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Possibility of duplicate Mongo ObjectId's being generated in two different collections?
...ant to know more about how ObjectIds are created, here is the spec: http://www.mongodb.org/display/DOCS/Object+IDs#ObjectIDs-BSONObjectIDSpecification
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Understanding the Rails Authenticity Token
.... Here's the example from the Rails Guide on Security:
<a href="http://www.harmless.com/" onclick="
var f = document.createElement('form');
f.style.display = 'none';
this.parentNode.appendChild(f);
f.method = 'POST';
f.action = 'http://www.example.com/account/destroy';
f.submit();
...
What’s the difference between ScalaTest and Scala Specs unit test frameworks?
...pace of choice easier to navigate, I provide a decision tree here:
http://www.scalatest.org/quick_start
The matcher syntax is also different between ScalaTest and specs. In ScalaTest I tried to see how far I could go with operator notation, and ended up with matcher expressions that read very much...
Cannot issue data manipulation statements with executeQuery()
...ecuteUpdate is for.
Here's a very brief summary of the difference: http://www.coderanch.com/t/301594/JDBC/java/Difference-between-execute-executeQuery-executeUpdate
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Any good boolean expression simplifiers out there? [closed]
...
You can try Wolfram Alpha as in this example based on your input:
http://www.wolframalpha.com/input/?i=((A%20OR%20B)%20AND%20(NOT%20B%20AND%20C)%20OR%20C)&t=crmtb01&f=rc
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Where can I download Spring Framework jars without using Maven?
...es
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>spring-source-downlo...
自动生成Linux下Makefile全攻略(automake原理) - C/C++ - 清泛网 - 专注C/C++及内核技术
...一个经典的例子来实战一下。
详细步骤请参见:https://www.tsingfun.com/it/cpp/1823.htmlMakefile 自动编译 automake Makefile.am
Is cout synchronized/thread-safe?
...pecify whether writing to streams is thread-safe, but usually it's not.
www.techrepublic.com/article/use-stl-streams-for-easy-c-plus-plus-thread-safe-logging
and also: Are standard output streams in C++ thread-safe (cout, cerr, clog)?
UPDATE
Please have a look at @Martinho Fernandes' answer to...
How to generate a random number between a and b in Ruby?
...
UPDATE: Ruby 1.9.3 Kernel#rand also accepts ranges
rand(a..b)
http://www.rubyinside.com/ruby-1-9-3-introduction-and-changes-5428.html
Converting to array may be too expensive, and it's unnecessary.
(a..b).to_a.sample
Or
[*a..b].sample
Array#sample
Standard in Ruby 1.8.7+.
Note: was...
CMFCTabCtrl的使用、颜色样式调整 - C/C++ - 清泛网 - 专注C/C++及内核技术
...可以拖拽
m_wndTab.EnableTabSwap (FALSE);//不可拖拽
From:http://www.cnblogs.com/magic-cube/archive/2011/04/27/2029908.html
tsingfun.com补充:
设置AutoColor后的Tab效果如图:
MDI默认Tab样式改为上图效果的代码如下(MainFrm.cpp):
//CMDITabInfo mdiTab...
