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What's the best way to check if a file exists in C?
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[...continuing...] Rather more esoterically, on POSIX systems, access() checks whether the real UID and real GID, rather than the effective UID and effective GID. This only matters to setuid or setgid programs, but then it matters intensely as it may...
M_PI works with math.h but not with cmath in Visual Studio
...ust make yourself a constant that defines the value and you have something more portable anyway :)
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What is the difference between an ORM and an ODM?
...f the data.
Examples of ORMs are nHibernate, Entity Framework, Dapper and more...
MongoDB is an example of a document database - you would use an ODM to translate between your objects in code and the document representation of the data (if needed).
Mandango is an example of an ODM for MongoDB.
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Is there an S3 policy for limiting access to only see/access one bucket?
...ng actions in the previous answer (like DeleteObject) and restricting some more (like PutBucketAcl).
The following IAM policy is working for me now:
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"s3:ListBucket",
"s3:GetBucketLocatio...
What are the differences between NP, NP-Complete and NP-Hard?
...ing the answer. "Effective method", of course, has a technical definition. Moreover, "decidable" can also be defined in terms of "computable functions." So, the halting problem is a decision problem ("Does this program halt?" is a yes/no question) but it is undecidable; there is no effective method ...
“ImportError: No module named” when trying to run Python script
...t problem on your hands unrelated to path-to-import and you should provide more info about your problem.
The better (and more permanent) way to solve this is to set your PYTHONPATH, which provides the interpreter with additional directories look in for python packages/modules. Editing or setting th...
Python loop counter in a for loop [duplicate]
...mple code below, is the counter = 0 really required, or is there a better, more Python, way to get access to a loop counter? I saw a few PEPs related to loop counters, but they were either deferred or rejected ( PEP 212 and PEP 281 ).
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Read file line by line using ifstream in C++
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