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【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...在的话，获取setsockopt配置
if (!ipc.oif)
ipc.oif = inet->mc_index;
if (!saddr)
saddr = inet->mc_addr;
connected = 0;
} else if (!ipc.oif)
ipc.oif = inet->uc_index;
if (connected) //connect()的时候已经查找过路由
rt = (struct rtable *)sk_dst_check(sk, 0);
...
CSS z-index paradox flower
I would like to create a paradoxical effect via the z-index CSS property.
6 Answers
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WAMP error: Forbidden You don't have permission to access /phpmyadmin/ on this server
...al machine.
<Directory "c:/wamp/apps/phpmyadmin3.4.5/">
Options Indexes FollowSymLinks MultiViews
AllowOverride all
Order Deny,Allow
Allow from all
</Directory>
Here my WAMP installation is in the c:\wamp folder. Change it according to your installation.
Previ...
Difference between UTF-8 and UTF-16?
...in UTF-8 cons:
Many common characters have different length, which slows indexing by codepoint and calculating a codepoint count terribly.
Even though byte order doesn't matter, sometimes UTF-8 still has BOM (byte order mark) which serves to notify that the text is encoded in UTF-8, and also break...
Blocks and yields in Ruby
... Let's simplify that a bit: File.readlines("readfile.rb").each_with_index do |line, index| puts "#{index + 1}: #{line}" end and laugh even harder at the Java guys.
– Michael Hampton
Dec 29 '14 at 4:17
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Convert character to ASCII code in JavaScript
...that unlike String.fromCharCode( asciiNumVal ), stringInstance.charCodeAt( index ) is not a static method of class String
– bobobobo
Sep 12 '12 at 19:09
...
Why use multiple columns as primary keys (composite primary key)
..." link is particularly stupid, the info is self-serving and false. 2) The index on the columns that make the row unique cannot be avoided. A "surrogate" ID with an index is always an additional column and an additional index. Rather silly because it is redundant. And slower.
–...
How to create a tag with Javascript?
... return sheet;
}
function addRule(selectorText, cssText, index) {
if(typeof index === 'undefined')
index = this.cssRules.length;
this.insertRule(selectorText + ' {' + cssText + '}', index);
}
return createStyleSheet;
})(...
Set the value of an input field
... answered Sep 2 '15 at 5:59
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Samples of Scala and Java code where Scala code looks simpler/has fewer lines?
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Task: Write a program to index a list of keywords (like books).
Explanation:
Input: List<String>
Output: Map<Character, List<String>>
The key of map is 'A' to 'Z'
Each list in the map are sorted.
Java:
import java.util.*;
cla...