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What is the meaning of $$ in Ruby?
irb(main):002:0> $$ => 5052 What is th开发者_高级运维e meaning of $$ in Ruby and How/Where to use it?$$ is the process ID. It\'s named that way to follow Perl, which in turn followed the Bourn[详细]
2022-12-18 12:32 分类：问答define a long complex literal string
I have a string that is quite long and complicated, with special characters inside. I want to define this string as a variable开发者_如何转开发, but don\'t want to escape each of them (because there a[详细]
2022-12-18 11:55 分类：问答How to end line with QTextEdit
I\'m trying开发者_JAVA百科 to create QTextEdit with some text, and in this text I have end of line characters (\\n), but it is not accepted in QTextEdit object (whole text is displayed without any bre[详细]
2022-12-18 11:18 分类：问答using the contents of <a> tag to set the li class with jquery
I have a simple drop-down menu: <ul id=\"nav\" > <li><a href=\'/\'>Parent One</a>[详细]
2022-12-18 10:28 分类：问答fork() and printf()
As I understood fork() creates a child process by copying the image of the parent process. My question is about how do child and parent processes share the stdout stream?[详细]
2022-12-18 04:47 分类：问答游戏BP是什么意思？
雨雪注册 2022-06-04 22:38 简要回答我们在玩游戏的时候经常会听见BP这个词语，BP是英文ban和pick的简称。ban的意思是禁用，pick的意思是挑选英雄，是常用的游戏术语，意思就是玩游戏的时候，先禁止使用一些英雄[详细]
2022-12-18 01:51 分类：问答船老大带徒弟下一句是什么啊？？
沈赛莉 开发者_开发百科2022-06-05 13:56 是吧，船老大是河里面摆渡的，带徒弟，肯定要从河说起摩登小乖洋[详细]
2022-12-18 01:32 分类：问答南京95多少钱一包啊？南京九五至尊 香烟 多少钱一包啊？ 有几种？？
ty_134915257 2022-06-07 01:47 南京九五之尊是江苏南京产的香烟品牌，香烟价位高，焦油量12mg，市场价格为1000元/条，而且只有一种。[详细]
2022-12-17 23:39 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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