filestreams

Python: Opening a file without creating a lock

由 痞子三分冷 提交于 2019-12-23 11:58:36
问题 I'm trying to create a script in Python to back up some files. But, these files could be renamed or deleted at any time. I don't want my script to prevent that by locking the file; the file should be able to still be deleted at any time during the backup. How can I do this in Python? And, what happens? Do my objects just become null if the stream cannot be read? Thank you! I'm somewhat new to Python. 回答1: As mentioned by kindall, this is a Windows-specific issue. Unix OSes allow deleting. To

Error #2044: Unhandled IOErrorEvent:. text=Error #2032: Stream Error

由 五迷三道 提交于 2019-12-13 04:00:56
问题 Good Day, I working in Android/IOS App using AIR 3.5. In this project I download ZIP file and extracted in specific folder, after that I using the assets ( IMG, XML and Sounds), everything work fine but when I load the sounds it's keep show this error. > Error #2044: Unhandled IOErrorEvent:. text=Error #2032: Stream Error. I tried to give it static location in android drive but same error happened. I tried to use URLRequest, FileStream, URLStream and same thing happened. I traced all files

What happens if I never call `close` on an open file stream? [duplicate]

由 倾然丶 夕夏残阳落幕 提交于 2019-12-12 07:44:36
问题 This question already has answers here : do I need to close a std::fstream? [duplicate] (3 answers) Closed 4 years ago . Below is the code for same case. #include <iostream> #include <fstream> using namespace std; int main () { ofstream myfile; myfile.open ("example.txt"); myfile << "Writing this to a file.\n"; //myfile.close(); return 0; } What will be the difference if I uncomment the myfile.close() line? 回答1: There is no difference. The file stream's destructor will close the file. You can

What happens if I never call `close` on an open file stream? [duplicate]

由 狂风中的少年 提交于 2019-12-03 09:54:01
This question already has an answer here: do I need to close a std::fstream? [duplicate] 3 answers Below is the code for same case. #include <iostream> #include <fstream> using namespace std; int main () { ofstream myfile; myfile.open ("example.txt"); myfile << "Writing this to a file.\n"; //myfile.close(); return 0; } What will be the difference if I uncomment the myfile.close() line? There is no difference. The file stream's destructor will close the file. You can also rely on the constructor to open the file instead of calling open() . Your code can be reduced to this: #include <fstream>

UTF-8-compliant IOstreams

由 痞子三分冷 提交于 2019-11-28 10:09:30
问题 Does GCC's standard library or Boost or any other library implement iostream-compliant versions of ifstream or ofstream that supports conversion between UTF-8-encoded (file-) streams and a std::vector<wchar_t> or std::wstring ? 回答1: Your question doesn't quite work. UTF-8 is a specific encoding, while wchar_t is a data type. Moreover, wchar_t is intended by the standard to represent the system's character set , but this is entirely left to platform, and the standard makes no requirements.
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