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Check status of one port on remote host [closed]
...or Windows, Linux, and Mac OS X.
For example, check for telnet on a known ip:
nmap -A 192.168.0.5/32 -p 23
For example, look for open ports from 20 to 30 on host.example.com:
nc -z host.example.com 20-30
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【精心整理】【实用】visual C++中最常用的类与API函数 - C/C++ - 清泛网 -...
...旋转控件Spin的控制类
CStatusBar类：状态栏窗口的基类
CString类：处理字符串
CStringList类：支持CString对象的列表
CWinApp类：派生的程序对象的基类
CWnd类：提供所有窗口类的基本函数
API函数
CArchive类：用于二进...
Fastest way to iterate over all the chars in a String
In Java, what would the fastest way to iterate over all the chars in a String, this:
8 Answers
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Python's “in” set operator
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This is not a very good test since string constants are often interned (try a = 'a'; b = 'a'; a is b). I tried it with a = (1, 2, 3); b = (1, 2, 3); a == b; hash(a) == hash(b); a is b; a in set([b]) instead.
– Philipp
Jan...
Select datatype of the field in postgres
...QL allows you to have the same table name (even an identical table) in multiple schemas. The robust way to write that WHERE clause considers that possibility: where table_catalog = ? and table_schema = ? and table_name = ?; But this information_schema view doesn't consider that the DDL might have us...
What is the theoretical maximum number of open TCP connections that a modern Linux box can have
...ed, but that is per client per server port, and needs clarifying.
Each TCP/IP packet has basically four fields for addressing. These are:
source_ip source_port destination_ip destination_port
< client > < server >
Inside the TCP stack, these four fields a...
How can I convert comma separated string into a List
This doesn't work cause the split method returns a string[]
11 Answers
11
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How do I trim leading/trailing whitespace in a standard way?
...ferably standard method of trimming leading and trailing whitespace from a string in C? I'd roll my own, but I would think this is a common problem with an equally common solution.
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Can I pass an array as arguments to a method with variable arguments in Java?
...tibility.
So you should just be able to prepend extraVar to args and call String.format(format, args).
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What is the difference between an Azure Web Site and an Azure Web Role
... servers other users' sites. You can scale your site up and down (at some extra charge) to make it more elastic as your resource needs shift.
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