allow default values for get with fill

src/algorithm/map.rs

@@ -60,7 +60,15 @@ impl Value {
  }
  /// Get a value from a map array
  pub fn get(&self, key: &Value, env: &Uiua) -> UiuaResult<Value> {
- with_pair(self, env, |pair| pair.get(key))?.ok_or_else(|| env.error("Key not found in map"))
+ let value = with_pair(self, env, |pair| pair.get(key))?;
+ if let Some(value) = value {
+ Ok(value)
+ } else {
+ match env.box_fill() {
+ Ok(fill) => Ok(fill.0),
+ Err(e) => Err(env.error(format!("Key not found in map{e}"))),
+ }
+ }
  }
  /// Check if a map array contains a key
  pub fn has_key(&self, key: &Value, env: &Uiua) -> UiuaResult<bool> {

src/primitive/defs.rs

@@ -1880,6 +1880,11 @@ primitive!(
  /// ex: # Experimental!
  /// : map 1_2 3_4
  /// : (⋅⋅0|get) has,, 5 .
+ /// You can provide a default value with [fill].
+ /// ex: # Experimental!
+ /// : map 1_2 3_4
+ /// : ⬚0get 1 .
+ /// : ⬚0get 5 :
  (2, Get, Map, "get"),
  /// Remove the value corresponding to a key from a map array
  ///