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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....
Common programming mistakes for Clojure developers to avoid [closed]
...raditional Java hexadecimal values via the 0x prefix. You can also use any base between 2 and 36 by using the "base+r+value" notation, such as 2r101010 or 36r16 which are 42 base ten.
Trying to return literals in an anonymous function literal
This works:
user> (defn foo [key val]
{key va...
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...
error opening HPROF file: IOException: Unknown HPROF Version
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Batch file to copy directories recursively
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Safe characters for friendly url [closed]
...od, I discovered today, is a bad choice of character to use for a URL-safe Base64 encoder, because there will be those rare cases where your encoded data may produce two consecutive dots (".."), which is significant in that it refers to the parent directory.
– pohl
...
Generate random numbers following a normal distribution in C/C++
...
Here's a C++ example, based on some of the references. This is quick and dirty, you are better off not re-inventing and using the boost library.
#include "math.h" // for RAND, and rand
double sampleNormal() {
double u = ((double) rand() / (RA...
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...
How do I convert an interval into a number of hours with postgres?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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