Add Context::get_value_cow()

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "evalexpr"
-version = "7.2.0"
+version = "7.2.15"
 description = "A powerful arithmetic and boolean expression evaluator"
 keywords = ["expression", "evaluate", "evaluator", "arithmetic", "boolean"]
 categories = ["parsing", "game-engines"]
@@ -26,10 +26,34 @@ path = "src/lib.rs"
 regex = { version = "1.5.5", optional = true}
 serde = { version = "1.0.133", optional = true}
 serde_derive = { version = "1.0.133", optional = true}
+num-traits = "0.2.14"
+indexmap = "2.4.0"
+deepsize = "0.2.0"
+ndarray = "0.15"
+ndarray-linalg = { version = "0.15" }
+linregress = "0.5"
+workdays = "0.1.3"
+#csv = "1.1"
+#anyhow = "1.0.86"
+thin_trait_object = { git = "https://github.com/gbemiga-viewserver/thin_trait_object", branch = "main" }
+chrono = { version = "0.4.19", default-features = false, features = ["clock", "std"] }
+paste = "1.0.14"
+percent-encoding = "2.3.1"
+lazy_static = "1.5.0"
+
 
 [features]
 serde_support = ["serde", "serde_derive"]
+default = ["serde_support"]
 regex_support = ["regex"]
+serde_json_support = ["serde_json", "log"]
+
+[dependencies.serde_json]
+version = "*"
+optional = true
+[dependencies.log]
+version = "*"
+optional = true
 
 [dev-dependencies]
 ron = "0.7.0"

README.md

@@ -52,7 +52,7 @@ assert_eq!(eval_empty_with_context_mut("a = 5", &mut context), Ok(EMPTY_VALUE));
 assert_eq!(eval_empty_with_context_mut("a = 5.0", &mut context),
            Err(EvalexprError::expected_int(Value::from(5.0))));
 // We can check which value the context stores for a like this
-assert_eq!(context.get_value("a"), Some(&Value::from(5)));
+assert_eq!(context.get_value("a"), Some(Value::from(5)));
 // And use the value in another expression like this
 assert_eq!(eval_int_with_context_mut("a = a + 2; a", &mut context), Ok(7));
 // It is also possible to save a bit of typing by using an operator-assignment operator
@@ -223,7 +223,7 @@ assert_eq!(eval_empty_with_context_mut("a = 5", &mut context), Ok(EMPTY_VALUE));
 assert_eq!(eval_empty_with_context_mut("a = 5.0", &mut context),
            Err(EvalexprError::expected_int(5.0.into())));
 assert_eq!(eval_int_with_context("a", &context), Ok(5));
-assert_eq!(context.get_value("a"), Some(5.into()).as_ref());
+assert_eq!(context.get_value("a"), Some(5.into()));
 ```
 
 For each binary operator, there exists an equivalent operator-assignment operator.
@@ -314,8 +314,8 @@ assert_eq!(eval_int_with_context("a", &context), Ok(5));
 // We can write or overwrite variables in expressions...
 assert_eq!(eval_with_context_mut("a = 10; b = 1.0;", &mut context), Ok(().into()));
 // ...and read the value in code like this
-assert_eq!(context.get_value("a"), Some(&Value::from(10)));
-assert_eq!(context.get_value("b"), Some(&Value::from(1.0)));
+assert_eq!(context.get_value("a"), Some(Value::from(10)));
+assert_eq!(context.get_value("b"), Some(Value::from(1.0)));
 ```
 
 Contexts are also required for user-defined functions.