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Real World Example of the Strategy Pattern

... What about this: You have to encrypt a file. For small files, you can use "in memory" strategy, where the complete file is read and kept in memory ( let's say for files < 1 gb ) For large files, you can use another strategy, where parts of the file are read in memory and...
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C++ Structure Initialization

... I personally like and recommend this style – Dinesh P.R. Jul 17 '12 at 6:22 40 ...
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What is the meaning of the term arena in relation to memory?

... An arena is just a large, contiguous piece of memory that you allocate once and then use to manage memory manually by handing out parts of that memory. For example: char * arena = malloc(HUGE_NUMBER); unsigned int current = 0; void * my_malloc(size_t n) { current += n; return arena +...
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How to retrieve all keys (or values) from a std::map and put them into a vector?

... to read depending on the skill level of your fellow programmers. Additionally, it moves functionality away from the call site. Which can make maintenance a little more difficult. I'm not sure if your goal is to get the keys into a vector or print them to cout so I'm doing both. You may try somet...
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Conditional Variable vs Semaphore

... that a piece of code is atomic, put a lock around it. You could theoretically use a binary semaphore to do this, but that's a special case. Semaphores and condition variables build on top of the mutual exclusion provide by locks and are used for providing synchronized access to shared resources. ...
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Where is array's length property defined?

...uage itself. 10.7. Array Members The members of an array type are all of the following: The public final field length, which contains the number of components of the array. length may be positive or zero. The public method clone, which overrides the method of the same name in clas...
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How many random elements before MD5 produces collisions?

...get a unique filename. Since S3 can't have subdirectories, I need to store all of these images in a single flat folder. 8 A...
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What is the purpose of Rank2Types?

I am not really proficient in Haskell, so this might be a very easy question. 6 Answers ...
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Have a reloadData for a UITableView animate when changing

...the modes I have a different number of sections and cells per section. Ideally, it would do some cool animation when the table grows or shrinks. ...
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NSUserDefaults not cleared after app uninstall on simulator

...mulator 10 still presents this issue. Menu option is now Hardware .. Erase All Content and Settings I submitted a bug report btw share | improve this answer | follow ...