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When should I use the new keyword in C++?
...
Method 1 (using new)
Allocates memory for the object on the free store (This is frequently the same thing as the heap)
Requires you to explicitly delete your object later. (If you don't delete it, you could create a memory leak)
Memory stays al...
Why should C++ programmers minimize use of 'new'?
...
There are two widely-used memory allocation techniques: automatic allocation and dynamic allocation. Commonly, there is a corresponding region of memory for each: the stack and the heap.
Stack
The stack always allocates memory in a sequential fashion. It c...
How to compute the similarity between two text documents?
...ion_map = dict((ord(char), None) for char in string.punctuation)
def stem_tokens(tokens):
return [stemmer.stem(item) for item in tokens]
'''remove punctuation, lowercase, stem'''
def normalize(text):
return stem_tokens(nltk.word_tokenize(text.lower().translate(remove_punctuation_map)))
ve...
SAML: Why is the certificate within the Signature?
...ficate is in the SAML message. This is used to check the signature for the token itself, and of course to allow receivers to tell who issued the token and treat it accordingly.
The fact that it's in there is part of the XML digital signature specs, it's not really anything SAML specific. Without th...
How to fix “Referenced assembly does not have a strong name” error?
...the IL file generated in step 1 above. You will need to add the public key token of B.dll to the reference. You get this token by calling
sn -Tp B.dll
which will give you the following output:
Microsoft (R) .NET Framework Strong Name Utility Version 4.0.30319.33440
Copyright (c) Microsoft Cor...
error C2664: “std::list::list(const std::allocator &)”: 不能将参数 1...
error C2664: “std::list::list(const std::allocator &)”: 不能将参数 1 从 “std::vector”转换为“const std::allocator &”错误日志：error C2664: std::list<_Ty>::list(const std::allocator<_Ty> &): 不能将参数 1 从std::vector<_Ty>转换为const std::...错误日志：
error ...
What can you use Python generator functions for?
...on't know if you are going to need all results, or where you don't want to allocate the memory for all results at the same time. Or for situations where the generator uses another generator, or consumes some other resource, and it's more convenient if that happened as late as possible.
Another use ...
What are Runtime.getRuntime().totalMemory() and freeMemory()?
...hy there is a totalMemory() AND a maxMemory(). The answer is that the JVM allocates memory lazily. Lets say you start your Java process as such:
java -Xms64m -Xmx1024m Foo
Your process starts with 64mb of memory, and if and when it needs more (up to 1024m), it will allocate memory. totalMemory...
How can a time function exist in functional programming?
...actions. This type means: An action of type IO is a function, that takes a token of type RealWorld and returns a new token, together with a result.
The idea behind this is that each IO action mutates the outside state, represented by the magical token RealWorld. Using monads, one can chain multiple...
Facebook Graph API v2.0+ - /me/friends returns empty, or only friends who also use my application
..._friends endpoint in order to render a custom invite dialog, then pass the tokens returned by this API to the standard Requests Dialog.
In other cases, apps are no longer able to retrieve the full list of a user's friends (only those friends who have specifically authorized your app using the user...