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Does functional programming replace GoF design patterns?
...nces between Smalltalk and C++ to mean that some patterns can be expressed more easily in one language than the other. (See Iterator for example.)
(The above is a quote from the Introduction to the Design Patterns book, page 4, paragraph 3)
The main features of functional
programming include...
Correct way to use StringBuilder in SQL
... Will that take memory equal to using String like below?
No, it'll cause more memory churn than just the straight concat you quoted. (Until/unless the JVM optimizer sees that the explicit StringBuilder in the code is unnecessary and optimizes it out, if it can.)
If the author of that code wants t...
Speed up the loop operation in R
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Ah, I should have thought through it more carefully. Thanks for showing me the mistake.
– Gregor Thomas
May 25 '16 at 23:07
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Using querySelectorAll to retrieve direct children
...cope, I can't think of another way to handle your situation without adding more custom filter logic (e.g. find myDiv.getElementsByClassName("foo") whose .parentNode === myDiv), and obviously not ideal if you're trying to support one code path that really just wants to take an arbitrary selector stri...
Parsing HTML into NSAttributedText - how to set font?
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Which is better option to use for dividing an integer number by 2?
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How to sum array of numbers in Ruby?
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jorney's array.inject(:+) is more efficient.
– Peter
Oct 9 '09 at 7:09
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java.lang.OutOfMemoryError: GC overhead limit exceeded [duplicate]
...of memory to run the process smoothly. Options that come to mind:
Specify more memory like you mentioned, try something in between like -Xmx512m first
Work with smaller batches of HashMap objects to process at once if possible
If you have a lot of duplicate strings, use String.intern() on them befo...
String concatenation: concat() vs “+” operator
...ion but a+=b will treat the original value of a as if it were null. Furthermore, the concat() method only accepts String values while the + operator will silently convert the argument to a String (using the toString() method for objects). So the concat() method is more strict in what it accepts.
To...
How to list all tags along with the full message in git?
...ing a weird version of git or passing additional arguments to do something more than what this question is asking. But it is good to know that for certain situations the -l is needed.
– still_dreaming_1
Jul 2 '15 at 15:30
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