了从官网上安装,按照下载包里的INSTALL-BINARY说明书一步一步地操作,...
赠送原API文档:java-xmlbuilder-0.4-javadoc.jar; 赠送源代码:java-xmlbuilder-0.4-sources.jar; 赠送Maven依赖信息文件:java-xmlbuilder-0.4.pom; 包含翻译后的API文档:java-xmlbuilder-0.4-javadoc-API文档...
1.3-1.5-4.2-5.5-4.6-6.5c-0.4-1.1-0.7-0.4-1.6,0.4c-0.9,0.8-1-1-0.9-2.2 c0.1-1.2,1.9-3.5,2.9-4.4c1-0.9,0.9-1.6,0.5-2.4c-0.3-0.6-0.1-1.9,0-2.7c-0.1,0.1-0.1,0.2-0.2,0.3c-0.5,0.7-1.5,1.4-2.2,0.6 s-2-2.8-...
Pentaho Data Integration(原名 kettle)是业界使用最广泛的企业级开源可视化ETL数据清洗系统。它非常适合企业数据研究人员、数据库...这里为什么是kettle 9.2,因为kettle 9.3+需要jdk11所以给大家推荐的是9.2.0.4-R
javacv-0.4-cppjars.zip很难找的资源,在google code上很难下下来。
资源分类:Python库 所属语言:Python 资源全名:mingus-0.3.7.9.tar.gz 资源来源:官方 安装方法:https://lanzao.blog.csdn.net/article/details/101784059
pycurl-7.43.0.4-cp36-cp36m-win_amd64
资源来自pypi官网,解压后可用。 资源全名:Doraemon-0.4-py2.py3-none-any.whl
赠送原API文档:jfasttext-0.4-javadoc.jar; 赠送源代码:jfasttext-0.4-sources.jar; 赠送Maven依赖信息文件:jfasttext-0.4.pom; 包含翻译后的API文档:jfasttext-0.4-javadoc-API文档-中文(简体)版.zip; ...
赠送原API文档:jfasttext-0.4-javadoc.jar; 赠送源代码:jfasttext-0.4-sources.jar; 赠送Maven依赖信息文件:jfasttext-0.4.pom; 包含翻译后的API文档:jfasttext-0.4-javadoc-API文档-中文(简体)-英语-对照版....
赠送原API文档:java-xmlbuilder-0.4-javadoc.jar; 赠送源代码:java-xmlbuilder-0.4-sources.jar; 赠送Maven依赖信息文件:java-xmlbuilder-0.4.pom; 包含翻译后的API文档:java-xmlbuilder-0.4-javadoc-API文档...
dump-0.4-0.6.b42.el6.i686.rpm
CDH离线安装包
oracle_11.2.0.3升级11.2.0.4--单实例升级.pdf
libpthread-stubs_0.4-1.diff.gz
离线安装包,亲测可用
python库,解压后可用。 资源全名:monocle_menu-0.1.0.4-py3-none-any.whl