grimoire | Database access layer for golang | Database library
kandi X-RAY | grimoire Summary
kandi X-RAY | grimoire Summary
:warning: Grimoire V2 is available as REL and Changeset package. Grimoire is a database access layer inspired by Ecto. It features a flexible query API and built-in validation. It currently supports MySQL, PostgreSQL, and SQLite3 but a custom adapter can be implemented easily using the Adapter interface.
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QUESTION
This may be specific to the SWI Prolog module system.
Suppose we have three Prolog modules (in the SWI-Prolog module system):
robin
(in filerobin.pl
)arthur
(in filearthur.pl
)helper
(in filehelper.pl
).
Predicates robin:robin/0
(i.e. predicate robin_hood/0
in module robin
) and predicate arthur:arthur/0
call predicate helper:helper/2
(which is exported by module helper
).
Predicate helper:helper/2
then should call a predicate toolshed/1
, which is different depending on the caller modules. I would like helper/2
to call the toolshed/1
predicate associated with the predicate that calls helper/2
.
In Java, one would pass an interface with a toolshed()
method to helper()
, so that helper()
can call the interface and end up at the correct implementation.
How do I do it in Prolog?
Example code:
robin.pl
...ANSWER
Answered 2021-Feb-11 at 08:39Looks like I stumbled upon a solution:
The new helper.pl
It has a modified helper/2
: now helper/3
which accepts the module name of the caller as third argument and uses it to qualify the call to toolshed/1
:
(is it possible to find out by which module one is currently being called? without creating a stack trace?)
QUESTION
I am experiencing an issue with wireframe within my 3D scene. For some strange reason, the wireframe is showing as incomplete in certain places. Moving the camera around makes some of the lines appear, and others disappear, instead of just being one complete wireframe. Here are a few pictures and some code. I am using SharpDX. Does anyone know what's going on?
(The following code has been trimmed down signifincantly to show only what I believe to be the relevant bits to this question)
...ANSWER
Answered 2020-Jul-20 at 23:09Nevermind, I figured it out. I have to disable alpha blending. Should have guessed that.
QUESTION
I wasn't able to show documentation for values of enum classes without setting EXTRACT_ALL
. The comments for preserve, truncate and append aren't there. The enum itself is documented. If I enable EXTRACT_ALL
I get a list.
My code is:
...ANSWER
Answered 2020-Jun-01 at 12:19Doxygen does not always pickup an enum, this can be overcome by means of using the \file
command.
Furthermore you document the enum values after its definition, this means you should not use ///
but ///<
So the limited example would looks like:
QUESTION
The main idea is to each member on team1
attack a random enemy on team2
. The damage dealt is based on a spell casted at random from a Grimoire
book.
My Code:
...ANSWER
Answered 2020-Mar-11 at 15:19You can use the Random class to get a random number between 0 and the number of alive mages on the other team, and use that number to attack. Modify your attack function to take a target mage as a parameter and get them to take damage from there.
QUESTION
I'm learning Idris, and in particular I would like to learn how to prove statements.
The stupidest of all exercises is, of course, associativity of the sum of natural numbers, and I'm comfortable with the theory and with what style of proof I shall use (induction on the first argument and rewriting), but I'm stuck because of some possible incompatibility between the Idris version used in tutorials and mine (1.3.2).
This is my code:
...ANSWER
Answered 2019-Aug-20 at 15:51You need to compute
and attack
before introducing new variables, though I'm not exactly sure why :) Here's the full tactic script that works:
QUESTION
I am using C tagged-union style structures to represent AST nodes. They look like this:
...ANSWER
Answered 2017-Apr-27 at 20:47You're compiling with a C++ compiler, not a C compiler. The two handle enums differently.
In C, all enums are visible at the global scope. In C++, they are qualified by the containing type, if any. So you need to prefix the enum values with the struct name:
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