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Delete all files in directory (but not directory) - one liner solution
...iles from ABC (sub-directories are untouched):
Arrays.stream(new File("C:/test/ABC/").listFiles()).forEach(File::delete);
This deletes only files from ABC (and sub-directories):
Files.walk(Paths.get("C:/test/ABC/"))
.filter(Files::isRegularFile)
.map(Path::toFil...
Does Python have a string 'contains' substring method?
...class NoisyString(str):
def __contains__(self, other):
print(f'testing if "{other}" in "{self}"')
return super(NoisyString, self).__contains__(other)
ns = NoisyString('a string with a substring inside')
and now:
>>> 'substring' in ns
testing if "substring" in "a string...
How to append a char to a std::string?
...
I test the several propositions by running them into a large loop.
I used microsoft visual studio 2015 as compiler and my processor is an i7, 8Hz, 2GHz.
long start = clock();
int a = 0;
//100000000
std::string ...
Why am I getting “Unable to find manifest signing certificate in the certificate store” in my Excel
...er
Click on Select from store
Click on Select from file
Click on Create test certificate
Once either of these is done, you should be able to build it again.
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Error java.lang.OutOfMemoryError: GC overhead limit exceeded
I get this error message as I execute my JUnit tests:
20 Answers
20
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Print current call stack from a method in Python code
...k)
return func(*args, **kwds)
return wrapped
@stacktrace
def test_func():
return 42
print(test_func())
Output from sample:
test_func() called:
File "stacktrace_decorator.py", line 28, in <module>
print(test_func())
42
...
Stopping an Android app from console
... just stopping the app, since you mention wanting a "clean slate" for each test run, you can use adb shell pm clear com.my.app.package, which will stop the app process and clear out all the stored data for that app.
If you're on Linux:
adb shell ps | grep com.myapp | awk '{print $2}' | xargs adb ...
How do I find the caller of a method using stacktrace or reflection?
...and seems to be faster than the stack trace method.
The following program tests the speed of the different suggested methods (the most interesting bit is in the inner class SecurityManagerMethod):
/**
* Test the speed of various methods for getting the caller class name
*/
public class TestGetCa...
Android - Start service on boot
...d("TAG", "MyReceiver");
Intent serviceIntent = new Intent(context, Test1Service.class);
context.startService(serviceIntent);
}
}
public class Test1Service extends Service {
/** Called when the activity is first created. */
@Override
public void onCreate() {
...
Static Initialization Blocks
...o matter how many objects of that type you create.
Example:
public class Test {
static{
System.out.println("Static");
}
{
System.out.println("Non-static block");
}
public static void main(String[] args) {
Test t = new Test();
Test t2 = new Tes...