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Regexp Java for password validation
...[@#$%^&+=])(?=\S+$).{8,}$
Explanation:
^ # start-of-string
(?=.*[0-9]) # a digit must occur at least once
(?=.*[a-z]) # a lower case letter must occur at least once
(?=.*[A-Z]) # an upper case letter must occur at least once
(?=.*[@#$%^&+=]) # a special ...
Is gcc's __attribute__((packed)) / #pragma pack unsafe?
...7
p1 = ffbff31c
Bus error
In both cases, the program is compiled with no extra options, just gcc packed.c -o packed.
(A program that uses a single struct rather than array doesn't reliably exhibit the problem, since the compiler can allocate the struct on an odd address so the x member is properl...
What's the difference between streams and datagrams in network programming?
...ets
stream (TCP, order and delivery guaranteed,no duplication,no length or char boundaries for data,connection-oriented,reliable, concurrency)
datagram(UDP,packet-based, connectionless, datagram size limit, data can be lost or duplicated, order not guaranteed,not reliable)
raw (direct access to lowe...
Lost connection to MySQL server at 'reading initial communication packet', system error: 0
...ggests that it might be because the MySQL server is bound to the loop-back IP (127.0.0.1 / localhost) which effectively cuts you off from connecting from "outside".
If this is the case, you need to upload the script to the webserver (which is probably also running the MySQL server) and keep your se...
How can I limit possible inputs in a HTML5 “number” element?
...-numeric characters to be entered, because object.length would be an empty string for the number inputs, and therefore its length would be 0. Thus the maxLengthCheck function won't work.
Solution:
See this or this for examples.
Demo - See the full version of the code here:
http://jsfiddle.net/DRSD...
What is the memory consumption of an object in Java?
...uld I use a 32- or a 64-bit JVM?, 2012, JDK 1.7)
Boxed types, arrays, and strings
Boxed wrappers have overhead compared to primitive types (from JavaWorld):
Integer: The 16-byte result is a little worse than I expected because an int value can fit into just 4 extra bytes. Using an Integer c...
TaifunWiFi 拓展：WiFi Manager WiFi管理器扩展 · App Inventor 2 中文网
...i状态控制（启用/禁用WiFi）
网络信息查询（SSID、BSSID、IP地址等）
可用网络扫描
网络连接管理
信号强度检测
5GHz频段支持检测
DNS服务器查询
位置权限管理
网络建议API支持
扩展截图
...
How Can I Download a File from EC2 [closed]
...
Use scp:
scp -i ec2key.pem username@ec2ip:/path/to/file .
where:
ec2key.pem is your PEM key
username is the username you log in with
ec2ip is the IP or DNS alias of the instance
/path/to/file is the location where the file is stored
This will copy the file i...
SQL injection that gets around mysql_real_escape_string()
Is there an SQL injection possibility even when using mysql_real_escape_string() function?
4 Answers
...
How to split comma separated string using JavaScript? [duplicate]
I want to split a comma separated string with JavaScript. How?
4 Answers
4
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