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Converting bool to text in C++
...< std::boolalpha << f << std::endl;
UPDATE:
If you want more than 4 lines of code without any console output, please go to cppreference.com's page talking about std::boolalpha and std::noboolalpha which shows you the console output and explains more about the API.
Additionally u...
Regex for numbers only
...ors.
Regex regex = new Regex(@"^\d$");
Use "^\d+$" if you need to match more than one digit.
Note that "\d" will match [0-9] and other digit characters like the Eastern Arabic numerals ٠١٢٣٤٥٦٧٨٩. Use "^[0-9]+$" to restrict matches to just the Arabic numerals 0 - 9.
If you need t...
Should I embed images as data/base64 in CSS or HTML
...S sprites) when IE compatibility doesn't matter, and saving the request is more important than cacheability.
It has a number of notable downsides:
Doesn't work at all in IE6 and 7.
Works for resources only up to 32k in size in IE8. This is the limit that applies after base64 encoding. In other...
How many parameters are too many? [closed]
... A good rule-of-thumb is the number of CPU registers, because anymore and the compiler will be forced to allocate them on the stack.
– Michaelangel007
Mar 31 '16 at 14:10
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Visualizing branch topology in Git
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Interface vs Abstract Class (general OO)
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http://www.gotw.ca/publications/mill18.htm
http://en.wikibooks.org/wiki/More_C%2B%2B_Idioms/Non-Virtual_Interface
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Sending a message to nil in Objective-C
... anything except keep the compiler happy. Yes, you get the overhead of one more method call, but you save programmer time, which is a far more expensive resource than CPU time. In addition, you're eliminating more code and more conditional complexity from your application.
Clarifying for downvoters...
Common programming mistakes for Clojure developers to avoid [closed]
...s)) i
(recur (dec i) n times))))
When in fact loop would have been more concise and idiomatic for this particular function:
; Elapsed time: 387 msecs
(defn p3 [] {:post [(= % 6857)]}
(loop [i 775147 n 600851475143 times 3]
(if (and (divides? i n) (fast-prime? i times)) i
(recur ...
Pretty git branch graphs
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Update: This answer has gotten far more attention than it deserves. It was originally posted because I think the graphs look nice and they could be drawn-over in Illustrator for a publication– and there was no better solution. But there now exists much...
Flatten list of lists [duplicate]
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Sorry, I meant more readable/intuitive. Since the OP is having trouble disambiguating between what lists are (sequences of data) and how lists are represented in code (with square brackets), I highly doubt a double list comprehension will m...