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How to get maximum value from the Collection (for example ArrayList)?
There is an ArrayList which stores integer values. I need to find the maximum value in this list. E.g. suppose the arrayList stored values are : 10, 20, 30, 40, 50 and the max
value would be 50 .
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LAST_INSERT_ID() MySQL
...G these rows with the last_id_insert generated in the insert.
$element = array(some ids)
foreach ($element as $e){
UPDATE Table2 SET column1 = @last_id_in_table1 WHERE id = $e
}
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open read and close a file in 1 line of code
...pen("/etc/hosts","r") as f: x = f.read().splitlines()
which gives you an array x containing the lines, and can be printed like so:
for line in x: print line
These one-liners are very helpful for maintenance - basically self-documenting.
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How to calculate cumulative normal distribution?
...zero.
If you need the inverse CDF:
>>> norm.ppf(norm.cdf(1.96))
array(1.9599999999999991)
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Easiest way to convert a List to a Set in Java
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Using java 8 you can use stream:
List<Integer> mylist = Arrays.asList(100, 101, 102);
Set<Integer> myset = mylist.stream().collect(Collectors.toSet()));
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LINQ order by null column where order is ascending and nulls should be last
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my decision:
Array = _context.Products.OrderByDescending(p => p.Val ?? float.MinValue)
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Convert string to variable name in JavaScript
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You can access the window object as an associative array and set it that way
window["onlyVideo"] = "TEST";
document.write(onlyVideo);
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Difference between toFixed() and toPrecision()?
...er of significant digits for each product, but if we're iterating over the array of products that could be tricky. Let's use toFixed instead:
document.write("The price of " + products[0].title + " is $" + products[0].price.toFixed(2));
document.write("The price of " + products[1].title + " is $" + ...
How to get the previous URL in JavaScript?
...ing window.
Took me a little while to understand this. So in the history array, document.referrer is not only a URL, it is apparently the referrer window specification as well. At least, that is the best way I can understand it at this time.
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How do I clear all options in a dropdown box?
... Yes, it will fail because the remove() method will rearrange the array. Doing it backwards will guarantee that the element to be removed will exist.
– Fabiano
Jan 26 '16 at 14:54
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