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What are the differences between local branch, local tracking branch, remote branch and remote track
...m:Flimm/example.git
HEAD branch: master
Remote branches:
io-socket-ip new (next fetch will store in remotes/origin)
master tracked
new-branch tracked
Local ref configured for 'git pull':
master merges with remote master
new-branc...
How to avoid reverse engineering of an APK file?
... is looking for a needle in a haystack. Insert random classes containing snippets from the internet, or just functions for calculating random things like the Fibonacci sequence. Make sure these classes compile, but aren't used by the actual functionality of the app. Add enough of these false classes...
Fast Bitmap Blur For Android SDK
...ded 500ms while the blurring only took another 250 ms or so.
Use Renderscript
Renderscript provides ScriptIntrinsicBlur which is a Gaussian blur filter. It has good visual quality and is just the fastest you realistically get on Android. Google claims to be "typically 2-3x faster than a multithrea...
What's the “big idea” behind compojure routes?
... the HTTP response.
;; Let's take a look at an example:
(defn what-is-my-ip [request]
{:status 200
:headers {"Content-Type" "text/plain"}
:body (:remote-addr request)})
Pretty simple, but also quite low-level.
The above handler can be defined more concisely using the ring/util library.
...
How to install mongoDB on windows?
..., it’s not an installation it’s just Downloading…
I. Download the zip file http://www.mongodb.org/downloads
II. Extract it and copy the files into your desired location.
III. Start the DB engine.
IV. Test the installation and use it.
That's it! So simple, right? Ok let’s start
1. Downlo...
Hidden Features of MySQL
... access. For example:
--datadir will specify the data directory and
--skip-innodb will turn off the inno option and save you 10-20M
More here
http://dev.mysql.com/tech-resources/articles/mysql-c-api.html
Download Chapter 7 - Free
InnoDB is transactional but there is a performance overhead that...
内存管理内幕：动态分配的选择、折衷和实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...好处在于它有很多其他工具，可以处理编写多平台服务器软件所有方面的事情。要深入了解 GNU obstack 和 Apache 的池式内存实现，请参阅 参考资料部分中指向这些实现的文档的链接。
下面的假想代码列表展示了如何使用 obstack：
...
Create an index on a huge MySQL production table without table locking
...SQL is really, really stupid about this (and a few other things).
Test Script:
(
for n in {1..50}; do
#(time mysql -uroot -e 'select * from website_development.users where id = 41225\G'>/dev/null) 2>&1 | grep real;
(time mysql -uroot -e 'update website_development.users set...
Daylight saving time and time zone best practices [closed]
...Perl, use DateTime.
If using Python, use pytz or dateutil.
If using JavaScript, use moment.js with the moment-timezone extension.
If using PHP > 5.2, use the native time zones conversions provided by DateTime, and DateTimeZone classes. Be careful when using DateTimeZone::listAbbreviations() - see...
Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM
...W3520. You can verify that the program works using the following Python script, assuming a program name of sort1mb.exe.
from subprocess import *
import random
sequence = [random.randint(0, 99999999) for i in xrange(1000000)]
sorter = Popen('sort1mb.exe', stdin=PIPE, stdout=PIPE)
for value in sequ...