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How does free know how much to free?
...o not have to pass the size to the free function. Why not, and can I use this same technique in my own functions to save me from needing to cart around the extra variable of the array's length?
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What is the max size of localStorage values?
... need to be stringified (stored as JSON-string) before they can be stored, is there a defined limitation regarding the length of the values.
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Why does base64 encoding require padding if the input length is not divisible by 3?
What is the purpose of padding in base64 encoding. The following is the extract from wikipedia:
3 Answers
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How does facebook, gmail send the real time notification?
I have read some posts about this topic and the answers are comet, reverse ajax, http streaming, server push, etc.
5 Answer...
Where is C not a subset of C++? [closed]
I read in a lot of books that C is a subset of C++.
12 Answers
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Difference between char* and const char*?
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char* is a mutable pointer to a mutable character/string.
const char* is a mutable pointer to an immutable character/string. You cannot change the contents of the location(s) this pointer points to. Also, compilers are required to...
Why are these constructs using pre and post-increment undefined behavior?
...s are syntactically valid but you can't predict the behavior when the code is run.
As far as I know, the standard doesn't explicitly say why the concept of undefined behavior exists. In my mind, it's simply because the language designers wanted there to be some leeway in the semantics, instead of i...
Why would iterating over a List be faster than indexing through it?
Reading the Java documentation for the ADT List it says:
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How to count the number of occurrences of an element in a List
I have an ArrayList , a Collection class of Java, as follows:
22 Answers
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When to favor ng-if vs. ng-show/ng-hide?
...t the class set on an element and that ng-if controls whether an element is rendered as part of the DOM.
7 Answers
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