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List all tables in postgresql information_schema
...et a listing of every table being managed by Postgres for a particular database.
You can also add a where table_schema = 'information_schema' to see just the tables in the information schema.
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Rails: How can I set default values in ActiveRecord?
....0.3 I get the following warning in the console:
DEPRECATION WARNING: Base#after_initialize has been deprecated, please use Base.after_initialize :method instead. (called from /Users/me/myapp/app/models/my_model:15)
Therefore I'd say write an after_initialize callback, which lets you default ...
Removing fields from struct or hiding them in JSON Response
...eople seem to miss that the OP asked for fields to be dynamically selected based on the caller-provided list of fields. You can't do this with the statically-defined json struct tag.
If what you want is to always skip a field to json-encode, then of course use json:"-" to ignore the field (also not...
Which Eclipse files belong under version control?
...Some projects, like those using Maven, like to generate the .project files based on POMs.
That said, other than that - .metadata should NOT be in source control. Your project will have to make a determination about whether projectdir/.settings does, based on how you plan to manage standards and suc...
How can I get nth element from a list?
... list), lists may in fact not be the proper data structure. For O(1) index-based access there are more efficient alternatives, such as arrays or vectors.
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Java equivalent of C#'s verbatim strings with @
...esn't have verbatim string literals.
If you want a Java-like (and Java-VM-based) language that does, however, you might want to look at Groovy which has various forms of string literal.
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Does Git publicly expose my e-mail address?
...b can remember even PR commits on a deleted branch that were merged sing rebase (and so, do not expose the email/name anywhere in the repo except on the PR web page). If the PR was merged, I don't know any way to reverse the commits (if it is still open you can rebase and force push).
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Understanding the Gemfile.lock file
... a source other than the main Rubygems index (e.g., git dependencies, path-based, dependencies) have a ! which means they are "pinned" to that source2 (although one must sometimes look in the Gemfile to determine in).
RUBY VERSION (optional)
The Ruby version specified in the Gemfile, when this Gem...
Check if OneToOneField is None in Django
...n < 3.2, hasattr will swallow all exceptions that happen during the database lookup, and not just DoesNotExist. This is probably broken, and not what you want.
– Pi Delport
Mar 22 '13 at 12:45
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Mysql: Select rows from a table that are not in another
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If you have 300 columns, you should redesign your database.
– Iharob Al Asimi
Jun 1 '16 at 13:50
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