aboutsummaryrefslogtreecommitdiff
path: root/help/catch.md
blob: 5f1b308701bb237973a05b40ba13d47ddfdd01cc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
*View this file with results and syntax highlighting [here](https://mlochbaum.github.io/BQN/help/catch.html).*

# Circled Triangle Down (`⎊`)
    
## `𝔽⎊𝔾 𝕩`, `𝕨 𝔽⎊𝔾 𝕩`: Catch
    
Apply `𝔽` to the arguments. 
    
If an error happens when `𝔽` is applied, cancel its execution, apply `𝔾` to the arguments and return the results. 
    
Otherwise, return the results of `𝔽`.
    
           ∾⎊{"error occurred with argument: "∾•Fmt 𝕩} 1

           ∾⎊{"error occurred with argument: "∾•Fmt 𝕩} ⟨⟨1,2⟩, ⟨3,4⟩⟩