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What is a Memory Heap?
...
Presumably you mean heap from a memory allocation point of view, not from a data structure point of view (the term has multiple meanings).
A very simple explanation is that the heap is the portion of memory where dynamically allocated memory resides (i.e. memory ...
How is Python's List Implemented?
...em[0], etc. */
PyObject **ob_item;
/* ob_item contains space for 'allocated' elements. The number
* currently in use is ob_size.
* Invariants:
* 0 <= ob_size <= allocated
* len(list) == ob_size
* ob_item == NULL implies ob_size == allocated == 0
...
Does using “new” on a struct allocate it on the heap or stack?
...hen you create an instance of a class with the new operator, memory gets allocated on the heap. When you create an instance of a struct with the new operator where does the memory get allocated, on the heap or on the stack ?
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Advantages of Antlr (versus say, lex/yacc/bison) [closed]
... Contrast that with antlr - assuming it uses 512 bytes of memory for every token in the file you want to parse. 4 million tokens and you are out of virtual memory on a 32-bit system.
If the file which you wish to parse is large, antlr may run out of memory, so if you just want to parse a configurat...
Why would I make() or new()?
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Go has multiple ways of memory allocation and value initialization:
&T{...}, &someLocalVar, new, make
Allocation can also happen when creating composite literals.
new can be used to allocate values such as integers, &int is illegal:
new(P...
How can I match on an attribute that contains a certain string?
...g with a trick to ensure the comparison is done at the level of a complete token (lest the 'atag' pattern be found as part of another 'tag').
"atag btag" is an odd value for the class attribute, but never the less, try:
//*[starts-with(@class,"atag")]
...
What is ASP.NET Identity's IUserSecurityStampStore interface?
...es the UserManager.UpdateSecurityStampAsync(userId) work for UseOAuthBearerTokens?
– Rikard
May 23 '14 at 7:16
7
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Difference in make_shared and normal shared_ptr in C++
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The difference is that std::make_shared performs one heap-allocation, whereas calling the std::shared_ptr constructor performs two.
Where do the heap-allocations happen?
std::shared_ptr manages two entities:
the control block (stores meta data such as ref-counts, type-erased del...
How to extract a floating number from a string [duplicate]
...at by stepping to it directly:
user_input = "Current Level: 1e100 db"
for token in user_input.split():
try:
# if this succeeds, you have your (first) float
print float(token), "is a float"
except ValueError:
print token, "is something else"
# => Would print ...
#...
The written versions of the logical operators
...by this became less used.
In C++, they became what are known as alternate tokens. You do not need to include anything to use these tokens in a compliant compiler (as such, the C++-ified version of the C header, <ciso646>, is blank). Alternate tokens are just like regular tokens, except for sp...