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Why don't self-closing script elements work?
...PUT), implicitly closeable (e.g. P, LI, TD), or explicitly closeable (e.g. TABLE, DIV, SCRIPT). XML, of course, has no concept of this.
The tag-soup parsers used by modern browsers evolved out of this legacy, although their parsing model isn't pure SGML anymore. And of course, your carefully-crafte...
Entity Framework 4 - AddObject vs Attach
...pdate (or delete) the appropriate row by finding its matching ID in the db table.
Furthermore, using the Attach method, you can define relationships between entities that already exist in the ObjectContext but that have not been connected automatically. Basically the main purpose of Attach, is to ...
What is the difference between Sublime text and Github's Atom [closed]
...o run on top of Node.js, and it's a more mature product, about to reach a stable version 3.
There are a long list of minor differences that can be included in the comments (I wish this markdown could be able to draw a table for comparisons, but that's another issue).
Because of Atom's rapid turnout...
Why does Dijkstra's algorithm use decrease-key?
...the runtime? That depends on what priority queue you use. Here's a quick table that shows off different priority queues and the overall runtimes of the different Dijkstra's algorithm implementations:
Queue | T_e | T_d | T_k | w/o Dec-Key | w/Dec-Key
---------------+--------+--...
Why JSF saves the state of UI components on server?
...t of codes and projects which unnecessarily duplicates the entire database table into Java's memory in flavor of a session scoped bean where Java is been used instead of SQL to filter/group/arrange the records. With ~1000 records, that would easily go over 10MB per user session.
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What's an object file in C?
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A linker takes all these object files and combines them to form one executable (assuming that it can, ie: that there aren't any duplicate or undefined symbols). A lot of compilers will do this for you (read: they run the linker on their own) if you don't tell them to "just compile" using command-...
How do I parse command line arguments in Bash?
...hosts', Leftovers: foo bar
The advantages of getopts are:
It's more portable, and will work in other shells like dash.
It can handle multiple single options like -vf filename in the typical Unix way, automatically.
The disadvantage of getopts is that it can only handle short options (-h, not...
How to have no pagebreak after \include in LaTeX
...ent. The others will not show up, but are considered for counters, labels, tables of contents when the corresponding aux files are included.
In other words, by using include and includeonly one can keep the compile time short in a draft while having correct references.
Further reading on Wikibooks....
TCP 的那些事儿(上) - 更多技术 - 清泛网 - 专注C/C++及内核技术
...给destory掉,然后在日志里打一个警告(如:time wait bucket table overflow),官网文档说这个参数是用来对抗DDoS攻击的。也说的默认值180000并不小。这个还是需要根据实际情况考虑。
Again,使用tcp_tw_reuse和tcp_tw_recycle来解决TIME_W...
How to update SQLAlchemy row entry?
Assume table has three columns: username , password and no_of_logins .
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