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ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
...ion Release 2 in my windows 7 64 bit OS and tried to execute JDBC program, then I got the following error:
28 Answers
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Is there a constraint that restricts my generic method to numeric types?
... hard to maintain.
This is not at all the case here: if you want a change then you can just change the template (a single source for all your generation!) and it's done.
In order to use it with your own custom definitions, add a namespace declaration (make sure it's the same one as the one where y...
Passing current scope to an AngularJS Service
...function. Looking into 3 options (1) use a callback on the async function, then call $scope.$apply...this works, but is ugly (2) pass $scope to the async function, then call theScope.$apply()...this also works (3) use a promise...not tried this yet. Why is a promise the best way? Thanks!
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Attempt to set a non-property-list object as an NSUserDefaults
...stion I have. If I wanted to add the personEncodedObject into an array and then put the array into user Data... could i just replace: [archiveArray addObject:personEncodedObject]; with a NSArray and add the addObject:personEncodedObject into that array and then save that in userData? If you follow ...
Installing pip packages to $HOME folder
...
Beware, that if you do this and then try to use conda environments the files installed in .local will always be hit first which can lead to very hard to track down import errors.
– tacaswell
May 11 '15 at 2:48
...
Write lines of text to a file in R
...o add lines to the same file? (The issue being is that you can't have more then one connection to a file, If I am not mistaken) Thanks.
– Tal Galili
Mar 18 '10 at 15:02
8
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PHP function to generate v4 UUID
...ng openssl_random_pseudo_bytes(), makes the permutations on the octets and then uses bin2hex() and vsprintf() to do the final formatting.
function guidv4($data)
{
assert(strlen($data) == 16);
$data[6] = chr(ord($data[6]) & 0x0f | 0x40); // set version to 0100
$data[8] = chr(ord($da...
Unpivot with column name
... fill in relevant values using case expression ( ex: if subject is science then pick value from science column)
remove any null combinations ( if exists, table expression can be fully avoided if there are strictly no null values in base table)
select *
from
(
select name, subject,
case...
What is the difference between .*? and .* regular expressions?
...0100.
Using 1.*1, * is greedy - it will match all the way to the end, and then backtrack until it can match 1, leaving you with 1010000000001.
.*? is non-greedy. * will match nothing, but then will try to match extra characters until it matches 1, eventually matching 101.
All quantifiers have a no...
Reimport a module in python while interactive
...e Python interpreter.
If running Python 3.4 and up, do import importlib, then do importlib.reload(nameOfModule).
Don't forget the caveats of using this method:
When a module is reloaded, its dictionary (containing the module’s global variables) is retained. Redefinitions of names will overri...