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译文:理解Java中的弱引用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...。既然它们是一些不知名的概念,我简单就着前面的三个问题来说明一下。
强引用(Strong Reference)
强引用就是我们经常使用的引用,其写法如下
StringBuffer buffer = new StringBuffer();
上面创建了一个StringBuffer对象,并将这个对象的...
windows版 svn 服务器搭建及总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...e –d –r d:/svnserversoftware/myrepository
以下转载若干问题
1、不知道该怎么设置 svn://url 这个路径
2、三个需要设置的文件,其中authz这个里面的[repos:/]这个到底该怎么设置
3、认证失败问题出在哪里?
4、svn import 目录1 "s...
Include constant in string without concatenating
Is there a way in PHP to include a constant in a string without concatenating?
12 Answers
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How do I insert NULL values using PDO?
...akes a variable, to reference, and doesn't pull in a value at the time of calling bindParam. I found this in a comment on the php docs:
bindValue(':param', null, PDO::PARAM_INT);
EDIT: P.S. You may be tempted to do this bindValue(':param', null, PDO::PARAM_NULL); but it did not work for everybody...
一个故事告诉你比特币的原理及运作机制 - 创意 - 清泛网 - 专注C/C++及内核技术
...事的方式,逐步告诉大家比特币提出的动机、解决了什么问题以及一些关键组件的目标和设计方案。
问题的提出
我们先从比特币产生的动机开始。
以物易物的比特村
话说在这个世界上,有一个叫比特村的小村庄,村庄共有...
一个转型程序员的销售观 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...,我们擅长技术,却完全不懂营销跟销售。当意识到这个问题的严重性后,我开始承担起业务销售这个角色。
程序员转销售?能做得好吗?做了三年多的app程序开发,自已觉得在技术领域还是做得比较出色的,两年的安卓加一...
How to make MySQL handle UTF-8 properly
... My understanding is that utf8 within MySQL only refers to a small subset of full Unicode. You should use utf8mb4 instead to force full support. See mathiasbynens.be/notes/mysql-utf8mb4 "For a long time, I was using MySQL’s utf8 charset for databases, tables, and columns, assuming i...
Path of assets in CSS files in Symfony 2
...ge in /web/bundles/mynicebundle/images/devil.png
I have made a test with ALL possible (sane) combinations of the following:
@notation, relative notation
Parse with cssrewrite, without it
CSS image background vs direct <img> tag src= to the very same image than CSS
CSS parsed with assetic a...
How to display HTML tags as plain text [duplicate]
I have an input form on my website where HTML is allowed and I'm trying to add instructions about the use of HTML tags. I'd like the text to
...
On delete cascade with doctrine2
...ple in order to learn how to delete a row from a parent table and automatically delete the matching rows in the child table using Doctrine2.
...
