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How can I programmatically determine if my app is running in the iphone simulator?
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The relevant definition is TARGET_OS_SIMULATOR, which is defined in /usr/include/TargetConditionals.h within the iOS framework. On earlier versions of the toolchain, you had to write:
#include "TargetConditionals.h"
but this is no longer necessary on the current (Xcode 6/iOS8) toolchain.
So, f...
How to do scanf for single char in C [duplicate]
...eft in the input stream, what if you need to read more inputs? Consider:
#include <stdio.h>
int main(void)
{
char ch1, ch2;
scanf("%c", &ch1); /* Leaves the newline in the input */
scanf(" %c", &ch2); /* The leading whitespace ensures it's the
pre...
How to convert a data frame column to numeric type?
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How do I get the current absolute URL in Ruby on Rails?
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@giladbu fullpath does NOT include the protocol/domain/port! It’s not an absolute URL!
– Alan H.
Aug 1 '11 at 21:36
37
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How do you attach and detach from Docker's process?
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What is the canonical way to check for errors using the CUDA runtime API?
...time API in device kernels, as well as after any device kernel launches:
#include <assert.h>
#define cdpErrchk(ans) { cdpAssert((ans), __FILE__, __LINE__); }
__device__ void cdpAssert(cudaError_t code, const char *file, int line, bool abort=true)
{
if (code != cudaSuccess)
{
print...
Adding git branch on the Bash command prompt
...er: use __git_ps1
Git provides a shell script called git-prompt.sh, which includes a function __git_ps1 that
prints text to add to bash PS1 prompt (includes branch name)
Its most basic usage is:
$ __git_ps1
(master)
It also takes an optional format string:
$ __git_ps1 'git:[%s]'
git:[mast...
CMake: Print out all accessible variables in a script
...I'm talking about my variables that I defined, or the variables defined by included scripts.
4 Answers
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OO Design in Rails: Where to put stuff
...use modules (usually stashed in lib) that hold groups of methods, and then include the modules into the appropriate classes. This helps in cases where you have categories of functionality that you wish to reuse in multiple classes, but where the functionality is still notionally attached to the clas...
How to forward declare a C++ template class?
...tates the default arguments, but any time you reference the class you must include all of its arguments until the definition is introduced.
eg. Let's use std::vector without including it (the second argument of std::vector is defined with a default):
namespace std
{
template<typename, typenam...