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Most efficient way of making an if-elif-elif-else statement when the else is done the most?
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100
The code...
options.get(something, doThisMostOfTheTime)()
...looks like it ought to be fast...
中关村服务辐射百万创业者 - 资讯 - 清泛网 - 专注C/C++及内核技术
...庆、池宇峰、吕大龙、南立新、彭志强、童之磊、方方等100多名大咖级创业导师。他们的使命是‘普及创新方法论’、‘实现商业加速’、‘培养行业领军人’，他们是创业者的‘创业管家’和‘创业...
Why doesn't height: 100% work to expand divs to the screen height?
...r the <html>, so what you should do is add this:
html {
height: 100%;
}
And your code should work fine.
* { padding: 0; margin: 0; }
html, body, #fullheight {
min-height: 100% !important;
height: 100%;
}
#fullheight {
width: 250px;
background: blue;
}
<div...
How to make a always full screen?
... <style type="text/css">
html, body {
height: 100%;
margin: 0;
}
#wrapper {
min-height: 100%;
}
</style>
<!--[if lte IE 6]>
<style type="text/css">
#container {
height: 10...
What is the fastest factorial function in JavaScript? [closed]
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You can search for (1...100)! on Wolfram|Alpha to pre-calculate the factorial sequence.
The first 100 numbers are:
1, 2, 6, 24, 120, 720, 5040, 40320, 362880, 3628800, 39916800, 479001600, 6227020800, 87178291200, 1307674368000, 20922789888000, 3556...
Scatter plot and Color mapping in Python
...le
import numpy as np
import matplotlib.pyplot as plt
x = np.random.rand(100)
y = np.random.rand(100)
t = np.arange(100)
plt.scatter(x, y, c=t)
plt.show()
Here you are setting the color based on the index, t, which is just an array of [1, 2, ..., 100].
Perhaps an easier-to-understand example ...
海量数据相似度计算之simhash短文本查找 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...。但是随着业务的增长 simhash的数据也会暴增，如果一天100w，10天就1000w了。我们如果插入一条数据就要去比较1000w次的simhash，计算量还是蛮大，普通PC 比较1000w次海明距离需要 300ms ，和5000w数据比较需要1.8 s。看起来相似度计算...
How to create the most compact mapping n → isprime(n) up to a limit N?
...r is prime. I used python 3.6 on ubuntu 17.10; I tested with numbers up to 100.000 (you can test with bigger numbers using my code below).
This first plot compares the functions (which are explained further down in my answer), showing that the last functions do not grow as fast as the first one whe...
How to place and center text in an SVG rectangle
...t to do central)
Here is a simple demo:
<svg width="200" height="100">
<rect x="0" y="0" width="200" height="100" stroke="red" stroke-width="3px" fill="white"/>
<text x="50%" y="50%" dominant-baseline="middle" text-anchor="middle">TEXT</text>
</svg>
...
Javascript - Track mouse position
...ntially, when a page loads - this tracker should start and for (say) every 100 ms, I should get the new value of posX and posY and print it out in the form.
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