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Elegant way to combine multiple collections of elements?
...ch containing objects of the same type (for example, List<int> foo and List<int> bar ). If these collections were themselves in a collection (e.g., of type List<List<int>> , I could use SelectMany to combine them all into one collection.
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How to add percent sign to NSString
...e for percent sign in NSString format is %%. This is also true for NSLog() and printf() formats.
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convert from Color to brush
... );
now, if you need it in XAML, you COULD make a custom value converter and use that in a binding
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How to add additional fields to form before submit?
Is there a way to use javascript and JQuery to add some additional fields to be sent from a HTTP form using POST?
6 Answers...
How can I catch a “catchable fatal error” on PHP type hinting?
...otes) that is not derived from Exception but Error; it's still a Throwable and can be handled with a normal try-catch block. see https://wiki.php.net/rfc/throwable-interface
E.g.
<?php
class ClassA {
public function method_a (ClassB $b) { echo 'method_a: ', get_class($b), PHP_EOL; }
}
class C...
How to sort Counter by value? - python
... counters, sorting can always be adjusted based on a key function; .sort() and sorted() both take callable that lets you specify a value on which to sort the input sequence; sorted(x, key=x.get, reverse=True) would give you the same sorting as x.most_common(), but only return the keys, for example:
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Convert a positive number to negative in C#
...an 24 '12 at 23:13
Shimmy Weitzhandler
88.9k116116 gold badges372372 silver badges585585 bronze badges
answered Aug 28 '09 at 16:25
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How to obtain the query string from the current URL with JavaScript?
...arams interface can also be used to parse strings in a querystring format, and turn them into a handy URLSearchParams object.
let paramsString = "name=foo&age=1337"
let searchParams = new URLSearchParams(paramsString);
searchParams.has("name") === true; // true
searchParams.get("age") === "133...
Is it possible for a unit test to assert that a method calls sys.exit()
...ystemExit have an attribute code which is set to the proposed exit status, and the context manager returned by assertRaises has the caught exception instance as exception, so checking the exit status is easy:
with self.assertRaises(SystemExit) as cm:
your_method()
self.assertEqual(cm.exception...
How to convert timestamp to datetime in MySQL?
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Just because I've done this and been confused at the output: MySQL stores Unix time in seconds, whereas a lot of other frameworks store it in milliseconds (i.e. Java's timestamp). So just remember to divide by 1000 if you're using this function on data ...