path

问题 How can an executable with spaces be run using std::system on Windows without using C++11 ? I've tried the seemingly obvious placing quotes around the path with spaces, but in the console window that pops up running the command I get a message that indicates that the full executable path is being split on spaces. For example, I've tried the following: #include <cstdlib> int main() { int no_spaces_forward_rc = std::system("c:/IronPython2.7/ipy -c \"print 'no_spaces_forward'\""); // no_spaces

问题 I'm using networkx and trying to find all the walks with length 3 in the graph, specifically the paths with three edges. I tried to find some information about the algorithms in the networkx documentation but I could only find the algorithms for the shortest path in the graph. Can I find a length of a path trough specific nodes, for example a path trough nodes 14 -> 11 -> 12 -> 16 if the shortest path is 14 -> 15 -> 16? Here's an image of a graph for an example: 回答1: Simplest version (another

问题 I am working on a box which I don't have root access. However, there is a folder /share which would be accessed for everyone to read and write. I want to figure out a way to put python libraries so that everyone could access and use them. I figured out that I can put the egg file in the /share/pythonLib folder and in the python script. import sys sys.path.append("/share/pythonLib/foo.egg") import foo and it would work for everyone, however, I am not sure every library has egg version. For

问题 This question already has answers here : Change R default library path using .libPaths in Rprofile.site fails to work (14 answers) Closed 2 years ago . I have Ubuntu 16.04 and after update of R to 3.4.1 version it does not see my packages even though they have also been updated: > library(dplyr) Error in library(dplyr) : there is no package called ‘dplyr’ Packages are there: $ ls ~/R/x86_64-pc-linux-gnu-library/3.4/ | grep plyr dplyr plyr My .libPaths : > .libPaths() [1] "/usr/local/lib/R

问题 This question already has answers here : Change R default library path using .libPaths in Rprofile.site fails to work (14 answers) Closed 2 years ago . I have Ubuntu 16.04 and after update of R to 3.4.1 version it does not see my packages even though they have also been updated: > library(dplyr) Error in library(dplyr) : there is no package called ‘dplyr’ Packages are there: $ ls ~/R/x86_64-pc-linux-gnu-library/3.4/ | grep plyr dplyr plyr My .libPaths : > .libPaths() [1] "/usr/local/lib/R

问题 I've struggled for hours with this and although I found a solution, I don't like it. Is there a built in way to solve this: You are on Windows with a variable containing a path. You are trying to open a file with it, but it contains escape characters that you can't determine until runtime. If you use 'shutil' and do: shutil.copy(file_path, new_file_path) It works fine. But if you try and use the same path with: f = open(file_path, encoding="utf8") It doesn't work because the '\a' in the path

问题 I've struggled for hours with this and although I found a solution, I don't like it. Is there a built in way to solve this: You are on Windows with a variable containing a path. You are trying to open a file with it, but it contains escape characters that you can't determine until runtime. If you use 'shutil' and do: shutil.copy(file_path, new_file_path) It works fine. But if you try and use the same path with: f = open(file_path, encoding="utf8") It doesn't work because the '\a' in the path

问题 If I have a tarball, helloworld.tar.gz in a local directory, say /home/user/tarballs/, how can I make my bitbake recipe fetch from that directory? my helloworld.bb is SECTION = "examples" LICENSE = "Proprietary" LIC_FILES_CHKSUM = "file://COPYING; md5=1b1b8016e15e07a2fec59623ebf12345" SRC_URI = "file://helloworld.tar.gz" but when I bitbake, I get the below warning message: WARNING: Unable to get checksum for helloworld SRC_URI entry helloworld.tar.gz: file could not be found I read something

问题 I'm surprised there's not an overload that can take a string array. Anyway, what is the best way to avoid nesting calls to Path.Combine? pathValue = Path.Combine(path1, Path.Combine(path2, Path.Combine(path3, path4))) This seems inefficient since it results in four new strings being created just to get one. 回答1: The efficiency side of things isn't the problem IMO - it's the usability side of things. Personally I think there ought to be an overload of: Combine(string first, string second,

问题 I'm surprised there's not an overload that can take a string array. Anyway, what is the best way to avoid nesting calls to Path.Combine? pathValue = Path.Combine(path1, Path.Combine(path2, Path.Combine(path3, path4))) This seems inefficient since it results in four new strings being created just to get one. 回答1: The efficiency side of things isn't the problem IMO - it's the usability side of things. Personally I think there ought to be an overload of: Combine(string first, string second,