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How can I set a custom date time format in Oracle SQL Developer?
...-MON-RR HH24:MI:SS
As a result, it keeps the default format, without any error.
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Does PHP have threading?
...object and threading in java, those same people will have no doubt seen an error called ConcurrentModificationException - as it sounds an error raised by the java runtime if two threads write the same physical data concurrently. I understand why it exists, but it baffles me that with resources as ch...
how to use javascript Object.defineProperty
...f not true, the property is read only; attempt to write is ignored without error*!
Both descriptors can have these members:
configurable - default false; if not true, the property can't be deleted; attempt to delete is ignored without error*!
enumerable - default false; if true, it will be iter...
No increment operator (++) in Ruby? [duplicate]
... x++ then Ruby expects another operand. This is why you tend to get syntax errors if you try to use ++ at the moment as Ruby takes part of the next statement as the operand. += is implemented as call + on the receiver passing the RHS as a parameter and then assign the value returned by + to the vari...
How to upgrade PostgreSQL from version 9.6 to version 10.1 without losing data?
...cd to the correct location before executing a command, may lead to cryptic error messages.
On Ubuntu (and probably Debian), provided you are using the "official" repo, deb http://apt.postgresql.org/pub/repos/apt/ xenial-pgdg main, and provided you haven't changed the default filesystem paths or run...
Where do I find the current C or C++ standard documents?
...n the standard (less useful - it contains several dangerous and misleading errors).
The C99 and C++03 standards are available in book form from Wiley and the BSI (British Standards Institute):
C++03 Standard on Amazon
C99 Standard on Amazon
Standards committee draft versions (free)
The working...
How to check if a file is empty in Bash?
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Using the tool shellcheck can find spelling errors just fine.
– Yokai
Oct 3 '16 at 3:30
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Rename a class in Xcode: Refactor… is grayed out (disabled). Why?
...ame" in latest xcode and it failed - again!
(this time with the incorrect error: "Unable to determine the language of", one of those error messages where Apple put the wrong text in place)
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How to create a database from shell command?
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I get this error ERROR 1046 (3D000) at line 27: No database selected when I run echo "create database databasename" | mysql -u -u username -p command
– keerthi
Mar 15 '13 at 5:16
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TypeError: ObjectId('') is not JSON serializable
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Most users who receive the "not JSON serializable" error simply need to specify default=str when using json.dumps. For example:
json.dumps(my_obj, default=str)
This will force a conversion to str, preventing the error. Of course then look at the generated output to confirm...