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What is the difference between 'E', 'T', and '?' for Java generics?
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Well there's no difference between the first two - they're just using different names for the type parameter (E or T).
The third isn't a valid declaration - ? is used as a wildcard which is used when providing a type argument, e.g. List<?> foo = ... means that foo refers to a l...
Suppress warning messages using mysql from within Terminal, but password written in bash script
When I tried running the following command on MySQL from within Terminal:
25 Answers
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Git push branch from one remote to another?
I have the following remotes set up:
6 Answers
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MySQL: Transactions vs Locking Tables
I'm a bit confused with transactions vs locking tables to ensure database integrity and make sure a SELECT and UPDATE remain in sync and no other connection interferes with it. I need to:
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pdf2htmlEX实现pdf转html - 开源 & Github - 清泛网 - 专注C/C++及内核技术
pdf2htmlEX实现pdf转html首先要感谢pdf2htmlEX的作者Lu Wang，该软件是一个pdf转html的开源软件，效果非常理想。下面两张图片是html和pdf视图下的截图：windows下...首先要感谢pdf2htmlEX的作者Lu Wang，该软件是一个pdf转html的开源软件，效果...
How do I enable/disable log levels in Android?
I am having lots of logging statements to debug for example.
17 Answers
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Ruby: How to post a file via HTTP as multipart/form-data?
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I like RestClient. It encapsulates net/http with cool features like multipart form data:
require 'rest_client'
RestClient.post('http://localhost:3000/foo',
:name_of_file_param => File.new('/path/to/file'))
It also supports streaming.
gem insta...
常用Git命令汇总 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
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--global #用户全局
--local #单独一个项目
git config --global user.name "xxxx" #用户名
git config --global user.email "xxxx@xxx.com" #邮箱
git config --global core.editor vim #编辑器
git config --global alias.st status #按这种方法，配置别名
git config -l #列举...
How do I syntax check a Bash script without running it?
Is it possible to check a bash script syntax without executing it?
8 Answers
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PHP & mySQL: Year 2038 Bug: What is it? How to solve it?
I was thinking of using TIMESTAMP to store the date+time, but I read that there is a limitation of year 2038 on it. Instead of asking my question in bulk, I preferred to break it up into small parts so that it is easy for novice users to understand as well. So my question(s):
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