infinite

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: what is the quickest/simplest way to drop nan and inf/-inf values from a pandas DataFrame without resetting mode.use_inf_as_null ? I'd like to be able to use the subset and how arguments of dropna , except with inf values considered missing, like: df.dropna(subset=["col1", "col2"], how="all", with_inf=True) is this possible? Is there a way to tell dropna to include inf in its definition of missing values? 回答1: The simplest way would be to first replace infs to NaN: df.replace([np.inf, -np.inf], np.nan) and then use the dropna : df.replace(

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: With the question Listing all the contents of a directory by breadth-first order results in low efficiency I learned that the low efficiency is due to a strange behavior of the recursive monad functions. Try sequence $ map return [1..]::[[Int]] sequence $ map return [1..]::Maybe [Int] and ghci will fall into an endless calculation. If we rewrite the sequence function in a more readable form like follows: sequence' [] = return [] sequence' (m:ms) = do {x and try: sequence' $ map return [1..]::[[Int]] sequence' $ map return [1..]::Maybe [Int]

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: A simple recursive function is created as shown below. power <- function ( x , n ) { if ( n >= 1 ) x * power ( x , n - 1 ) else 1 } When n is set to be 1e4, it shows an error of infinite recursion . As the error message suggests, I updated the option parameter and, in this case, stack overflow error is encountered. ## error to run power 10000 times with defalult option options () $expressions #[1] 5000 power ( 2 , 1e3 ) #[1] 1.071509e+301 power ( 2 , 1e4 ) #Error: evaluation nested too deeply: infinite recursion / options

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: In SML I have created three infinite lists namely fibonacci , evenfib and oddfib . Now what I want to do is create a fourth list which will contain the first 10 numbers of evenfib and the first 10 numbers of oddfib and merge them into pairs of one evenfib and one oddfib using the zip function and create a fourth list. I have written a zip function as follows but it doesn't work. fun fib a b = CONS ( a , fn () => fib b ( a + b )); fun odd n = if ( n mod 2 = 1 ) then true else false ; fun even n = if ( n mod 2 = 0 ) then true else

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I want to make a rotation of my loading icon by CSS. I have an icon and the following code: */ /*--> */ /*--> */ /*--> */ /*--> */ But it doesn't work. How can the icon be rotated using CSS? 回答1: @-webkit-keyframes rotating /* Safari and Chrome */ { from { -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); transform: rotate(0deg); } to { -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); transform: rotate(360deg); } } @keyframes rotating { from { -ms-transform: rotate(0deg); -moz-transform: rotate(0deg); -webkit

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am working on simple character device driver. I have implemented read and write functions in the module, the problem is when I try to read the device file using cat /dev/devicefile it is going into infinite loop i.e. reading the same data repeatedly. Can someone suggest me any solution to this problem? Below is my driver code. #include #include #include #include #include MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("character device driver"); MODULE_AUTHOR("Srinivas"); static char msg[100]={0}; static int t; static int dev_open(struct inode *

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm currently developing an ionic app and successfully implemented an infinite scroll feature. It works fine on desktop browsers and newer android devices, however, i'm having problems with phones that run android version 4.1 or less. The problem: I open the page, it loads and displays the first 20 items just fine, i scroll to the bottom, the next 20 items load, but it doesn't let me scroll any further to see the next 20 items. Here is a GIF showing how it looks on my desktop (the way it's supposed to work). desktop gif Here is another GIF

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I've heard that threads in Python are not easy to handle and they become more tangled with tkinter. I have the following problem. I have two classes, one for the GUI and another for an infinite process. First, I start the GUI class and then the infinite process' class. I want that when you close the GUI, it also finishes the infinite process and the program ends. A simplified version of the code is the following: import time , threading from tkinter import * from tkinter import messagebox finish = False class tkinterGUI ( threading

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: This question already has an answer here: Why is scanf() causing infinite loop in this code? 13 answers In the example below, if I enter a character in Mac OS X terminal, the program will get stuck in an infinite loop, printing Please enter a number: line after line and never allowing the user to input anything. What's wrong with this code? What is the fix? I want to change the code in a way that if a number is not entered, the user is prompted with an error message and asked to enter a number again. #include int main(int argc, const char *

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I was wondering: Imagine a scenario where e.g. //POJO public class User { private String userName; private String name; private String surname; private List<Blog> blogList; //All getters and setters are found here and assume they're generated. } public class Blog { private String title; private String content; private User author; private Date datePublished; private Date dateLastModified; //All getters and setters have been generated (by Eclipse or NetBeans) } Imagine that these objects have been correctly mapped into their respective