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What is (functional) reactive programming?
...read the Wikipedia article on reactive programming . I've also read the small article on functional reactive programming . The descriptions are quite abstract.
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Check string for palindrome
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@Vijay Tholpadi - It's just really a coding preference more than anything else. Post increment would accomplish same result in this particular example, but I always use pre increment unless there's a specific reason not to.
– dcp
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Using only CSS, show div on hover over
...ibling selector, and is the basis of the suckerfish dropdown menu.
HTML5 allows anchor elements to wrap almost anything, so in that case the div element can be made a child of the anchor. Otherwise the principle is the same - use the :hover pseudo-class to change the display property of another el...
What are the barriers to understanding pointers and what can be done to overcome them? [closed]
...use address on it, and the memory block it references as the actual house. All sorts of operations can thus be easily explained.
I've added some Delphi code down below, and some comments where appropriate. I chose Delphi since my other main programming language, C#, does not exhibit things like mem...
Where is the php.ini file on a Linux/CentOS PC? [duplicate]
I can't find PHP.ini location on my server. I've checked all Stack Overflow answers but I can't find my php.ini location.
5...
What does glLoadIdentity() do in OpenGL?
I'm new to OpenGL and I'm a little overwhelmed with all of the random functions that I have in my code. They work and I know when to use them, but I don't know why I need them or what they actually do.
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Fat models and skinny controllers sounds like creating God models [closed]
...ontrollers approach, esp. the Rails camp. As a result the routers is basically just figuring out what method to call on what controller and all the controller method does is call the corresponding method on the model and then bring up the view. So I've two concerns here which I don't understand:
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How to chain scope queries with OR instead of AND?
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this is really the only pure answer to the OP's question in terms of resources and method. the other answers either (a) require 3rd party apis or (b) require interpolating or or other operators within a text block, neither of which is...
How to fix: “HAX is not working and emulator runs in emulation mode”
...r has to be lower or equal to the memory usage you have set during the installation of HAXM. You can launch its installation again to modify it.
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Is it possible to change a UIButtons background color?
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This can be done programmatically by making a replica:
loginButton = [UIButton buttonWithType:UIButtonTypeCustom];
[loginButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
loginButton.backgroundColor = [UIColor whiteColor];
loginB...