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How to change node.js's console font color?
...\x1b[36m%s\x1b[0m', 'I am cyan'); //cyan
console.log('\x1b[33m%s\x1b[0m', stringToMakeYellow); //yellow
Note %s is where in the string (the second argument) gets injected. \x1b[0m resets the terminal color so it doesn't continue to be the chosen color anymore after this point.
Colors reference
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How to post JSON to PHP with curl
...ng an empty array because PHP is expecting the posted data to be in a Querystring format (key=value&key1=value1).
Try changing your curl request to:
curl -i -X POST -d 'json={"screencast":{"subject":"tools"}}' \
http://localhost:3570/index.php/trainingServer/screencast.json
and see if...
“Items collection must be empty before using ItemsSource.”
...ou caught the error yet? -->
</ItemsControl>
The bug? The extra > after the initial opening <ItemsControl> tag! The < got applied to the built-in Items collection. When the DataContext was later set, instant crashola. So look out for more than just errors surround you...
Docker - how can I copy a file from an image to a host?
...asks about. However, +1 because it also works with files and comes with an extra feature: permission and owner preservation. Great!
– caligari
Nov 30 '17 at 9:06
5
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What does the comma operator , do?
...
I've seen used most in while loops:
string s;
while(read_string(s), s.len() > 5)
{
//do something
}
It will do the operation, then do a test based on a side-effect. The other way would be to do it like this:
string s;
read_string(s);
while(s.len() >...
Best way to get identity of inserted row?
...serted in the SQL code you sent to the database. If triggers go and create extra rows, they won't cause the wrong value to get returned. Hooray
IDENT_CURRENT returns the last ID that was inserted by anyone. If some other app happens to insert another row at an unforunate time, you'll get the ID of ...
How to make a display in a horizontal row
...
Floating them right will have an extra affect: it will swap the order of them so from left to right they will be last to first.
– Matthew James Taylor
May 25 '09 at 5:17
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Using member variable in lambda capture list inside a member function
...
The solution might make an unnecessary extra copy of grid though it probably gets optimized out. Shorter and better is: auto& tmp = grid; etc.
– Tom Swirly
Aug 10 '15 at 17:49
...
Calculate the median of a billion numbers
...AM of some smartphones.
public class Median {
public static void main(String[] args) {
long start = System.currentTimeMillis();
int[] numbers = new int[1_000_000_000];
System.out.println("created array after " + (System.currentTimeMillis() - start) + " ms");
...
Picking a random element from a set
...0% boost in speed, but YMMV. (Also, this compiles without having to add an extra return statement.)
Note that this code (and most other answers) can be applied to any Collection, not just Set. In generic method form:
public static <E> E choice(Collection<? extends E> coll, Random rand)...