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What are the advantages of NumPy over regular Python lists?
...ion cells -- neither approach would fit in a 32-bit architecture, but with 64-bit builds NumPy would get away with 4 GB or so, Python alone would need at least about 12 GB (lots of pointers which double in size) -- a much costlier piece of hardware!
The difference is mostly due to "indirectness" --...
What is the difference between char s[] and char *s?
...modify the contents of the array, the behavior is undefined.
GCC 4.8 x86-64 ELF implementation
Program:
#include <stdio.h>
int main(void) {
char *s = "abc";
printf("%s\n", s);
return 0;
}
Compile and decompile:
gcc -ggdb -std=c99 -c main.c
objdump -Sr main.o
Output contai...
Position of least significant bit that is set
...significant bit is position 1 and the most significant position e.g. 32 or 64. The functions ffsll() and ffsl() do the same but take arguments of possibly different size.
Return Value
These functions return the position of the first bit set, or 0 if no bits are set in i.
Conforming to
4.3BSD, POSIX....
What's the difference between text/xml vs application/xml for webservice response
...eadable vs readable. We use files that are mostly readable but do have base64 encoded nodes, etc..
– Joe Phillips
Feb 21 '13 at 16:11
...
List of all index & index columns in SQL Server DB
...ers, and the XML type
-- add select where indid<255 and si.status&64=0 (to omit the text/image index and autostats)
If your names include spaces, add square brackets around them in the creation scripts.
When the last Key column is all nulls, you know that none are missing.
Filtering out...
Accessing an SQLite Database in Swift
...ile sqlite3_step(statement) == SQLITE_ROW {
let id = sqlite3_column_int64(statement, 0)
print("id = \(id); ", terminator: "")
if let cString = sqlite3_column_text(statement, 1) {
let name = String(cString: cString)
print("name = \(name)")
} else {
print("name...
Entity Framework DateTime and UTC
... }
/// <inheritdoc />
public override long GetInt64(int ordinal)
{
return source.GetInt64(ordinal);
}
/// <inheritdoc />
public override string GetName(int ordinal)
{
return source.GetName(ordinal);
...
Generate random numbers using C++11 random library
...ndl;
//mt19937 dist (1234); //for 32 bit systems
mt19937_64 dist (1234); //for 64 bit systems
for (int i = 0; i<10; ++i)
cout << dist() << ' ';
}
void random_seed_mt19937_2()
{
space();
cout << "mersenne twister sp...
Is it possible to make a type only movable and not copyable?
...bject byte-by-byte, not following pointers, e.g. if you have (&usize, u64), it is 16 bytes on a 64-bit computer, and a shallow copy would be taking those 16 bytes and replicating their value in some other 16-byte chunk of memory, without touching the usize at the other end of the &. That is,...
What is exactly the base pointer and stack pointer? To what do they point?
...here they are, only their value is sent to the RAM from the CPU. In the amd64 mode, this gets a bit more complex, but leave that to another question.
– wigy
Jan 20 '17 at 10:42
...