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When would you use a List instead of a Dictionary?
...
From http://blogs.msdn.com/bclteam/archive/2004/09/03/225473.aspx:
KeyValuePair vs. DictionaryEntry
[Krzysztof Cwalina]
We discussed a problem with
implementation of IEnumerable on
Dictionary<K,V>. What type s...
Cast int to varchar
...se VARCHAR is not a valid type to cast into. According to the MySQL docs (http://dev.mysql.com/doc/refman/5.5/en/cast-functions.html#function_cast) you can only cast to:
BINARY[(N)]
CHAR[(N)]
DATE
DATETIME
DECIMAL[(M[,D])]
SIGNED
[INTEGER]
TIME
UNSIGNED [INTEGER]
I think your best-bet is to us...
Remove ALL white spaces from text
...' ',''));
will print:
abcdefg
But not working in every possible browser:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replaceAll
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ExpressJS - throw er Unhandled error event
...as using called for any of those ports, I'm certainly not using Node as an http server. Perhaps it was one of the modules I used which called for additional permissions? I apologize it's been a while so I'm not even sure which script called for this solution. I'll add a disclaimer about attemptin...
Best way to unselect a in jQuery?
...pler answer is
$("#selectID").val([]);
.val() works for select as well http://api.jquery.com/val/
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Delete a key from a MongoDB document using Mongoose
...in object and from there use it as usual.
Read more in mongoose api-ref:
http://mongoosejs.com/docs/api.html#document_Document-toObject
Example would look something like this:
User.findById(id, function(err, user) {
if (err) return next(err);
let userObject = user.toObject();
// use...
Fundamental difference between Hashing and Encryption algorithms
...thout the secret value. This is commonly used in secure cookie systems by HTTP frameworks, as well as in message transmission of data over HTTP where you want some assurance of integrity in the data.
A note on hashes for passwords:
A key feature of cryptographic hash functions is that they should...
不同品牌的防火墙组成高可靠性集群 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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第三种方法
利用linux的策略路由
网上查找的参考资料
http://www.cnblogs.com/gunl/archive/2010/09/14/1826234.html
知识准备
一、原理说明
1、路由表（table）从0到255进行编号，每个编号可以对应一个别名，编号和别名的对应关系在linux...
How to implement static class member functions in *.cpp file?
...
Sure You can. I'd say that You should.
This article may be usefull:
http://www.learncpp.com/cpp-tutorial/812-static-member-functions/
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fol...
What is the default text size on Android?
...
http://petrnohejl.github.io/Android-Cheatsheet-For-Graphic-Designers/
Text size
Type Dimension
Micro 12 sp
Small 14 sp
Medium 18 sp
Large 22 sp
...