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Depend on a branch or tag using a git URL in a package.json?
....json. If I changed the token or any letter in the repo name or user name, etc. - I'd get an error. So I knew I had the right token and repo name.
I finally realized it's because the name of the dependency I had in my package.json didn't match the name in the package.json of the repo I was trying t...
Difference between Destroy and Delete
...t determines what it should do for dependencies, runs through validations, etc.
When you invoke delete or delete_all on an object, ActiveRecord merely tries to run the DELETE FROM tablename WHERE conditions query against the db, performing no other ActiveRecord-level tasks.
...
“From View Controller” disappears using UIViewControllerContextTransitioning
...r *)viewControllerForKey:(NSString *)key;
So instead of adjusting frames etc of toViewController.view, use the return value of [transitionContext viewForKey:UITransitionContextToViewKey].
If your app needs to support iOS7 and/or Xcode 5, then you can use a simple category method on UIViewControll...
How to align checkboxes and their labels consistently cross-browsers
...
Sometimes vertical-align needs two inline (span, label, input, etc...) elements next to each other to work properly. The following checkboxes are properly vertically centered in IE, Safari, FF, and Chrome, even if the text size is very small or large.
They all float next to each other o...
How to implement the factory method pattern in C++ correctly
...dwich spam();
// Move constructor.
sandwich(sandwich &&);
// etc.
};
Then you can construct objects on the stack:
sandwich mine{sandwich::ham()};
As subobjects of other things:
auto lunch = std::make_pair(sandwich::spam(), apple{});
Or dynamically allocated:
auto ptr = std::ma...
“Insufficient Storage Available” even there is lot of free space in device memory
... things you will only cause issues down the road.. lagg, error
messages, etc. (because you are fooling the OS in thinking you have
given it additional memory which in fact you did.. you only force
closed).
Another good explanation of what is happening is in forum post Low Internal Memory.
T...
What is a semaphore?
...is, a mutex can be used to syncronize access to a counter, file, database, etc.
A sempahore can do the same thing but supports a fixed number of simultaneous callers. For example, I can wrap my database calls in a semaphore(3) so that my multithreaded app will hit the database with at most 3 simult...
What's the difference between hard and soft floating point numbers?
...s in integer registers. You can still compile your code with a -mfpu=vfp, etc but you should use -mfloat-abi=softfp so that if the libc needs a float it is passed in a way the library understands.
The Linux kernel can support emulation of the VFP instructions. Obviously, you are better off to com...
@RequestBody and @ResponseBody annotations in Spring
...rated. Both things will be mapped easily without writing any custom parser etc.
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How to debug Ruby scripts [closed]
... pry 0.12.2 however, there are no navigation commands such as next, break, etc. Some other gems additionally provide this, see for example pry-byedebug.
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