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淘宝网采用什么技术架构来实现网站高负载的 - 更多技术 - 清泛网 - 专注C/C...
... 息的话，那么当保存状态信息的server宕机的时候，我们怎么办?通常来说，我们都是通过集群来解决这个问题，而通常所说的集群，不仅有负载均衡，更重要的是要有失效恢复failover,比如tomcat采 用的集群节点广播复制，jboss采 用...
Good MapReduce examples [closed]
I couldn't think of any good examples other than the "how to count words in a long text with MapReduce" task. I found this wasn't the best example to give others an impression of how powerful this tool can be.
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Looping through the content of a file in Bash
... in text files without the extra step of using separate script files.
for word in $(cat peptides.txt); do echo $word; done
This format allows me to put it all in one command-line. Change the "echo $word" portion to whatever you want and you can issue multiple commands separated by semicolons. The...
Java: method to get position of a match in a String?
...cified index].
String text = "0123hello9012hello8901hello7890";
String word = "hello";
System.out.println(text.indexOf(word)); // prints "4"
System.out.println(text.lastIndexOf(word)); // prints "22"
// find all occurrences forward
for (int i = -1; (i = text.indexOf(word, i + 1)) != -1; i++) {...
What is Full Text Search vs LIKE
...anking algorithm to quantify how strongly a given record matches search keywords.
The SQL LIKE operator can be extremely inefficient. If you apply it to an un-indexed column, a full scan will be used to find matches (just like any query on an un-indexed field). If the column is indexed, matching ca...
SQL: capitalize first letter only [duplicate]
I need an SQL statement to capitalize the first letter of each word. The other characters have to be lower case.
4 Answers
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How to search for occurrences of more than one space between words in a line
How to search for occurrences of more than one space between words in a line
5 Answers
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What does `dword ptr` mean?
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The dword ptr part is called a size directive. This page explains them, but it wasn't possible to direct-link to the correct section.
Basically, it means "the size of the target operand is 32 bits", so this will bitwise-AND the 3...
How can I make text appear on next line instead of overflowing? [duplicate]
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word-wrap: break-word
But it's CSS3 - http://www.css3.com/css-word-wrap/.
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【解决】munmap_chunk(): invalid pointer - C/C++ - 清泛网 - 专注C/C++及内核技术
...被覆盖掉了，然后delete free就会报这个错误。例如：char* word = (char*)malloc(10);word = "abc"; 应使用 strcpy(word, "abc");free(word) 原因：new/malloc出来的指针被覆盖掉了，然后delete/free就会报这个错误。
例如：
char* word = (char*)malloc(10);
w...