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Refresh image with a new one at the same url
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There is Date.now() for this
– vp_arth
Dec 24 '15 at 6:12
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Why not Math.rand...
What is the difference between application server and web server?
...lt back to its client. The web server sends your query directly to the database server (be patient, I will explain this one in our next nugget) and waits for a response. Once received, the web server formulates the response into an HTML file and sends it to your web browser. This back and forth comm...
PUT vs. POST in REST
...one
Neither is quite right.
Better is to choose between PUT and POST based on idempotence of the action.
PUT implies putting a resource - completely replacing whatever is available at the given URL with a different thing. By definition, a PUT is idempotent. Do it as many times as you like,...
How to “warm-up” Entity Framework? When does it get “cold”?
...won't introduce any lag. But of course this change goes through to the database, so it's not so easy to deal with. Code is more flexible.
Do not use a lot of TPT inheritance (that's a general performance issue in EF). Neither build your inheritance hierarchies too deep nor too wide. Only 2-3 proper...
Generate all permutations of a list without adjacent equal elements
...is fails either for [0, 1, 1] or [0, 0, 1], depending on whether you use 0-based or 1-based indices.
– flornquake
Aug 13 '14 at 13:47
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Simple explanation of MapReduce?
...n a DB software because, with Map\Reduce support you can work with the database without needing to know how the data are stored in a DB to use it, thats what a DB engine is for.
You just need to be able to "tell" the engine what you want by supplying them with either a Map or a Reduce function and ...
Why aren't variable-length arrays part of the C++ standard?
...ed-size. The C++ Dynamic Array proposal is intended to introduce a library based solution, as alternative to a language based VLA. However, it's not going to be part of C++0x, as far as I know.
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How to determine if a number is a prime with regex?
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/^1?$|^(11+?)\1+$/
Apply to numbers after conversion to base 1 (1=1, 2=11, 3=111, ...). Non-primes will match this. If it doesn't match, it is prime.
Explanation here.
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In HTML5, should the main navigation be inside or outside the element?
...o I'm going to lean in the direction of rules.
The examples you cite seem based upon the examples in the spec for the nav element. Remember that the spec keeps getting tweaked and the rules are sometimes convoluted, so I'd venture many people might tend to just do what's given rather than interpret...
Why and How to avoid Event Handler memory leaks?
...sion?
But, there are lots of events and event handlers in your whole code-base. Does it mean, you need to keep detaching event handlers everywhere? The answer is No. If you had to do so, your codebase will be really ugly with verbose.
You can rather follow a simple flow chart to determine if a de...