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Passing command line arguments from Maven as properties in pom.xml
...le, where they can then be accessed from your Java code.
In my case it is test code that needs to access this properties file, so in the pom the properties file is written to maven's testOutputDirectory:
<configuration>
<outputFile>${project.build.testOutputDirectory}/my.properties...
Difference between float and decimal data type
...
An excellent test. Years ago the C lib's data conversion functions would often create tons of minute differences in values converted from ASCII to float when compared against those in, say, SQLServer. This is rarely true anymore. Testing ...
Detecting an undefined object property
...
@Zack Your tests for isNullorUndefined did not consider the case where you call isNullOrUndefined(f) and f is undeclared (i.e. where there is no "var f" declaration).
– pnkfelix
Feb 15 '13 at 15:08...
How to get a complete list of object's methods and attributes?
...en to go for its __bases__:
# code borrowed from the rlcompleter module
# tested under Python 2.6 ( sys.version = '2.6.5 (r265:79063, Apr 16 2010, 13:09:56) \n[GCC 4.4.3]' )
# or: from rlcompleter import get_class_members
def get_class_members(klass):
ret = dir(klass)
if hasattr(klass,'__b...
Importing from builtin library when module with same name exists
...
Works like a charm... Used this to test while developing a library, so that my tests were always using the developing version and not the published (and installed) one. In windows 10 i had to write the path to my module like this: file_path=r"C:\Users\My Use...
Is it possible to figure out the parameter type and return type of a lambda?
...e element of a tuple
// composed of those arguments.
};
};
// test code below:
int main()
{
auto lambda = [](int i) { return long(i*10); };
typedef function_traits<decltype(lambda)> traits;
static_assert(std::is_same<long, traits::result_type>::value, "err");
...
How do I provide custom cast support for my class?
...t from that example, using the explicit method, if you do:
string name = "Test";
Role role = (Role) name;
Then everything is fine; however, if you use:
object name = "Test";
Role role = (Role) name;
You will now get an InvalidCastException because string cannot be cast to Role, why, the compil...
How to get my IP address programmatically on iOS/macOS?
...s). Loopback addresses now returned, but its easy for you to uncomment the test to exclude them yourself.
EDIT2: (by some unknown person): Improved further March 13, 2015: In case the user uses a VPN (regardless over WiFi or Cellular), the previous code would have failed. Now, it works even with VP...
What is PECS (Producer Extends Consumer Super)?
...d when you both get and put.
Example in Java:
class Super {
Object testCoVariance(){ return null;} //Covariance of return types in the subtype.
void testContraVariance(Object parameter){} // Contravariance of method arguments in the subtype.
}
class Sub extends Super {
@Override
...
What is the difference between NaN and None?
...nswer the second question:
You should be using pd.isnull and pd.notnull to test for missing data (NaN).
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