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What's the best way to inverse sort in scala?
...ay be done by method sorted with an implicit Ordering, which you may make explicit, and Ordering has a reverse (not the list reverse below)
You can do
list.sorted(theOrdering.reverse)
If the ordering you want to reverse is the implicit ordering, you can get it by implicitly[Ordering[A]] (A the t...
How can I pad an int with leading zeros when using cout
...g namespace std;, but that's bad practice so maybe instead you should prefix the three identifiers in this answer with std::.
– David Grayson
Jul 6 '15 at 17:44
...
PHP cURL custom headers
...
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'X-Apple-Tz: 0',
'X-Apple-Store-Front: 143444,12'
));
http://www.php.net/manual/en/function.curl-setopt.php
share
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im...
Logical operator in a handlebars.js {{#if}} conditional
...Handlebars 1.0.0), and registerBoundHelper can't deal with Handlebars syntax. The workaround is to create a custom view: stackoverflow.com/questions/18005111/…
– Warren Seine
Aug 29 '13 at 14:41
...
When should iteritems() be used instead of items()?
...
In Python 2.x - .items() returned a list of (key, value) pairs. In Python 3.x, .items() is now an itemview object, which behaves different - so it has to be iterated over, or materialised... So, list(dict.items()) is required for what wa...
How to join two JavaScript Objects, without using JQUERY [duplicate]
...j2[key]);
3 - Object.assign():
(Browser compatibility: Chrome: 45, Firefox (Gecko): 34, Internet Explorer: No support, Edge: (Yes), Opera: 32, Safari: 9)
const result = Object.assign({}, obj1, obj2);
4 - Spread Operator:
Standardised from ECMAScript 2015 (6th Edition, ECMA-262):
Defined i...
Writing a pandas DataFrame to CSV file
...
I would add index=False to drop the index.
– Medhat
Jul 3 '19 at 20:48
16
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What's the algorithm to calculate aspect ratio?
... numbers. So the GCD for 6 and 10 is 2, the GCD for 44 and 99 is 11.
For example, a 1024x768 monitor has a GCD of 256. When you divide both values by that you get 4x3 or 4:3.
A (recursive) GCD algorithm:
function gcd (a,b):
if b == 0:
return a
return gcd (b, a mod b)
In C:
stat...
Why can't variables be declared in a switch statement?
...stency in the code. In the old days, you might have automatically got an "extra" stack frame, but now that should not be the case for any decent optimizing compiler.
– Tall Jeff
Sep 18 '08 at 14:37
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Is 'float a = 3.0;' a correct statement?
...rios.
For performance reasons:
Specifically, consider:
float foo(float x) { return x * 0.42; }
Here the compiler will emit a conversion (that you will pay at runtime) for each returned value. To avoid it you should declare:
float foo(float x) { return x * 0.42f; } // OK, no conversion require...