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How does `is_base_of` work?
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If they are related
Let's for a moment assume that B is actually a base of D. Then for the call to check, both versions are viable because Host can be converted to D* and B*. It's a user defined conversion sequence as described by 13.3.3.1.2 from Host<B, D> to D* and B*...
'printf' vs. 'cout' in C++
What is the difference between printf() and cout in C++?
16 Answers
16
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return statement vs exit() in main()
... Personally I favor the return statements because I feel it's like reading any other function and the flow control when I'm reading the code is smooth (in my opinion). And even if I want to refactor the main() function, having return seems like a better choice than exit() .
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What is the difference between instanceof and Class.isAssignableFrom(…)?
Which of the following is better?
14 Answers
14
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How can mixed data types (int, float, char, etc) be stored in an array?
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You can make the array elements a discriminated union, aka tagged union.
struct {
enum { is_int, is_float, is_char } type;
union {
int ival;
float fval;
char cval;
} val;
} my_array[10];
The type member is used to hold the choice of which member o...
What does ||= (or-equals) mean in Ruby?
What does the following code mean in Ruby?
23 Answers
23
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Modulo operation with negative numbers
In a C program i was trying the below operations(Just to check the behavior )
12 Answers
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Detect application heap size in Android
How do you programmatically detect the application heap size available to an Android app?
9 Answers
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Ruby: How to turn a hash into HTTP parameters?
... from the gem.
Julien, your self-answer is a good one, and I've shameless borrowed from it, but it doesn't properly escape reserved characters, and there are a few other edge cases where it breaks down.
require "addressable/uri"
uri = Addressable::URI.new
uri.query_values = {:a => "a", :b =>...
Is there any pythonic way to combine two dicts (adding values for keys that appear in both)?
...>> from collections import Counter
>>> A = Counter({'a':1, 'b':2, 'c':3})
>>> B = Counter({'b':3, 'c':4, 'd':5})
>>> A + B
Counter({'c': 7, 'b': 5, 'd': 5, 'a': 1})
Counters are basically a subclass of dict, so you can still do everything else with them you'd norma...