title: Different Locale between Mac and Widows on RStudio
body: <p>what my console displays on window:</p>
  <pre><code>R version 3.6.1 (2019-07-05)
  Platform: x86_64-w64-mingw32/x64 (64-bit)
  Running under: Windows &gt;= 8 x64 (build 9200)
  
  Matrix products: default
  
  locale:
  [1] LC_COLLATE=English_Switzerland.1252  LC_CTYPE=English_Switzerland.1252   
  [3] LC_MONETARY=English_Switzerland.1252 LC_NUMERIC=C                        
  [5] LC_TIME=English_Switzerland.1252    
  
  attached base packages:
  [1] stats     graphics  grDevices utils     datasets  methods   base     
  
  loaded via a namespace (and not attached):
  [1] compiler_3.6.1 tools_3.6.1    yaml_2.2.0 
  </code></pre>
  <p>what my console displays on Mac:</p>
  <pre><code>R version 3.6.1 (2019-07-05)
  Platform: x86_64-apple-darwin13.4.0 (64-bit)
  Running under: macOS  10.16
  
  Matrix products: default
  LAPACK: /Users/lea/opt/anaconda3/envs/renv/lib/R/lib/libRblas.dylib
  
  locale:
  [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
  
  attached base packages:
  [1] stats     graphics  grDevices utils     datasets  methods   base     
  
  other attached packages:
  [1] readr_1.3.1
  
  loaded via a namespace (and not attached):
   [1] compiler_3.6.1   assertthat_0.2.1 R6_2.4.0         cli_1.1.0       
   [5] hms_0.4.2        tools_3.6.1      pillar_1.3.1     rstudioapi_0.10 
   [9] tibble_2.1.1     yaml_2.2.0       Rcpp_1.0.1       crayon_1.3.4    
  [13] utf8_1.1.4       fansi_0.4.0      pkgconfig_2.0.2  rlang_0.3.4   
  </code></pre>
  <p>if I use the same code I get a result on windows but most of the time an error on Mac, can someone please help me? should I have the same result of the console?</p>