
Usage of struts2's tag
Struts2's s:iterator can traverse any array, collection, etc. in the data stack. Here are some simple demos:
Dec 13, 2016 pm 05:41 PM
Detailed explanation of the use of s:iterator tag in struts2
Simple demo: The s:iterator tag has 3 attributes: value: the collection to be iterated id: the id of the element in the specified collection status the index of the iterated element
Dec 13, 2016 pm 05:38 PM
Use of Iterator in c++ STL standard container
Most standard containers of C++ STL provide Iterator. Some containers, such as priority_queue, do not have Iterator because semantically they should not allow arbitrary traversal of elements in the container.
Dec 13, 2016 pm 05:33 PM
Usage of s:iterator
Struts2's s:iterator can traverse any array, collection, etc. in the data stack. Here are some simple demos:
Dec 13, 2016 pm 05:31 PM
Add events to the buttons above each Item in the ListView
This is just for testing. I have written all the data to death. You can modify it yourself as needed. In addition, there are two ways to implement the Button event on each Item on the ListView:
Dec 13, 2016 pm 04:55 PM
Detailed explanation of shutdown command under Linux
The shutdown command can safely shut down or restart a Linux system. It prompts a warning message to all logged-in users on the system before shutting down the system. This command also allows the user to specify a time parameter, which can be a precise time or a period of time from now.
Dec 13, 2016 pm 03:49 PM
Linux network programming--the difference between shut_down and close() functions
In Linux C network programming, there are two methods to close a connected network communication. They are the close function and the shutdown function. Their function prototypes are:
Dec 13, 2016 pm 03:46 PM
Linux command: shutdown
This command can safely shut down or restart the system. You read that right, the shutdown command can not only shut down the system, but also restart the Linux system.
Dec 13, 2016 pm 03:43 PM
Introduction to grep command under CentOS
grep is a command line tool originally used in Unix operating systems. Given a file list or standard input, grep will search for text that matches one or more regular expressions and output only matching (or unmatched) lines or text. grep can query matching lines in the file based on the provided matching pattern list. After a matching line is found, the line content will be output to standard output (default). If other parameters are used, output in other formats can be generated. grep is used to match text. It There is no limit on the length of the input line, except by available memory, and any character within the line can be matched.
Dec 13, 2016 pm 03:38 PM
Detailed explanation of grep
OK, after learning regular expressions, sed, awk, and the three text musketeers, the only thing left is grep. Let’s take it together. Let’s first look at what grep is.
Dec 13, 2016 pm 03:08 PM
Detailed explanation of Grep command-9 classic usage scenarios
Grep's full name is Global Regular Expression Print, which means global regular expression. It is a powerful text search tool that uses regular matching.
Dec 13, 2016 pm 02:54 PM
Powerful grep command
There are a lot of explanations about the grep command on the Internet, and they are basically a rough translation of the man command. To be honest, I will forget it after reading it! Personally, I think the best way to learn commands is to simulate the real environment, write down some command combinations that may be used, and then slowly digest them. At least that's how I came here. At the beginning, it was basically rote memorization, and then I slowly expanded my horizons. As time went by, I accumulated more. Okay, let’s get to the point and talk about the awesome grep command.
Dec 13, 2016 pm 02:46 PM
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