Add `@numrule` for rules matching `[-, /, \, \\]` expressions

[Suavesito-Olimpiada]

fix #241 adding @numrule as proposed by @shashi

[codecov-io]

Codecov Report

Merging #277 (3693f16) into master (9e85a60) will decrease coverage by 0.60%. The diff coverage is 93.33%.

@@            Coverage Diff             @@
##           master     #277      +/-   ##
==========================================
- Coverage   86.10%   85.49%   -0.61%     
==========================================
  Files          11       12       +1     
  Lines        1137     1193      +56     
==========================================
+ Hits          979     1020      +41     
- Misses        158      173      +15     

Impacted Files	Coverage Δ
src/SymbolicUtils.jl	100.00% <ø> (ø)
src/rule.jl	87.85% <93.33%> (+1.61%)	:arrow_up:
src/code.jl	79.42% <0.00%> (-4.55%)	:arrow_down:
src/methods.jl	82.50% <0.00%> (-3.62%)	:arrow_down:
src/api.jl	91.42% <0.00%> (ø)
src/simplify_rules.jl	75.00% <0.00%> (ø)
src/utils.jl	60.37% <0.00%> (+0.37%)	:arrow_up:

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[shashi]

This is pretty awesome!! Thank you!

[shashi]

Can we try doing these in simplify_rules.jl?

[Suavesito-Olimpiada]

Yeah! of course, I just wanted to have some insight on the aproach and the implementation, so if it was OK then I could worked it further.

If you think this is fine, I'll get my hand into symplify_rules.jl. :smile:

[Suavesito-Olimpiada]

So I have been in finals and I hadn't have time to finish this. But once this month ends I'll be able to work in this and another issues. Just wanted to say that I haven't abandoned this PR.

[codecov-commenter]

Codecov Report

Merging #277 (546f324) into master (16066fa) will increase coverage by 0.12%. The diff coverage is 80.64%.

@@            Coverage Diff             @@
##           master     #277      +/-   ##
==========================================
+ Coverage   83.32%   83.44%   +0.12%     
==========================================
  Files          12       12              
  Lines        1319     1365      +46     
==========================================
+ Hits         1099     1139      +40     
- Misses        220      226       +6     

Impacted Files	Coverage Δ
src/SymbolicUtils.jl	100.00% <ø> (ø)
src/rule.jl	87.27% <80.64%> (-8.89%)	:arrow_down:
src/ordering.jl	88.37% <0.00%> (-1.17%)	:arrow_down:
src/adjoints.jl	100.00% <0.00%> (ø)
src/polyform.jl	93.88% <0.00%> (+0.16%)	:arrow_up:
src/types.jl	83.84% <0.00%> (+0.23%)	:arrow_up:
src/methods.jl	81.81% <0.00%> (+0.42%)	:arrow_up:
src/simplify_rules.jl	91.66% <0.00%> (+9.84%)	:arrow_up:

---

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[Suavesito-Olimpiada]

Coming back to check this. Now it seems even messier than last time, any commentaries?

[shashi]

Yeah since then Div has been introduced. It should actually help in this case. We still badly need this feature!