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Why doesn't 'ref' and 'out' support polymorphism?
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UPDATE: I used this answer as the basis for this blog entry:
Why do ref and out parameters not allow type variation?
See the blog page for more commentary on this issue. Thanks for the great question.
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Let's suppose you have classes Animal, ...
Any good boolean expression simplifiers out there? [closed]
... IF conditions that were way too complex and long and I'm certain they can be simplified. My guess is that those conditions grew so much because of later modifications.
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How to print instances of a class using print()?
I am learning the ropes in Python. When I try to print an object of class Foobar using the print() function, I get an output like this:
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Comparing two dictionaries and checking how many (key, value) pairs are equal
I have two dictionaries, but for simplification, I will take these two:
26 Answers
26
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Is there a function to make a copy of a PHP array to another?
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In PHP arrays are assigned by copy, while objects are assigned by reference. This means that:
$a = array();
$b = $a;
$b['foo'] = 42;
var_dump($a);
Will yield:
array(0) {
}
Whereas:
$a = new StdClass();
$b = $a;
$b->foo = 42;
var_dump($a);
Y...
Easiest way to toggle 2 classes in jQuery
If I have class .A and class .B and want to switch in between on button click, what's a nice solution for that in jQuery? I still don't understand how toggleClass() works.
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Saving utf-8 texts in json.dumps as UTF8, not as \u escape sequence
...י צקלה", ensure_ascii=False).encode('utf8')
>>> json_string
b'"\xd7\x91\xd7\xa8\xd7\x99 \xd7\xa6\xd7\xa7\xd7\x9c\xd7\x94"'
>>> print(json_string.decode())
"ברי צקלה"
If you are writing to a file, just use json.dump() and leave it to the file object to encode:
with op...
30条爆笑的程序员梗 PHP是最好的语言 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...要说服他们，PHP语言是最好的语言。
4.睡觉
我是一个苦b的程序员，今晚加班到快通宵了，困得快睁不开眼了，女上司很关心，问我要不要吃宵夜。
我没好气地说，宵夜就算了，能让我睡一觉就行了。
女上司红着脸说了句讨...
What is the most effective way for float and double comparison?
What would be the most efficient way to compare two double or two float values?
31 Answers
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What are the differences between double-dot “..” and triple-dot “…” in Git commit ranges?
... it's in the man git-rev-parse documentation:
To exclude commits reachable from a commit, a prefix ^ notation is used. E.g. ^r1 r2 means commits reachable from r2 but exclude the ones reachable from r1.
This set operation appears so often
that there is a shorthand for it. When
you have ...