Use import MathOptInterface as MOI (#2096)

Author: odow

docs/src/background/duality.md

@@ -1,8 +1,7 @@
 ```@meta
 CurrentModule = MathOptInterface
 DocTestSetup = quote
-    using MathOptInterface
-    const MOI = MathOptInterface
+    import MathOptInterface as MOI
 end
 DocTestFilters = [r"MathOptInterface|MOI"]
 ```

docs/src/background/infeasibility_certificates.md

@@ -1,8 +1,7 @@
 ```@meta
 CurrentModule = MathOptInterface
 DocTestSetup = quote
-    using MathOptInterface
-    const MOI = MathOptInterface
+    import MathOptInterface as MOI
 end
 DocTestFilters = [r"MathOptInterface|MOI"]
 ```

docs/src/background/naming_conventions.md

@@ -1,21 +1,20 @@
 ```@meta
 CurrentModule = MathOptInterface
 DocTestSetup = quote
-    using MathOptInterface
-    const MOI = MathOptInterface
+    import MathOptInterface as MOI
 end
 DocTestFilters = [r"MathOptInterface|MOI"]
 ```
 
 # Naming conventions
 
-MOI follows several conventions for naming functions and structures. These 
+MOI follows several conventions for naming functions and structures. These
 should also be followed by packages extending MOI.
 
 ## Sets
 
-Sets encode the structure of constraints. Their names should follow the 
-following conventions: 
+Sets encode the structure of constraints. Their names should follow the
+following conventions:
 
 * Abstract types in the set hierarchy should begin with `Abstract` and end in
   `Set`, e.g., [`AbstractScalarSet`](@ref), [`AbstractVectorSet`](@ref).
@@ -26,10 +25,10 @@ following conventions:
 * Matrix-valued conic sets should provide two representations: `ConeSquare` and
   `ConeTriangle`, e.g., [`RootDetConeTriangle`](@ref) and
   [`RootDetConeSquare`](@ref). See [Matrix cones](@ref) for more details.
-* Scalar sets should be singular, not plural, e.g., [`Integer`](@ref), not 
+* Scalar sets should be singular, not plural, e.g., [`Integer`](@ref), not
   `Integers`.
-* As much as possible, the names should follow established conventions in the 
-  domain where this set is used: for instance, convex sets should have names 
-  close to those of [CVX](http://web.cvxr.com/cvx/doc/), and 
-  constraint-programming sets should follow 
+* As much as possible, the names should follow established conventions in the
+  domain where this set is used: for instance, convex sets should have names
+  close to those of [CVX](http://web.cvxr.com/cvx/doc/), and
+  constraint-programming sets should follow
   [MiniZinc](https://www.minizinc.org/doc-latest/en/)'s constraints.

docs/src/manual/constraints.md

@@ -1,8 +1,7 @@
 ```@meta
 CurrentModule = MathOptInterface
 DocTestSetup = quote
-    using MathOptInterface
-    const MOI = MathOptInterface
+    import MathOptInterface as MOI
 end
 DocTestFilters = [r"MathOptInterface|MOI"]
 ```

docs/src/manual/models.md

@@ -1,8 +1,7 @@
 ```@meta
 CurrentModule = MathOptInterface
 DocTestSetup = quote
-    using MathOptInterface
-    const MOI = MathOptInterface
+    import MathOptInterface as MOI
 end
 DocTestFilters = [r"MathOptInterface|MOI"]
 ```
@@ -29,8 +28,7 @@ section for more details.
     MOI does not export functions, but for brevity we often omit qualifying
     names with the MOI module. Best practice is to have
     ```julia
-    using MathOptInterface
-    const MOI = MathOptInterface
+    import MathOptInterface as MOI
     ```
     and prefix all MOI methods with `MOI.` in user code. If a name is also
     available in base Julia, we always explicitly use the module prefix, for

docs/src/manual/modification.md

@@ -1,8 +1,7 @@
 ```@meta
 CurrentModule = MathOptInterface
 DocTestSetup = quote
-    using MathOptInterface
-    const MOI = MathOptInterface
+    import MathOptInterface as MOI
 end
 DocTestFilters = [r"MathOptInterface|MOI"]
 ```

docs/src/manual/solutions.md

@@ -1,8 +1,7 @@
 ```@meta
 CurrentModule = MathOptInterface
 DocTestSetup = quote
-    using MathOptInterface
-    const MOI = MathOptInterface
+    import MathOptInterface as MOI
 end
 DocTestFilters = [r"MathOptInterface|MOI"]
 ```

docs/src/manual/standard_form.md

@@ -1,8 +1,7 @@
 ```@meta
 CurrentModule = MathOptInterface
 DocTestSetup = quote
-    using MathOptInterface
-    const MOI = MathOptInterface
+    import MathOptInterface as MOI
 end
 DocTestFilters = [r"MathOptInterface|MOI"]
 ```

docs/src/manual/variables.md

@@ -1,8 +1,7 @@
 ```@meta
 CurrentModule = MathOptInterface
 DocTestSetup = quote
-    using MathOptInterface
-    const MOI = MathOptInterface
+    import MathOptInterface as MOI
 end
 DocTestFilters = [r"MathOptInterface|MOI"]
 ```

docs/src/reference/callbacks.md

@@ -1,8 +1,7 @@
 ```@meta
 CurrentModule = MathOptInterface
 DocTestSetup = quote
-    using MathOptInterface
-    const MOI = MathOptInterface
+    import MathOptInterface as MOI
 end
 DocTestFilters = [r"MathOptInterface|MOI"]
 ```