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Resize a large bitmap file to scaled output file on Android
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Thanks @Ofir but this transformation doesn't conserve the image orientation :-/
– JoeCoolman
Sep 24 '15 at 5:22
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What is the difference between memoization and dynamic programming?
...zation, which solves only the needed sub-problems
DP has the potential to transform exponential-time brute-force solutions into polynomial-time algorithms.
DP may be much more efficient because its iterative
On the contrary, Memoization must pay for the (often significant) overhead due to recur...
AppInventor2 .keystore 证书文件 - App版本升级的奥秘 · App Inventor 2 中文网
... AppInventor2 .keystore 证书文件 - App版本升级的奥秘
如何固定证书？
深入核心原理
秘钥的生成原理
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提问：我每次想更新软件的时候，签名不一样还要卸载重装，这样...
BSS段、数据段、代码段、堆与栈 剖析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...段：BSS 段（bss segment）通常是指用来存放程序中未初始化的全局变量的一块内存区域。BSS 是英文Block Started by Symbol 的...BSS 段：BSS 段（bss segment）通常是指用来存放程序中未初始化的全局变量的一块内存区域。BSS 是英文Block Starte...
How to smooth a curve in the right way?
...c (like your example), then a FFT is the right way to go. Take the fourier transform and subtract out the low-contributing frequencies:
import numpy as np
import scipy.fftpack
N = 100
x = np.linspace(0,2*np.pi,N)
y = np.sin(x) + np.random.random(N) * 0.2
w = scipy.fftpack.rfft(y)
f = scipy.fftpac...
Rails raw SQL example
...ery of the ActiveRecord class, because it returns the mapping of the query transforming into object, so it gets very practical and productive to iterate with the objects when the subject is Raw SQL.
Example:
values = ActiveRecord::Base.connection.exec_query("select * from clients")
p values
and ...
Boost智能指针——shared_ptr - C/C++ - 清泛网 - 专注C/C++及内核技术
...shared_ptrboost::scoped_ptr虽然简单易用，但它不能共享所有权的特性却大大限制了其使用范围，而boost::shared_ptr可以解决这一局限。顾名思义，boos...boost::scoped_ptr虽然简单易用，但它不能共享所有权的特性却大大限制了其使用范围，...
Most concise way to convert a Set to a List
...ibility is to make use of collectingAndThen method which allows some final transformation to be done before returning result:
List<String> stringList4 = stringSet.stream().collect(collectingAndThen(
toCollection(ArrayList::new),Collections::unmodifiableList));
One point to note ...
不穿绿衣服！盘点股民的五个奇葩迷信行为 - 轻松一刻 - 清泛网 - 专注C/C++...
不穿绿衣服！盘点股民的五个奇葩迷信行为6月底以来，股市一直低迷，股民们人心惶惶，不知该何去何从。为了能尽量减少亏损，已经想尽了一切能用的招数，甚至是那些因上半年的牛市而一度有所减轻的迷信行为又开始重出...
三只松鼠获3亿融资 创始人笑称：本来不想要的 - 资讯 - 清泛网 - 专注C/C++...
三只松鼠获3亿融资 创始人笑称：本来不想要的在创业过程中，章燎原向来有很强的危机意识，他曾总结三只松鼠的几种死法：最大的风险是食品安全，食品安全风险在中国没有人彻底的解决，但其希望用互联网信息化、数据彻...