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What is std::string::c_str() lifetime?

...use the strings are not modified while in that scope. (However, we don't know what use_foo() or ~Foo() might be doing with those values; if they copy the strings elsewhere, then they should do a true copy, and not just copy the char pointers.) ...
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Using Caps Lock as Esc in Mac OS X

... Edit: As described in this answer, newer versions of MacOS now have native support for rebinding Caps Lock to Escape. Thus it is no longer necessary to install third-party software to achieve this. Here's my attempt at a comprehensive, visual walk-through answer (with links) of ho...
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How to install MySQLdb (Python data access library to MySQL) on Mac OS X?

...iven that this site is intended to address these sorts of problems, and I know that I'm going to need a reference to the solution in future, I'm going to ask the question, provide my answer and see what else floats to the surface. ...
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Eclipse - no Java (JRE) / (JDK) … no virtual machine

...eo) to re-run on my computer - I have run it before with no problems, but now I keep getting this error: 34 Answers ...
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In Functional Programming, what is a functor?

...ng integers, strings, or Booleans respectively. If the element type is unknown, it is written as a type parameter a, as in T a. Examples include lists (zero or more elements of type a), the Maybe type (zero or one elements of type a), sets of elements of type a, arrays of elements of type a, all k...
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iPhone Simulator suddenly started running very slow

...hone simulator for a number of weeks and it has been running well up until now, but all of a sudden has begun running very slow both when loading content and animations. I have not made any changes to my code since I last tested it successfully. ...
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How to create a multi-tenant database with shared table structures?

.... How many prospective tenants do you expect to target? You may be nowhere near being able to estimate prospective use with authority, but think in terms of orders of magnitude: are you building an application for hundreds of tenants? Thousands? Tens of thousands? More? The large...
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Detect viewport orientation, if orientation is Portrait display alert message advising user of instr

... Support for this is much stronger now. This seems to be a much more robust answer now then the accepted one. – JonK Jun 28 '16 at 21:56 2 ...
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URL-parameters and logic in Django class-based views (TemplateView)

...or higher, as pointed out here: Django’s generic class based views now automatically include a view variable in the context. This variable points at your view object. In your views.py: from django.views.generic.base import TemplateView class Yearly(TemplateView): template_name ...
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How to implement common bash idioms in Python? [closed]

...I just discovered how to combine the best parts of bash and ipython. Up to now this seems more comfortable to me than using subprocess and so on. You can easily copy big parts of existing bash scripts and e.g. add error handling in the python way :) And here is my result: #!/usr/bin/env ipython3 #...