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Java default constructor
...class constructor with no arguments". Uninitialised fields are initialised by other mechanisms also described in this reference. +1 to OrangeDog for providing a good reference.
– Superole
Jan 28 '14 at 8:38
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Why does PHP consider 0 to be equal to a string?
...e', or 'E' and the numeric value fits into integer type limits (as defined by PHP_INT_MAX), the string will be evaluated as an integer. In all other cases it will be evaluated as a float.
In this case the string is 'e' and thus it will be evaluated as a float:
The value is given by the initial...
Find size of an array in Perl
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The size of (1,2,3) is 3, and the indexes are (by default) 0, 1 and 2. So, $#arr will be 2 in this case, not 3.
– Nate C-K
Sep 13 '11 at 18:47
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How can I lock a file using java (if possible)
... the lock of for the JVM, and not suitable for locking the file for access by individual threads within a single JVM.
– Stu Thompson
Sep 25 '08 at 7:00
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The purpose of Model View Projection Matrix
...d in shaders.
So: the composed model view projection matrix is often used by shaders to map from the vertices you loaded for each model to the screen. It's not required, there are lots of ways of achieving the same thing, it's just usual because it allows all possible linear transforms. Because of ...
Grep not as a regular expression
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Escape the $ by putting a \ in front of it.
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Permission denied on accessing host directory in Docker
...Is there any official documentation about this?
– Kirby
Oct 16 '16 at 12:51
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Upstream has it as ...
How to find foreign key dependencies in SQL Server?
...samkitshah: Nobody said it would. The question is tagged sql-server, which by definition is Microsoft technology. Postgres has nothing to do with it.
– Neolisk
Jan 9 '15 at 20:27
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Covariance, Invariance and Contravariance explained in plain English?
...bove.
At heart, these terms describe how the subtype relation is affected by type transformations. That is, if A and B are types, f is a type transformation, and ≤ the subtype relation (i.e. A ≤ B means that A is a subtype of B), we have
f is covariant if A ≤ B implies that f(A) ≤ f(B)
f ...
Adding n hours to a date in Java?
...a.util.Calendar, and java.text.SimpleDateFormat are now legacy, supplanted by the java.time classes built into Java 8 & Java 9. See Tutorial by Oracle.
– Basil Bourque
Mar 25 '18 at 18:48
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