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What's the difference between eval, exec, and compile?
I've been looking at dynamic evaluation of Python code, and come across the eval() and compile() functions, and the exec statement.
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Refresh image with a new one at the same url
I am accessing a link on my site that will provide a new image each time it is accessed.
19 Answers
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Unicode equivalents for \w and \b in Java regular expressions?
Many modern regex implementations interpret the \w character class shorthand as "any letter, digit, or connecting punctuation" (usually: underscore). That way, a regex like \w+ matches words like hello , élève , GOÄ_432 or gefräßig .
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REDHAT 6.4 X64下ORACLE 11GR2静默安装 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
... address
修改后的文件，
DEVICE=eth0
HWADDR=00:0C:29:EC:D0:45
TYPE=Ethernet
UUID=fa934d66-d4f7-495b-bb04-c4fba00686a7
ONBOOT=yes #no 改成yes 启动自动激活
NM_CONTROLLED=yes
BOOTPROTO=static #原来的DHCP 改成static
IPADDR=192.168.8.106 #根据自己的...
The static keyword and its various uses in C++
The keyword static is one which has several meanings in C++ that I find very confusing and I can never bend my mind around how its actually supposed to work.
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Win32汇编--使用MASM - C/C++ - 清泛网 - 专注C/C++及内核技术
...存模式
模式
内存使用方式
tiny
用来建立.com文件，所有的代码、数据和堆栈都在同一个64KB段内
small
建立代码和数据分别用一个64KB段的.exe文件
medium
代码段可以有...
Logging best practices [closed]
...g in real applications. Here are some questions that might help to explain your answer.
10 Answers
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用户界面（UI）组件 · App Inventor 2 中文网
...话框、日期选择框 等组件触发的弹出框。
PrimaryColor： 主题颜色。app的主要颜色，即整个屏幕和所有控件的主要颜色，首选颜色。
SecondaryColor：提示性颜色。这颜色一般比PrimaryColor亮一些或暗一些，取决于白天模...
Reference: mod_rewrite, URL rewriting and “pretty links” explained
"Pretty links" is an often requested topic, but it is rarely fully explained. mod_rewrite is one way to make "pretty links", but it's complex and its syntax is very terse, hard to grok, and the documentation assumes a certain level of proficiency in HTTP. Can someone explain in simple terms how "p...
Why does modern Perl avoid UTF-8 by default?
I wonder why most modern solutions built using Perl don't enable UTF-8 by default.
7 Answers
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