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What is the difference between public, private, and protected?
... in PHP there are another two access modifiers: abstract and final this keyword can be used only for PHP classes but it still access modifiers
– bxN5
Jun 6 '17 at 14:43
1
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How do you use the “WITH” clause in MySQL?
...cursive_table more than
# once in recursive_SELECT, remove the TEMPORARY word.
SET @str = # create and fill T0
CONCAT("CREATE TEMPORARY TABLE ", recursive_table, " ",
create_table_options, " AS ", initial_SELECT);
PREPARE stmt FROM @str;
EXECUTE stmt;
SET @str = # create U
CONC...
How much overhead does SSL impose?
...
Order of magnitude: zero.
In other words, you won't see your throughput cut in half, or anything like it, when you add TLS. Answers to the "duplicate" question focus heavily on application performance, and how that compares to SSL overhead. This question speci...
What is a bank conflict? (Doing Cuda/OpenCL programming)
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In simple words, bank conflict is a case when any memory access pattern fails to distribute IO across banks available in the memory system. The following examples elaborates the concept:-
Let us suppose we have two dimensional 512x512...
When & why to use delegates? [duplicate]
... agree with everything that is said already, just trying to put some other words on it.
A delegate can be seen as a placeholder for a/some method(s).
By defining a delegate, you are saying to the user of your class, "Please feel free to assign, any method that matches this signature, to the delega...
What exactly is Arel in Rails 3.0?
...age is that ARel implements an actual algebra of query operators. In other words, ARel knows about the mathematical rules for constructing and composing queries. If you concatenate two strings, each of which contains a valid SQL query, the result is probably not going to be a valid SQL query. Or, ev...
Is there a typical state machine implementation pattern?
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would be better if this answer also would at least say 2 words about the other two approaches: a "global" method with a big switch-case, and separating states with the State Design Pattern and letting each state handle its transitions itself.
– erikbwork
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Should I always use a parallel stream when possible?
...y. However, the parts themselves may be processed simultaneously. In other words, if you have several CPU cores available, each part can run on its own core independently of the other parts, while processing its own elements sequentially. (NOTE: I don't know, if this is how parallel Java streams wor...
Find XOR of all numbers in a given range
...n the lowest two is special is because (00 ^ 01 ^ 10 ^ 11) == 00. In other words, every 4 values you cycle through gets you back to 0, and so you can cancel out all such cycles, which is why a%4 is significant.
– FatalError
May 20 '12 at 4:45
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Where does Java's String constant pool live, the heap or the stack?
...ontained all literal strings earlier used in your program
(the important word here is used – if a class or method was never
loaded/called, any constants defined in it will not be loaded).
The biggest issue with such string pool in Java 6 was its location –
the PermGen. PermGen has a f...