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Do c++11 lambdas capture variables they don't use?

When I use [=] to indicate that I would like all local variables to be captured by value in a lambda, will that result in all local variables in the function being copied, or just all local variables that are used by the lambda ? ...
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Properly escape a double quote in CSV

I have a line like this in my CSV: 4 Answers 4 ...
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Why wasn't PyPy included in standard Python?

I was looking at PyPy and I was just wondering why it hasn't been adopted into the mainline Python distributions. Wouldn't things like JIT compilation and lower memory footprint greatly improve the speeds of all Python code? ...
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An “and” operator for an “if” statement in Bash

I'm trying to create a simple Bash script to check if the website is down and for some reason the "and" operator doesn't work: ...
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emacs/elisp: What is the hash (pound, number sign, octothorp) symbol used for?

...ere is no difference: (eq 'my-add #'my-add) yields t The # can be used in front of a lambda expression indicating to the byte-compiler that the following expression can be byte compiled, see the docs for Anonymous Functions. But there's nothing to compile in the case of a symbol. In general, i...
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intellij - spring is not being recognized (Unmapped Spring configuration)

I am using IntelliJ IDEA and all plugins for Spring are activated, but when I load my Maven project I have the following error: ...
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How do I print the full value of a long string in gdb?

I want to print the full length of a C-string in GDB. By default it's being abbreviated, how do I force GDB to print the whole string? ...
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Reading a string with scanf

I'm a little bit confused about something. I was under the impression that the correct way of reading a C string with scanf() went along the lines of ...
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Error in Swift class: Property not initialized at super.init call

... Quote from The Swift Programming Language, which answers your question: “Swift’s compiler performs four helpful safety-checks to make sure that two-phase initialization is completed without error:” Safety check 1 “A designated initiali...
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Rails new vs create

Why is there a need to define a new method in RESTful controller, follow it up with a create method? 4 Answers ...