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Difference between a user and a schema in Oracle?
... or privileges to create objects.
Next, we create some roles to allow read-write and read-only access.
CREATE ROLE schema_rw_role;
CREATE ROLE schema_ro_role;
We want to give our application user read-write access to the schema
objects, so we grant the relevant role.
GRANT schema_rw_r...
Do you need to dispose of objects and set them to null?
...this scope because it would give a different meaning to 'iVal', which is already used in a 'parent or current' scope to denote something else
}
This makes sense if you look at generated MSIL - all the variables used by the function are defined at the start of the function. Take a look at this func...
Should I choose ActivePerl or Strawberry Perl for Windows? [duplicate]
I'm totally new to Perl, but I'd like to try it out. I read about two rival distributions available for Windows platform (I guess there's just Perl on other OSes :).
...
How can I pass arguments to a batch file?
...
Five years later, I'm back reading my comment w/ confusion. Seem to have meant "to create a .bat with two parameters, literally type echo echo %1 %2 > test.bat. The test.bat file will have echo %1 %2 in it (you could've also saved it from a text edi...
Difference between ref and out parameters in .NET [duplicate]
... that's an additional output for the function (eg int.TryParse) that are already using the return value for something.
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Check if an image is loaded (no errors) with jQuery
...ck the image DOM element for the .complete to make sure the image wasn't already loaded before jQuery could register the events.
...
Covariance, Invariance and Contravariance explained in plain English?
Today, I read some articles about Covariance, Contravariance (and Invariance) in Java. I read the English and German Wikipedia article, and some other blog posts and articles from IBM.
...
How to assign from a function which returns more than one value?
...ionReturningTwoValues()[[2]] would be sufficient.)
See the cited r-help thread for more examples.
(2) with If the intent is merely to combine the multiple values subsequently and the return values are named then a simple alternative is to use with :
myfun <- function() list(a = 1, b = 2)
lis...
Creating a daemon in Linux
...fork())
Because PID != SID our process can't take control of a TTY again
Reading the syslog:
Locate your syslog file. Mine is here: /var/log/syslog
Do a: grep firstdaemon /var/log/syslog
The output should be similar to this one:
firstdaemon[3387]: First daemon started.
firstdaemon[3387]: ...
What is the difference between String.slice and String.substring?
...y, and/or looking for short answer scroll to the bottom of the answer, and read the last two lines.if Not in a hurry read the whole thing.let me start by stating the facts:
Syntax:
string.slice(start,end)
string.substr(start,length)
string.substring(start,end)
Note #1: slice()==substring()
What it...