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Postgres unique constraint vs index
... master values (0, 0);
INSERT 0 1
test=# insert into master values (0, 1);
ERROR: duplicate key value violates unique constraint "master_con_id_key"
DETAIL: Key (con_id)=(0) already exists.
test=# insert into master values (1, 0);
ERROR: duplicate key value violates unique constraint "master_uniq...
Make git automatically remove trailing whitespace before committing
... for git to automatically remove trailing whitespace (and other whitespace errors) from all commits as they are applied.
16...
Capistrano error tar: This does not look like a tar archive
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Whenever I have hit this error it was because the branch specified in my deploy/environment.rb file wasn't checked into git. Do an add / commit / git push origin branch_name and that will likely make things work.
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Writing outputs to log file and console
... running the user script like log file name and path, redirect outputs and errors to log file, database connection details, etc ) which redirects all the outputs ( echo messages ) and errors to the log file from the executed script using the following code:
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Find all elements on a page whose element ID contains a certain text using jQuery
I'm trying to find all elements on a page whose element ID contains a certain text. I'll then need to filter the found elements based on whether they are hidden or not. Any help is greatly appreciated.
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Get an object's class name at runtime
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typescript will throw error on this. should do let instance: any = this.constructor; console.log(instance.name);
– Subash
Jul 29 '16 at 6:26
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Managing relationships in Laravel, adhering to the repository pattern
...lowing interface:
interface BaseRepositoryInterface
{
public function errors();
public function all(array $related = null);
public function get($id, array $related = null);
public function getWhere($column, $value, array $related = null);
public function getRecent($limit, ar...
Track all remote git branches as local branches
Tracking a single remote branch as a local branch is straightforward enough.
15 Answers
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Octave-Gnuplot-AquaTerm error: set terminal aqua enhanced title “Figure 1”…unknown terminal type"
I've installed Octave and gnuplot via Homebrew, and downloaded AquaTerm.dmg.
When I try to plot, I get the following message:
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Polymorphism vs Overriding vs Overloading
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