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C: differences between char pointer and array [duplicate]
...sion is actually just a shortcut for array instantiation. So the array is allocated in the stack, and then loaded with the string's data.
– Walt W
Aug 26 '09 at 17:42
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Are HTTP headers case-sensitive?
...of HTTP, methods (verbs) are case sensitive:
5.1.1 Method
The Method token indicates the
method to be performed on the
resource identified by the
Request-URI. The method is
case-sensitive.
Method = "OPTIONS" ; Section 9.2
| "GET" ...
Append value to empty vector in R?
... avoided".
As BrodieG mentioned in the comments: it is much better to pre-allocate a vector of the desired length, then set the element values in the loop.
Here are several ways to append values to a vector. All of them are discouraged.
Appending to a vector in a loop
# one way
for (i in 1:le...
What is exactly the base pointer and stack pointer? To what do they point?
... ; Create new frame pointer pointing to current stack top
sub esp, 20 ; allocate 20 bytes worth of locals on stack.
Then later in the function you may have code like (presuming both local variables are 4 bytes)
mov [ebp-4], eax ; Store eax in first local
mov ebx, [ebp - 8] ; Load ebx from ...
How would you go about parsing Markdown? [closed]
...
Flex is really only half the parser; once you have tokenized the input, you need to determine what the tokens mean. This is what a parser generator is for. There are lots of them. ("Parser combinator", "recursive-descent" and "LALR(1)" are key words to google for.)
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How do HTML parses work if they're not using regexp?
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Usually by using a tokeniser. The draft HTML5 specification has an extensive algorithm for handling "real world HTML".
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How to get the size of a string in Python?
...rint(len('please anwser my question'))
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B. To get memory size in bytes allocated to store str object, you can use sys.getsizeof() function
>>> from sys import getsizeof
>>> print(getsizeof('please anwser my question'))
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Python 2:
It gets complicated for Python 2.
A. The...
The difference between Classes, Objects, and Instances
...cribes the object (instance) word.
When a class is declared, no memory is allocated so class is just a template.
When the object of the class is declared, memory is allocated.
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Inline functions vs Preprocessor macros
...values as in the case of functions.
Inline functions can be overloaded
The tokens passed to macros can be concatenated using operator ## called Token-Pasting operator .
Macros are generally used for code reuse where as inline functions are used to eliminate the time overhead (excess time) during fun...
std::string formatting like sprintf
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Even better, use asprintf, which allocates a new string with enough space to hold the result. Then copy that to an std::string if you like, and remember to free the original. Also, it's possible to put this in a macro so that any good compiler will help vali...