大约有 15,900 项符合查询结果（耗时：0.0279秒） [XML]
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.
...
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...
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...
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.
...
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 ...
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
...
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...
Passing multiple variables in @RequestBody to a Spring MVC controller using Ajax
...ementation that you can do though:
Say this is your json:
{
"str1": "test one",
"str2": "two test"
}
and you want to bind it to the two params here:
@RequestMapping(value = "/Test", method = RequestMethod.POST)
public boolean getTest(String str1, String str2)
First define a custom ann...
Mockito. Verify method arguments
...entCaptor<Person> captor;
//... MockitoAnnotations.initMocks(this);
@Test public void test() {
//...
verify(mock).doSomething(captor.capture());
assertEquals("John", captor.getValue().getName());
}
share
...
What is the 'instanceof' operator used for in Java?
...
instanceof keyword is a binary operator used to test if an object (instance) is a subtype of a given Type.
Imagine:
interface Domestic {}
class Animal {}
class Dog extends Animal implements Domestic {}
class Cat extends Animal implements Domestic {}
Imagine a dog objec...