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File I/O in Every Programming Language [closed]
... to reopen the file before each operation. You can write the whole code inside one with block.
with open('fileio.txt', 'w+') as f:
f.write('hello')
f.write('\nworld')
s = f.readlines()[1]
print(s)
I used three with blocks to emphsize the difference between the three operations:
write ...
What would cause an algorithm to have O(log n) complexity?
...t a log term to show up in big-O notation. Here are a few:
Repeatedly dividing by a constant
Take any number n; say, 16. How many times can you divide n by two before you get a number less than or equal to one? For 16, we have that
16 / 2 = 8
8 / 2 = 4
4 / 2 = 2
2 / 2 = 1
Notice that this...
Any reason why scala does not explicitly support dependent types?
...
Syntactic convenience aside, the combination of singleton types, path-dependent types and implicit values means that Scala has surprisingly good support for dependent typing, as I've tried to demonstrate in shapeless.
Scala's intrinsic support for ...
How to sort my paws?
...y set a record for the longest non-spam stackoverflow answer ever!)
As a side note, I'm using the full dataset that Ivo provided a link to in his original question. It's a series of rar files (one-per-dog) each containing several different experiment runs stored as ascii arrays. Rather than try to...
In what order are Panels the most efficient in terms of render time and performance?
...l to accommodate stretching using alignments (or Auto in the case of the Grid) and then the number of children which are stretched or auto-sized. The performance of the Arrange pass is affected by the complexity of the interaction between layout location of different children and then of course the...
RESTful Authentication
...r, which will persist (there is no LogOut-like feature here), some server-side additional CPU consumption, and the fact that the user-name and password are transmitted (over HTTPS) into the Server (it should be more secure to let the password stay only on the client side, during keyboard entry, and ...
Scala: Abstract types vs generics
...uld argue that this distinction is fairly arbitrary.
The Scala Way
We decided to have the same construction principles for all three sorts of members.
So you can have abstract fields as well as value parameters.
You can pass methods (or "functions") as parameters, or you can abstract over them.
Yo...
Why does struct alignment depend on whether a field type is primitive or user-defined?
...
I think this is a bug. You are seeing the side-effect of automatic layout, it likes to align non-trivial fields to an address that's a multiple of 8 bytes in 64-bit mode. It occurs even when you explicitly apply the [StructLayout(LayoutKind.Sequential)] attribute. T...
Why is a round-trip conversion via a string not safe for a double?
...ber is pretty simple -- it just calls _ecvt, which is in the C runtime:
void DoubleToNumber(double value, int precision, NUMBER* number)
{
WRAPPER_CONTRACT
_ASSERTE(number != NULL);
number->precision = precision;
if (((FPDOUBLE*)&value)->exp == 0x7FF) {
number->...
C++实现一款简单完整的聊天室服务器+客户端 - C/C++ - 清泛网 - 专注C/C++及内核技术
...
bool PutClient(int sock,const struct sockaddr_in &clientAddr);
void RemoveClient(int sock);
bool GetAddrBySocket(int sock,struct sockaddr_in *addr);
bool PutName(int sock,const char *name, int namelen);
bool GetName(int sock, char *name, int namelen);
int GetAllSocket(int* sock...