improve cartesian mesh constructors

Author: maltezfaria

src/Interpolation/tensorlaginterp.jl

@@ -136,7 +136,7 @@ function cheb1nodes(n::NTuple{N},lc,uc) where {N}
     iter = cheb1nodes_iter(n,lc,uc)
     return map(x->SVector{N,Float64}(x),iter)
 end
-function cheb1nodes(n::NTuple{N},rec::AbstractHyperRectangle{N}) where {N} 
+function cheb1nodes(n::NTuple{N},rec::AbstractHyperRectangle{N}) where {N}
     cheb1nodes(n,low_corner(rec),high_corner(rec))
 end
 function cheb1nodes(n::Integer,a::Number,b::Number)
@@ -182,7 +182,7 @@ function cheb2nodes(n::NTuple{N},lc,uc) where {N}
     iter = cheb2nodes_iter(n,lc,uc)
     return map(x->SVector{N,Float64}(x),iter)
 end
-function cheb2nodes(n::NTuple{N},rec::AbstractHyperRectangle{N}) where {N} 
+function cheb2nodes(n::NTuple{N},rec::AbstractHyperRectangle{N}) where {N}
     cheb2nodes(n,low_corner(rec),high_corner(rec))
 end
 function cheb2nodes(n::Integer,a::Number,b::Number)

src/Mesh/cartesianmesh.jl

@@ -19,9 +19,12 @@ Base.keys(m::UniformCartesianMesh{N,T}) where {N,T} = (HyperRectangle{N,T},)
 Base.step(m::UniformCartesianMesh) = step.(grids(m))
 
 """
-    UniformCartesianMesh(;domain::HyperRectangle,sz::NTuple)
+    UniformCartesianMesh(domain::HyperRectangle,sz::NTuple)
+    UniformCartesianMesh(domain::HyperRectangle;step::NTuple)
 
-Construct a uniform `UniformCartesianMesh` with `sz[d]` elements along dimension `d`.
+Construct a uniform `UniformCartesianMesh` with `sz[d]` elements along dimension
+`d`. If the kwarg `step` is passed, construct a `UniformCartesianMesh` with
+elements of approximate size `step`.
 """
 function UniformCartesianMesh(domain::HyperRectangle{N,T},sz::NTuple{N}) where {N,T}
     lc = low_corner(domain)
@@ -34,13 +37,11 @@ function UniformCartesianMesh(domain::HyperRectangle{N,T},sz::NTuple{N}) where {
     UniformCartesianMesh(grids1d)
 end
 UniformCartesianMesh(domain::HyperRectangle{N,T},sz::Int) where {N,T} = UniformCartesianMesh(domain,ntuple(i->sz,N))
-UniformCartesianMesh(;domain,sz) = UniformCartesianMesh(domain,sz)
 
 # in case you pass arguments like UniformCartesianMesh(xgrid,ygrid), convert
 # them to a Tuple
 UniformCartesianMesh(grids::Vararg{LinRange{T}}) where {T} = UniformCartesianMesh(Tuple(grids))
 
-
 function UniformCartesianMesh(domain::HyperRectangle{N};step::NTuple{N}) where {N}
     lc = low_corner(domain)
     hc = high_corner(domain)