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Deep copy of a dict in python
...copy
d = { ... }
d2 = copy.deepcopy(d)
Python 2 or 3:
Python 3.2 (r32:88445, Feb 20 2011, 21:30:00) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import copy
>>> my_dict = {'a': [1, 2, 3], 'b': [4, 5, 6]}
>>...
Comment Inheritance for C# (actually any language)
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Neuron
3,54333 gold badges2323 silver badges4040 bronze badges
answered Dec 5 '08 at 5:15
James CurranJames Cur...
Pointers in C: when to use the ampersand and the asterisk?
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answered Jan 19 '10 at 15:46
Dan OlsonDan Olson
20.6k44 gold badges3636 silver badges5252 bronze badges
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Can overridden methods differ in return type?
...de
public Circle build() {
....
}
This is specified in section 8.4.5 of the Java Language Specification:
Return types may vary among methods that override each other if the return types are reference types. The notion of return-type-substitutability supports covariant returns, that is,...
Rails I18n validation deprecation warning
I just updated to rails 4.0.2 and I'm getting this warning:
5 Answers
5
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Laravel Controller Subfolder routing
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answered Apr 28 '17 at 7:41
Ja22Ja22
1,29411 gold badge88 silver badges1212 bronze badges
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How do you get a string to a character array in JavaScript?
... Note: This is not unicode compliant. "I????U".split('') results in the
4 character array ["I", "�", "�", "u"] which can lead to dangerous
bugs. See answers below for safe alternatives.
Just split it by an empty string.
var output = "Hello world!".split('');
console.log(output);
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How do exceptions work (behind the scenes) in c++
...}
catch (const MyException& e)
{
log(3);
}
log(4);
}
I compiled it with g++ -m32 -W -Wall -O3 -save-temps -c, and looked at the generated assembly file.
.file "foo.cpp"
.section .text._ZN11MyExceptionD1Ev,"axG",@progbits,_ZN11MyExceptionD1Ev,comdat
.al...
How to find where gem files are installed
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384
Use gem environment to find out about your gem environment:
RubyGems Environment:
- RUBYGEMS ...
Finding sum of elements in Swift array
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479
This is the easiest/shortest method I can find.
Swift 3 and Swift 4:
let multiples = [...]
l...