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C malloc() arrays aren't taking up memory even after being accessed

You seem to be assuming that every call to malloc () will ask the operating system to allocate memory. That's very unlikely, especially for small allocations. You should expect allocations from the OS to be very, very rare.

Categories : C

Related to : C malloc() arrays aren't taking up memory even after being accessed
Why is memory being allocated before malloc code has run?
An initial heap is allocated to the process by the OS when the process is loaded; if an allocation cannot be satisfied the heap is extended by requesting more memory from the operating system. See for an explanation for example. What you are seeing is the initial heap allocation to the process, not the total memory allocated by

Categories : C
Misconception of how memory is created using malloc()/calloc()
It appears that you are comparing apples to oranges: When you print a[i] is at ... pointers, you show the addresses of elements inside the array a However, when you shoe the memory layout, you show the values at these addresses, which are themselves pointers, so the whole picture looks confusing. If you print the values at a[i] before assigning calloc results to them, you should get all zeros,

Categories : C
PHP get client URL when be accessed in javascript
you can use javascript code location.hostname. it returns the site url which you see in the browser. Note that this property available in the client side. To access it from server side this info will be available in http header.

Categories : Javascript
Django - allow url only to be accessed from a specific page
You can use the referer header (request.META['HTTP_REFERER'])to determine which page the user came from. Your view can read this header and deny access if it doesn't exist / redirect back to your terms page. For something a bit more reliable, if you're already using session data, you can store a flag in the session upon the user clicking the "agree" button on the terms page. Perhaps that does a f

Categories : Django
Can I use read_stream permission if my App can be accessed from Facebook and as website?
As it says in the article you posted, you will most likely not get read_stream approved at all for your case: This permission is granted to apps building a Facebook-branded client on platforms where Facebook is not already available. For example, Android and iOS apps will not be approved for this permission. In addition, Web, Desktop and TV apps will not be granted this permission.

Categories : Facebook
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