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Refresh image with a new one at the same url
I am accessing a link on my site that will provide a new image each time it is accessed.
19 Answers
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What is a monad?
Having briefly looked at Haskell recently, what would be a brief, succinct, practical explanation as to what a monad essentially is?
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How do I return the response from an asynchronous call?
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→ For a more general explanation of async behaviour with different examples, please see Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference
→ If you already understand the problem, skip to ...
Unicode equivalents for \w and \b in Java regular expressions?
Many modern regex implementations interpret the \w character class shorthand as "any letter, digit, or connecting punctuation" (usually: underscore). That way, a regex like \w+ matches words like hello , élève , GOÄ_432 or gefräßig .
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How to run a program without an operating system?
How do you run a program all by itself without an operating system running?
Can you create assembly programs that the computer can load and run at startup, e.g. boot the computer from a flash drive and it runs the program that is on the CPU?
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How do I safely pass objects, especially STL objects, to and from a DLL?
...'s no standard C++ ABI (application binary interface, a standard for calling conventions, data packing/alignment, type size, etc.), you will have to jump through a lot of hoops to try and enforce a standard way of dealing with class objects in your program. There's not even a guarantee it'll work af...
Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
What is the most efficient algorithm to achieve the following:
27 Answers
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Logging best practices [closed]
I'd like to get stories on how people are handling tracing and logging in real applications. Here are some questions that might help to explain your answer.
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What is the maximum length of a URL in different browsers?
What is the maximum length of a URL in different browsers? Does it differ among browsers?
18 Answers
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Maximum single-sell profit
Suppose we are given an array of n integers representing stock prices on a single day. We want to find a pair (buyDay, sellDay) , with buyDay ≤ sellDay , such that if we bought the stock on buyDay and sold it on sellDay , we would maximize our profit.
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