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Boost程序库完全开发指南——深入C++“准”标准库高清PDF版 - 文档下载 - ...
...于官方文档的感觉。关于 Boost 的书，我更期待的也许是如何以 Boost 来解决一些经典的问题，向读者展示 Boost 的强大与实用的《Boost Cookbook》。从全书来看，作者 C++ 经验相当丰富，这本书完全没有展示出作者的实际水平，很期...
How to install the JDK on Ubuntu Linux
...d to the newest version is always linked from http://java.oracle.com.
As root, do;
cd /usr/local
tar xzf <the file you just downloaded>
As your normal user, add or change these two lines in your ~/.profile to point to the installation;
export JAVA_HOME=/usr/local/jdk1.7.0_13
export PATH=...
Tips for debugging .htaccess rewrite rules
... are using a shared hosting service and therefore don't have access to the root server configuration. They cannot avoid using .htaccess files for rewriting and cannot enable a RewriteLogLevel" as many respondents suggest. Also there are many .htaccess -specific pitfalls and constraints are are...
Where in a virtualenv does the custom code go?
...which project is used with which virtualenv? Add tiny shell scripts in the root of each folder with the name of the virtualenv you use it with?
– ccpizza
Jul 18 '18 at 10:40
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Get the distance between two geo points
...rectangular projection), much faster (it requires only 1 trig and 1 square root).
This approximation is relevant if your points are not too far apart. It will always over-estimate compared to the real haversine distance. For example it will add no more than 0.05382 % to the real distance if the del...
iPhone viewWillAppear not firing
...imated to appear or not.)
[myViewController viewWillAppear:NO];
Look at RootViewController.m in the Metronome example.
(I actually found Apple's example projects great. There's a LOT more than HelloWorld ;)
share
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What's Alternative to Singleton
...dependency injection to avoid singletons
Singletons are Pathological Liars
Root Cause of Singletons
Where have all the Singletons Gone?
The last article explains in detail how to move the creation of new objects into a factory, so you can avoid using singletons. Worth reading for sure.
In shor...
Why is SELECT * considered harmful?
...tage of using * is that in some situations it can take better advantage of MySQL's cache systems. If you're running large numbers of similar select queries that request different column names (select A where X,select B where X,...) using a select * where X will allow the cache to handle a larger num...
Build and Version Numbering for Java Projects (ant, cvs, hudson)
...is project is a webapp and I'm including this build-number.txt file in the root folder of the webapp - I don't really care who sees it.
We don't tag source control when this is done because we already have our Hudson job set up to tag it with the build number/timestamp when the build is successful....
How to list all the files in a commit?
... It should be noted that diff-tree won't work when looking at the root commit.
– jbranchaud
Mar 6 '13 at 5:52
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