大约有 15,500 项符合查询结果(耗时:0.0200秒) [XML]

https://stackoverflow.com/ques... 

What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?

...;var.int1+diff==&var.int2)' is false. From what I can say with my puny test cases, you are Stop at 0x0013f3: (106) Invalid instruction 0x00dd printf crashes. "O_O" gcc 4.4@x86_64-suse-linux We like to think that: ..05 int has the size of pointers but 'sizeof(int)==sizeof(void*)' is false. ...
https://stackoverflow.com/ques... 

Quickly reading very large tables as dataframes

... Thanks for the tips Richie. I did a little testing, and it seems that the performance gains with using the nrow and colClasses options for read.table are quite modest. For example, reading a ~7M row table takes 78s without the options, and 67s with the options. (note...
https://stackoverflow.com/ques... 

Python speed testing - Time Difference - milliseconds

What is the proper way to compare 2 times in Python in order to speed test a section of code? I tried reading the API docs. I'm not sure I understand the timedelta thing. ...
https://stackoverflow.com/ques... 

ADB Install Fails With INSTALL_FAILED_TEST_ONLY

... Looks like you need to modify your AndroidManifest.xml Change android:testOnly="true" to android:testOnly="false" or remove this attribute. If you want to keep the attribute android:testOnly as true you can use pm install command with -t option, but you may need to push the apk to device first...
https://stackoverflow.com/ques... 

check if directory exists and delete in one command unix

...ot. This command may work and produce similar results but actually doing a test before the command makes more sense. – Ankur Chauhan Jan 28 '13 at 5:04 ...
https://stackoverflow.com/ques... 

Using the “start” command with parameters passed to the started program

... If you want passing parameter and your .exe file in test folder of c: drive start "parameter" "C:\test\test1.exe" -pc My Name-PC -launch If you won't want passing parameter and your .exe file in test folder of c: drive start "" "C:\test\test1.exe" -pc My Name-PC -launch I...
https://stackoverflow.com/ques... 

Using unset vs. setting a variable to empty

I'm currently writing a bash testing framework, where in a test function, both standard bash tests ( [[ ) as well as predefined matchers can be used. Matchers are wrappers to '[[' and besides returning a return code, set some meaningful message saying what was expected. ...
https://stackoverflow.com/ques... 

Creating a ZIP Archive in Memory Using System.IO.Compression

..."Bar!"); } } using (var fileStream = new FileStream(@"C:\Temp\test.zip", FileMode.Create)) { memoryStream.Seek(0, SeekOrigin.Begin); memoryStream.CopyTo(fileStream); } } So we need to call dispose on ZipArchive before we can use it, which means passing 'true' as the ...
https://stackoverflow.com/ques... 

How do I use sudo to redirect output to a location I don't have permission to write to?

...rformed by your shell which does not have the permission to write to /root/test.out. The redirection of the output is not performed by sudo. There are multiple solutions: Run a shell with sudo and give the command to it by using the -c option: sudo sh -c 'ls -hal /root/ > /root/test.out' Cre...
https://stackoverflow.com/ques... 

How to “perfectly” override a dict?

...nsform__(self, key): return key.lower() s = MyTransformedDict([('Test', 'test')]) assert s.get('TEST') is s['test'] # free get assert 'TeSt' in s # free __contains__ # free setdefault, __eq__, and so on import pickle # works too sinc...