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Why is reading lines from stdin much slower in C++ than Python?
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tl;dr: Because of different default settings in C++ requiring more system calls.
By default, cin is synchronized with stdio, which causes it to avoid any input buffering. If you add this to the top of your main, you should see much better performance:
std::ios_base::sync_with_stdio(fal...
PEP 8, why no spaces around '=' in keyword argument or a default parameter value?
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i'd say it's not really more readable than kw1 = kw1, kw2 = kw2 ;) but maybe that was what Guido and Barry thought.
– soulcheck
Jan 13 '12 at 16:17
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How to implement a rule engine?
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Where can I read more about your answer to learn the classes/objects/etc. you have in your in your code? It is mostly expression trees?
– Blankman
Jul 5 '11 at 0:15
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Benefits of prototypal inheritance over classical?
...People from languages like Java, which has classical inheritance, get even more confused because although constructors look like classes they don't behave like classes. As Douglas Crockford stated:
This indirection was intended to make the language seem more familiar to classically trained progr...
List comprehension vs map
...map() over list comprehension or vice versa? Is either of them generally more efficient or considered generally more pythonic than the other?
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How to extract numbers from a string in Python?
...tter than the regex example because you don't need another module and it's more readable because you don't need to parse (and learn) the regex mini-language.
This will not recognize floats, negative integers, or integers in hexadecimal format. If you can't accept these limitations, jmnas's answer b...
Optimal number of threads per core
...et you the best performance. However that very likely not the case. Adding more threads usually helps, but after some point, they cause some performance degradation.
Not long ago, I was doing performance testing on a 2 quad-core machine running an ASP.NET application on Mono under a pretty decent l...
Why is the C++ STL is so heavily based on templates? (and not on *interfaces*)
...y, OOP just didn't seem all that important. Not when we can write simpler, more concise and more efficient code by using techniques available through templates and generic programming.
OOP is not the holy grail. It's a cute idea, and it was quite an improvement over procedural languages back in the...
What's the best UI for entering date of birth? [closed]
...he problem with most datepickers is that it's painfull to go back 30/40/or more years.
– UnkwnTech
Dec 4 '08 at 10:36
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What is the difference between DAO and Repository patterns?
...does seem common to see implementations called a Repository that is really more of a DAO, and hence I think there is some confusion about the difference between them.
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