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Define static method in source-file with declaration in header-file in C++
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231
Remove static keyword in method definition. Keep it just in your class definition.
static keyw...
How can you represent inheritance in a database?
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443
@Bill Karwin describes three inheritance models in his SQL Antipatterns book, when proposing sol...
Having links relative to root?
...t was necessary for to use a specific base, for this I'll simply cite the W3's example:
For example, given the following BASE declaration and A declaration:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<HTML>
<HEAD>
<TIT...
List files with certain extensions with ls and grep
I just want to get the files from the current dir and only output .mp4 .mp3 .exe files nothing else.
So I thought I could just do this:
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How do I immediately execute an anonymous function in PHP?
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edited May 23 '17 at 12:25
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111 silver badge
answered Aug 25 '10 at 17:35
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How to create index on JSON field in Postgres?
In PostgreSQL 9.3 Beta 2 (?), how do I create an index on a JSON field? I tried it using the -> operator used for hstore but got the following error:
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How can i get the session object if i have the entity-manager
...() for new applications.
So with Hibernate as JPA 2.0 implementation (see 3.15. Native Hibernate API), you would do:
Session session = entityManager.unwrap(Session.class);
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Select rows of a matrix that meet a condition
...can define a column by name:
m[m[, "three"] == 11,]
Or by number:
m[m[,3] == 11,]
Note that if only one row matches, the result is an integer vector, not a matrix.
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Using -performSelector: vs. just calling the method
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bbum
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answered Sep 29 '09 at 15:09
ennuikillerennui...
How do I iterate over a range of numbers defined by variables in Bash?
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1838
for i in $(seq 1 $END); do echo $i; done
edit: I prefer seq over the other methods because I c...