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Assert equals between 2 Lists in Junit
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Don't transform to string and compare. This is not good for perfomance.
In the junit, inside Corematchers, there's a matcher for this => hasItems
List<Integer> yourList = Arrays.asList(1,2,3,4)
assertThat(yourList, C...
How can I produce an effect similar to the iOS 7 blur view?
...tten. Specifically he said do not try to do any animations of the frame or transform of this toolbar/view or anything like that, or bad things will happen. He also strongly suggested to file Radar bug reports on this, to build a case internally so we can get a real public API for this effect!
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mfc里面的140种颜色宏 - C/C++ - 清泛网 - 专注C/C++及内核技术
mfc里面的140种颜色宏MFC编码是需要配色的，可以参考使用。#pragma once #define CLR_LIGHTPINK RGB(255, 182, 193) ...mfc编码时需要配色的，可以参考使用。
#pragma once
#define CLR_LIGHTPINK RGB(255, 182, 193) // 浅粉红
#...
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...
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 ...
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 ...
Which is the best library for XML parsing in java [closed]
...ds to work with it. DOM also allows you to write to the document with Xslt transformations.
Example:
public static void parse() throws ParserConfigurationException, IOException, SAXException {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setValidating(true)...
Reshaping data.frame from wide to long format
...tableMisnomer When tidyr sees -c(var1, var2) it omits these variables when transforming the data from wide to long format.
– Jaap
Nov 18 '19 at 7:45
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