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How do I calculate tables size in Oracle
...E is CHOOSE), gathering statistics can cause Oracle to stop using the rule-based optimizer and start using the cost-based optimizer for a set of queries which can be a major performance headache if it is done unexpectedly in production. If your statistics are accurate, you can query USER_TABLES (or...
Case insensitive searching in Oracle
... force a full table scan. In order to avoid this you can create a function-based index.
create index my_index on my_table ( lower(column_1) );
If you're using LIKE then you have to concatenate a % around the string you're searching for.
select * from my_table where lower(column_1) LIKE lower('my...
What does [:] mean?
...nce.
Next:
x[:] = obj
Is a way to set the items (it calls __setitem__) based on obj.
and, I think you can probably guess what:
del x[:]
calls ;-).
You can also pass different slices:
x[1:4]
constructs slice(1,4,None)
x[::-1]
constructs slice(None,None,-1) and so forth. Further readin...
How/when to use ng-click to call a route?
...
@DavidWoods It should work, but only if the base path matches /. If you're serving the app from /app/index.html, then this will not work because the absolute URL is /app/next.html. Obviously also, the server must be set to return your index.html file when hit at /next....
Testing Abstract Classes
....
It is not so uncommon, when writing some library code, to have certain base class that you expect to extend in your application layer. And if you want to make sure that library code is tested, you need means to UT the concrete methods of abstract classes.
Personally, I use PHPUnit, and it has s...
What is an idempotent operation?
...ive programs access to web content, and is usually set in contrast to SOAP-based web services, which just tunnel remote procedure call style services inside HTTP requests and responses.
REST organizes a web application into "resources" (like a Twitter user, or a Flickr image) and then uses the HTTP...
What are the differences between concepts and template constraints?
...compile-time, so that we can restrict the types used as template arguments based on their syntactic properties. In the current proposal for constraints, they are expressed with a subset of propositional calculus using logical connectives like && and ||.
Let's take a look at a constraint in ...
What is the best scripting language to embed in a C# desktop application? [closed]
...er
// This class implements the 'CodeDomProvider' class as its base. All of the current .Net languages (at least Microsoft ones)
// come with thier own implemtation, thus you can allow the user to use the language of thier choice (though i recommend that
// you do...
How do I make a matrix from a list of vectors in R?
...
simplify2array is a base function that is fairly intuitive. However, since R's default is to fill in data by columns first, you will need to transpose the output. (sapply uses simplify2array, as documented in help(sapply).)
> t(simplify2arra...
What does -D_XOPEN_SOURCE do/mean?
... changes depending on what options and #defines you have, for example with basename(3).
See also:
Linux: gcc with -std=c99 complains about not knowing struct timespec
glibc feature test macros
The Compilation Environment - Open Group Base Specification issue 6 (a.k.a. X/Open 6)
POSIX - Wikipedia
...