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What are all the uses of an underscore in Scala?
...ame: => Int): () => Int = callByName _
Default initializer
var x: String = _ // unloved syntax may be eliminated
There may be others I have forgotten!
Example showing why foo(_) and foo _ are different:
This example comes from 0__:
trait PlaceholderExample {
def process[A](f: A =...
Regular expression to return text between parenthesis
...ans you will get whatever in 's' :\. It will be good if you check that the string has parenthesis first.
– Omar
May 26 '16 at 1:21
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WiX tricks and tips
...sy way to include the product version in the welcome dialog title by using Strings.wxl for localization. (Credit: saschabeaumont. Added as this great tip is hidden in a comment)
<WixLocalization Culture="en-US" xmlns="http://schemas.microsoft.com/wix/2006/localization">
<String Id="Wel...
recursion versus iteration
...i ++)
sum += i;
return sum;
}
public static void main(String args[]) {
Scanner stdin = new Scanner(System.in);
System.out.print("Please enter a number: ");
int n = stdin.nextInt();
System.out.println("The " + n + "-th triangular number is: " +
...
Display current date and time without punctuation
... or newer):
${parameter@operator} - P operator
The expansion is a string that is the result of expanding the value of parameter as if it were a prompt string.
$ show_time() { local format='\D{%Y%m%d%H%M%S}'; echo "${format@P}"; }
$ show_time
20180724003251
...
Why are dates calculated from January 1st, 1970?
...ongly suggest instead serializing date-time values as unambiguous ISO 8601 strings for data interchange rather than an integer count-since-epoch: YYYY-MM-DDTHH:MM:SS.SSSZ such as 2014-10-14T16:32:41.018Z.
Count Of What Since Epoch
Another issue with count-since-epoch time tracking is the time unit, ...
Url.Action parameters?
...ntroller action passing the two parameters:
public ActionResult GetByList(string name, string contact)
{
...
}
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URL rewriting with PHP
... Instead of hard-coding it, you could just use regex to ignore the string completely. In other words, the only thing that counts is the ID part. Going to picture.php/invalid-text/51 would also redirect to the same location. You could also add a check to see if the string is correct and if no...
Force browser to clear cache
...yet is to keep the filename as-is, but append the version number as a querystring parameter, i.e. script.js?v=1.2. (Or if you're not keeping track of versions, just use the file last-modified time, which is even easier to do). Not sure if that's what the previous commenter meant!
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Easy way to test a URL for 404 in PHP?
...url so you can do additional things like checking the content for specific strings or whatever. In your case, you just care about the 404 state, so you probably do not need to worry about $response.
– Beau Simensen
Jan 3 '09 at 1:42
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