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Is there a range class in C++11 for use with range based for loops?
...
I wrote a library called range for exactly the same purpose except it is a run-time range, and the idea in my case came from Python. I considered a compile-time version, but in my humble opinion there is no real advantage to gain out the compi...
How to pretty print nested dictionaries?
...mater(tuple, self.__class__.format_tuple)
def set_formater(self, obj, callback):
self.types[obj] = callback
def __call__(self, value, **args):
for key in args:
setattr(self, key, args[key])
formater = self.types[type(value) if type(value) in self.types e...
Implementing two interfaces in a class with same method. Which interface method is overridden?
... where you need to implement two Colliding Interface, say Foo and Bar. Basically you have your class implement one of the interfaces, say Foo, and provide a Bar asBar() method to return an inner class that implements the second Bar interface. Not perfect since your class is ultimately not "a Bar", b...
Print text instead of value from C enum
...e 500 as value
/* ... and so on */
}
END_ENUM(MyEnum)
then in a file called EnumToString.c:
#include "enum.h"
#define GENERATE_ENUM_STRINGS // Start string generation
#include "enum.h"
#undef GENERATE_ENUM_STRINGS // Stop string generation
then in main.c:
int main(int ar...
Why does X[Y] join of data.tables not allow a full outer join, or a left join?
...ifferent so change to be the same as `merge`
setcolorder(le, names(mallx))
identical(le, mallx)
# [1] TRUE
If you want a full outer join
# the unique values for the keys over both data sets
unique_keys <- unique(c(X[,t], Y[,t]))
Y[X[J(unique_keys)]]
## t b a
## 1: 1 NA 1
## 2: 2 NA 4
## ...
Anatomy of a “Memory Leak”
...e seen is in Chapter 7 of the free Foundations of Programming e-book.
Basically, in .NET a memory leak occurs when referenced objects are rooted and thus cannot be garbage collected. This occurs accidentally when you hold on to references beyond the intended scope.
You'll know that you have leaks ...
Read properties file outside JAR file
...;
}
In any part of the main program that needs the app.version value, we call its method as follows:
String version = null;
try{
version = getAppVersion();
}
catch (IOException ioe){
ioe.printStackTrace();
}
sha...
Is there a practical use for weak references? [duplicate]
...nd retain Soft References when it can.
There is another kind of reference called a Phantom Reference. This is used in the GC clean up process and refers to an object which isn't accessible to "normal" code because its in the process of being cleaned up.
...
What's the difference between “groups” and “captures” in .NET regular expressions?
... a "capture" are when it comes to .NET's regular expression language. Consider the following C# code:
5 Answers
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Is memcached a dinosaur in comparison to Redis? [closed]
...tain classes of problems but, traditionally, memcache has been used specifically to solve issues of performance with persistant databases. I also think a glaring omission from your list is product maturity. Memcache is a mature product with around a decade of experience. Redis is promising, but h...