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What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
...or (?:), and
the comma operator (,)
is Unspecified
For example
int Hello()
{
return printf("Hello"); /* printf() returns the number of
characters successfully printed by it
*/
}
int World()
{
return prin...
What does “%.*s” mean in printf?
... precision = 8;
int biggerPrecision = 16;
const char *greetings = "Hello world";
printf("|%.8s|\n", greetings);
printf("|%.*s|\n", precision , greetings);
printf("|%16s|\n", greetings);
printf("|%*s|\n", biggerPrecision , greetings);
return 0;
}
we get the output:
|H...
Android and in TextView
...l ellipsize from the last characters. str.replace(" ", "\u00A0") yields, "Hello wor..." instead of "Hello..."
– Seop Yoon
Feb 23 '18 at 2:27
...
Command substitution: backticks or dollar sign / paren enclosed? [duplicate]
...ntion is that you should escape backquote to nest commands:
$ echo $(echo hello $(echo word))
hello word
$ echo `echo hello \`echo word\``
hello word
share
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improve this answer
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...
How do I add a delay in a JavaScript loop?
...n() { // call a 3s setTimeout when the loop is called
console.log('hello'); // your code here
i++; // increment the counter
if (i < 10) { // if the counter < 10, call the loop function
myLoop(); // .. again which will tri...
Start thread with member function
...t;iostream>
class bar {
public:
void foo() {
std::cout << "hello from member function" << std::endl;
}
};
int main()
{
std::thread t(&bar::foo, bar());
t.join();
}
EDIT:
Accounting your edit, you have to do it like this:
std::thread spawn() {
return std::thr...
How to declare a global variable in JavaScript?
...e is a live example for you: http://jsfiddle.net/fxCE9/
var myVariable = 'Hello';
alert('value: ' + myVariable);
myFunction1();
alert('value: ' + myVariable);
myFunction2();
alert('value: ' + myVariable);
function myFunction1() {
myVariable = 'Hello 1';
}
function myFunction2() {
myVaria...
Run R script from command line
... add an appropriate #! to the top of the script
#!/usr/bin/env Rscript
sayHello <- function(){
print('hello')
}
sayHello()
I will also note that if you're running on a *unix system there is the useful littler package which provides easy command line piping to R. It may be necessary to use ...
Best Practices: working with long, multiline strings in PHP?
...g. So I might do something like this with your original example:
$text = 'Hello ' . $vars->name . ','
. "\r\n\r\n"
. 'The second line starts two lines below.'
. "\r\n\r\n"
. 'I also don\'t want any spaces before the new line,'
. ' so it\'s butted up against the left...
Are JavaScript strings immutable? Do I need a “string builder” in JavaScript?
...s to the same string, modifying one doesn't affect the other
let a = b = "hello";
a = a + " world";
// b is not affected
However, I've always heard what Ash mentioned in his answer (that using Array.join is faster for concatenation) so I wanted to test out the different methods of concatenating s...