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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...
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...
@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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TCP vs UDP on video stream
...er used in satellite video broadcast that carry several audio, video, EPG, etc. streams. This is necessary as satellite link is not duplex communication, meaning receiver can't request re-transmission of lost packets.
When you have duplex communication available it is always better to re-transmit ...
How can I use Spring Security without sessions?
...ntainer will append ";jsessionid=..." to requests for images, stylesheets, etc, because Tomcat doesn't like to be stateless, and Spring Security will then block these assets on the first load because "the URL contained a potentially malicious String ';'".
– workerjoe
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