system

问题 I've done alot of research on this and found a number of help sites but still can't understand why this sometimes doesn't work. I'm trying to access a sharepoint site (to which there are no restrictions for me) and extract all the files in a folder within that site. Sometimes my Path works and it does it, other times it does not. I have a feeling it works if I've gone into the sharepoint site on my browser before but can't confirm that (because I just tried it again now and it doesnt work

问题 I've done alot of research on this and found a number of help sites but still can't understand why this sometimes doesn't work. I'm trying to access a sharepoint site (to which there are no restrictions for me) and extract all the files in a folder within that site. Sometimes my Path works and it does it, other times it does not. I have a feeling it works if I've gone into the sharepoint site on my browser before but can't confirm that (because I just tried it again now and it doesnt work

问题 I am trying to use Python to select a variable from a list, then speak it outloud using the bash command. Right now I have something like this foo = ["a","b","c","d"] from random import choice x = choice(foo) foo.remove(x) from os import system system('say x') This says "x", what I need is for it to say the value of the x variable. 回答1: I suppose you can use os.system , but better might be subprocess : import subprocess subprocess.call(['say',x]) 回答2: you are passing astring you can use value

问题 I'm trying to connect to my school's ssh server using a simple C++ program that I wrote. My windows computer has OpenSSH Client installed and I'm able to establish a connection using the command prompt. Here's how it works via the command prompt: C:\Users\Username>ssh username@example.server.name Password: Last login: Sat Sep 5 15:20:44 2020 from 117.194.240.211 username@example:~$ I was hoping to replicate this action with a simple C++ program I wrote. Here's the code. #include <iostream>

问题 I'm trying to connect to my school's ssh server using a simple C++ program that I wrote. My windows computer has OpenSSH Client installed and I'm able to establish a connection using the command prompt. Here's how it works via the command prompt: C:\Users\Username>ssh username@example.server.name Password: Last login: Sat Sep 5 15:20:44 2020 from 117.194.240.211 username@example:~$ I was hoping to replicate this action with a simple C++ program I wrote. Here's the code. #include <iostream>

问题 I am trying to solve the following system of four equations. I have tried using the "rootSolve" package but it does not seem like I can find a solution this way. The code I am using is the following: model <- function(x) { F1 <- sqrt(x[1]^2 + x[3]^2) -1 F2 <- sqrt(x[2]^2 + x[4]^2) -1 F3 <- x[1]*x[2] + x[3]*x[4] F4 <- -0.58*x[2] - 0.19*x[3] c(F1 = F1, F2 = F2, F3 = F3, F4 = F4) } (ss <- multiroot(f = model, start = c(0,0,0,0))) But it gives me the following error: Warning messages: 1: In stode

问题 I have a stream of line-buffered data, and many readers from other processes The readers need to attach to the system dynamically, they are not known to the process writing the stream First i tried to read every line and simply send them to a lot of pipes #writer command | while read -r line; do printf '%s\n' "$line" | tee listeners/* done #reader mkfifo listeners/1 cat listeners/1 But that's consume a lot of CPU So i though about writing to a file and cleaning it repeatedly #writer command >

问题 I am trying to figure out what boost system error code 2 is. Within a program they print out the boost error code. However, I am not sure how to look up this error code. Any help would be apprecaited. 回答1: Off the top of my head: ENOENT/FileNotFound See the errorcodes in http://www.boost.org/doc/libs/1_58_0/libs/system/doc/reference.html#Header-error_code Live On Coliru #include <boost/system/error_code.hpp> #include <iostream> int main() { boost::system::error_code ec; ec.assign(2, boost:

问题 I am trying to tidy up a process that uses multiple system calls from inside a ruby script executed using rubyw.exe (1.8.7). As far as I can understand the main reason for rubyw.exe is that it doesn't pop up a command prompt to distract the user. However it appears that the system calls from within that process still do generate these popups which is very distracting for the users of this process script. Does anyone know how to do this? There are lots of questions similar to this on SO but

问题 I would like some general info on system apps. I am working with a manufacturer who is willing to give me the info required to make my app a system app. However, I do not know exactly what this information should be and how to change with my app to make it a system app with the given information. I believe I need the something in my manifest like this android:sharedUserId="android.uid.system" and then I need to sign my app with the manufactures key? I am not sure could someone explain to me