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What is the proper #include for the function 'sleep()'?

...warning that says "Implicit declaration of function 'sleep' is invalid in C99". But for some reason after I put #include <stdlib.h> , the warning does not go away.. This problem does not stop the program from running fine, but I was just curious on which #include I needed to use! ...
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Sort a Map by values

...sorted_map = new TreeMap<String, Double>(bvc); map.put("A", 99.5); map.put("B", 67.4); map.put("C", 67.4); map.put("D", 67.3); System.out.println("unsorted map: " + map); sorted_map.putAll(map); System.out.println("results: " + sorted_m...
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Copy array by value

... 99 Even though this has already received a ton of upvotes, it deserves another because it properly describes references in JS, which is sort o...
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Are default enum values in C the same for all compilers?

... C99 Standard The N1265 C99 draft says at 6.7.2.2/3 "Enumeration specifiers" An enumerator with = defines its enumeration constant as the value of the constant expression. If the first enumerator has no =, the value of its...
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How can I increment a char?

... In Python 2.x, just use the ord and chr functions: >>> ord('c') 99 >>> ord('c') + 1 100 >>> chr(ord('c') + 1) 'd' >>> Python 3.x makes this more organized and interesting, due to its clear distinction between bytes and unicode. By default, a "string" is unico...
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Http 415 Unsupported Media type error with JSON

... user3443794user3443794 1,97122 gold badges99 silver badges99 bronze badges ...
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SparseArray vs HashMap

...); sparseArray.put(3, "cow"); sparseArray.put(1, "camel"); sparseArray.put(99, "sheep"); sparseArray.put(30, "goat"); sparseArray.put(17, "pig"); Note that the int keys do not need to be in order. This can also be used to change the value at a particular int key. Remove items Use remove (or delete)...
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How to properly assert that an exception gets raised in pytest?

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Is there a “standard” format for command line/shell help text?

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Generate random integers between 0 and 9

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