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data.table vs dplyr: can one do something well the other can't or does poorly?
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4 Answers
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Code Golf: Collatz Conjecture
...>> 123 --> 370 --> 185 --> 556 --> 278 --> 139 --> 418 --> 209 --> 628 --> 314
; >> --> 157 --> 472 --> 236 --> 118 --> 59 --> 178 --> 89 --> 268 --> 134 --> 67
; >> --> 202 --> 101 --> 304 --> 152 --> 76 -->...
Python function overloading
...t)
... def add_bullet(sprite, curve, speed):
... print("Called version 4")
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>>> sprite = Sprite('Turtle')
>>> start = Point(1,2)
>>> direction = Vector(1,1,1)
>>> speed = 100 #km/h
>>> acceleration = 5.0 #m/s
>>> script = lambda sprite: s...
Why are only a few video games written in Java? [closed]
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Michael MadsenMichael Madsen
50.4k66 gold badges6666 silver badges8080 bronze badges
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How can I recover a removed file in Mercurial (if at all)?
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answered Jul 4 '10 at 10:54
BungleFeetBungleFeet
1,75511 gold badge1212 silver badges77 bronze badges
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Apache .htaccess 禁止访问某目录方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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1、错误文档的定位
常见的客户端请求错误返回代码：
401 Authorization Required
403 Forbidden
404 Not Found
405 Method Not Allowed
408 Request Timed Out
411 Content Length Required
412 Precondition Failed
413 Request Entity Too Long
414 Request URI Too Long
415 Unsuppo...
Why is this program erroneously rejected by three C++ compilers?
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edited Apr 1 '11 at 1:45
community wiki
2 r...
PostgreSQL: Show tables in PostgreSQL
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Drop columns whose name contains a specific string from pandas DataFrame
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import pandas as pd
import numpy as np
array=np.random.random((2,4))
df=pd.DataFrame(array, columns=('Test1', 'toto', 'test2', 'riri'))
print df
Test1 toto test2 riri
0 0.923249 0.572528 0.845464 0.144891
1 0.020438 0.332540 0.144455 0.741412
cols = [c for c...
How to maximize the browser window in Selenium WebDriver (Selenium 2) using C#?
... can be tracked here: http://code.google.com/p/selenium/issues/detail?id=174
A workaround would be to use the JavascriptExector as follows:
public void resizeTest() {
driver.Navigate().GoToUrl("http://www.example.com/");
((IJavaScriptExecutor)driver).ExecuteScript("window.resizeTo(1024, 768);"...