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django test app error - Got an error creating the test database: permission denied to create databas
...sername django does not have permission to create a database, hence the error message.
When you run migrate or syncdb, Django does not try to create the finance database, so you don't get any errors.
You can add the createdb permission to the django user by running the following command in the pos...
Read whole ASCII file into C++ std::string [duplicate]
I need to read a whole file into memory and place it in a C++ std::string .
9 Answers
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Is there a REAL performance difference between INT and VARCHAR primary keys?
Is there a measurable performance difference between using INT vs. VARCHAR as a primary key in MySQL? I'd like to use VARCHAR as the primary key for reference lists (think US States, Country Codes) and a coworker won't budge on the INT AUTO_INCREMENT as a primary key for all tables.
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ES6 class variable alternatives
Currently in ES5 many of us are using the following pattern in frameworks to create classes and class variables, which is comfy:
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(-2147483648> 0) returns true in C++?
-2147483648 is the smallest integer for integer type with 32 bits, but it seems that it will overflow in the if(...) sentence:
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Android accelerometer accuracy (Inertial navigation)
I was looking into implementing an Inertial Navigation System for an Android phone, which I realise is hard given the accelerometer accuracy, and constant fluctuation of readings.
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Is it feasible to do (serious) web development in Lisp? [closed]
...gramming language, especially in such a powerful one as Lisp (be it Scheme or Common Lisp). But is it practical to use it for web development? If so, what should be a good starting point? Where can be found the proper resources (tools, libraries, documentation, best practices, examples, etc.) for a ...
Removing all empty elements from a hash / YAML?
...go about removing all empty elements (empty list items) from a nested Hash or YAML file?
20 Answers
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How do Trigonometric functions work?
...they have always been presented to me as a black box. If you need the Sine or Cosine of something, you hit the sin or cos button on your calculator and you're set. Which is fine.
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Calling async method synchronously
...t this doesn't happen:
Add .ConfigureAwait(false) to your library method or
explicitly execute your async method in a thread pool thread and wait for it to finish:
string code = Task.Run(GenerateCodeAsync).Result;
This does not mean that you should just mindlessly add .ConfigureAwait(false) af...