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Add advanced_functions example

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This commit is contained in:
Timothy Warren 2019-02-11 09:34:46 -05:00
parent 9a23a0ce9b
commit 59bc706d0a
5 changed files with 105 additions and 42 deletions
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1
.idea/misc.xml
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@ -40,6 +40,7 @@
<cargoProject FILE="$PROJECT_DIR$/advanced_lifetimes/Cargo.toml" />
<cargoProject FILE="$PROJECT_DIR$/advanced_traits/Cargo.toml" />
<cargoProject FILE="$PROJECT_DIR$/advanced_types/Cargo.toml" />
<cargoProject FILE="$PROJECT_DIR$/advanced_functions/Cargo.toml" />
</component>
<component name="ComposerJsonPluginSettings">
<unboundedVersionInspectionSettings>

5
.idea/rust.iml
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@ -161,9 +161,14 @@
<sourceFolder url="file://$MODULE_DIR$/advanced_types/examples" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/advanced_types/tests" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/advanced_types/benches" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/advanced_functions/src" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/advanced_functions/examples" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/advanced_functions/tests" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/advanced_functions/benches" isTestSource="true" />
<excludeFolder url="file://$MODULE_DIR$/add/add-one/target" />
<excludeFolder url="file://$MODULE_DIR$/add/adder/target" />
<excludeFolder url="file://$MODULE_DIR$/adder/target" />
<excludeFolder url="file://$MODULE_DIR$/advanced_functions/target" />
<excludeFolder url="file://$MODULE_DIR$/advanced_lifetimes/target" />
<excludeFolder url="file://$MODULE_DIR$/advanced_traits/target" />
<excludeFolder url="file://$MODULE_DIR$/advanced_types/target" />

96
.idea/workspace.xml
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@ -15,10 +15,18 @@
<component name="FileEditorManager">
<leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
<file pinned="false" current-in-tab="true">
<entry file="file://$PROJECT_DIR$/advanced_types/src/main.rs">
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@ -52,7 +60,6 @@
<component name="IdeDocumentHistory">
<option name="CHANGED_PATHS">
<list>
<option value="$PROJECT_DIR$/guessing_game/.gitignore" />
<option value="$PROJECT_DIR$/errors/src/main.rs" />
<option value="$PROJECT_DIR$/.gitignore" />
<option value="$PROJECT_DIR$/largest_number/src/main.rs" />
@ -103,6 +110,7 @@
<option value="$PROJECT_DIR$/advanced_traits/src/lib.rs" />
<option value="$PROJECT_DIR$/advanced_traits/src/main.rs" />
<option value="$PROJECT_DIR$/advanced_types/src/main.rs" />
<option value="$PROJECT_DIR$/advanced_functions/src/main.rs" />
</list>
</option>
</component>
@ -112,7 +120,7 @@
<annotation-enable>false</annotation-enable>
<other-services-enabled>false</other-services-enabled>
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<component name="ProjectFrameBounds">
<component name="ProjectFrameBounds" extendedState="6">
<option name="x" value="1920" />
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@ -159,12 +167,12 @@
<path>
<item name="rust" type="3d21c010:ScopeViewTreeModel$ProjectNode" />
<item name="rust" type="2674bda8:ScopeViewTreeModel$GroupNode" />
<item name="advanced_types" type="9f88c78c:ScopeViewTreeModel$FileNode" />
<item name="advanced_functions" type="9f88c78c:ScopeViewTreeModel$FileNode" />
</path>
<path>
<item name="rust" type="3d21c010:ScopeViewTreeModel$ProjectNode" />
<item name="rust" type="2674bda8:ScopeViewTreeModel$GroupNode" />
<item name="advanced_types" type="9f88c78c:ScopeViewTreeModel$FileNode" />
<item name="advanced_functions" type="9f88c78c:ScopeViewTreeModel$FileNode" />
<item name="src" type="9f88c78c:ScopeViewTreeModel$FileNode" />
</path>
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@ -175,7 +183,7 @@
</component>
<component name="PropertiesComponent">
<property name="JavaScriptWeakerCompletionTypeGuess" value="true" />
<property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1549652604126" />
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<property name="js.eslint.eslintPackage" value="$USER_HOME$/.yarn-config/global/node_modules/.bin/eslint" />
<property name="js.eslint.nodeInterpreter" value="project" />
@ -203,7 +211,7 @@
</list>
</option>
</component>
<component name="RunManager" selected="Cargo Command.Run advanced_types">
<component name="RunManager" selected="Cargo Command.Run advanced_functions">
<configuration name="&lt;template&gt;" type="TestNG" default="true" selected="false">
<option name="MAIN_CLASS_NAME" />
<option name="VM_PARAMETERS" value="-ea" />
@ -222,6 +230,16 @@
<option name="Make" enabled="true" />
</method>
</configuration>
<configuration name="Run advanced_functions" type="CargoCommandRunConfiguration" factoryName="Cargo Command" temporary="true">
<option name="channel" value="DEFAULT" />
<option name="command" value="run --package advanced_functions --bin advanced_functions" />
<option name="allFeatures" value="false" />
<option name="nocapture" value="false" />
<option name="backtrace" value="SHORT" />
<option name="workingDirectory" value="file://$PROJECT_DIR$/advanced_functions" />
<envs />
<method v="2" />
</configuration>
<configuration name="Run advanced_lifetimes" type="CargoCommandRunConfiguration" factoryName="Cargo Command" temporary="true">
<option name="channel" value="DEFAULT" />
<option name="command" value="run --package advanced_lifetimes --bin advanced_lifetimes" />
@ -262,16 +280,6 @@
<envs />
<method v="2" />
</configuration>
<configuration name="Test tests::it_works" type="CargoCommandRunConfiguration" factoryName="Cargo Command" temporary="true">
<option name="channel" value="DEFAULT" />
<option name="command" value="test --package advanced_lifetimes --lib tests::it_works -- --exact" />
<option name="allFeatures" value="false" />
<option name="nocapture" value="false" />
<option name="backtrace" value="SHORT" />
<option name="workingDirectory" value="file://$PROJECT_DIR$/advanced_lifetimes" />
<envs />
<method v="2" />
</configuration>
<configuration default="true" type="JUnit" factoryName="JUnit">
<option name="TEST_OBJECT" value="class" />
<option name="WORKING_DIRECTORY" value="$MODULE_DIR$" />
@ -281,11 +289,11 @@
</configuration>
<recent_temporary>
<list>
<item itemvalue="Cargo Command.Run advanced_functions" />
<item itemvalue="Cargo Command.Run advanced_types" />
<item itemvalue="Cargo Command.Run advanced_traits" />
<item itemvalue="Cargo Command.Run advanced_lifetimes" />
<item itemvalue="Cargo Command.Test lib::tests" />
<item itemvalue="Cargo Command.Test tests::it_works" />
</list>
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@ -325,8 +333,8 @@
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<editor active="true" />
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@ -334,7 +342,7 @@
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@ -356,17 +364,6 @@
<option name="version" value="1" />
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@ -563,13 +560,6 @@
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@ -804,7 +794,29 @@
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7
advanced_functions/Cargo.toml Normal file
View File

@ -0,0 +1,7 @@
[package]
name = "advanced_functions"
version = "0.1.0"
authors = ["Timothy Warren <twarren@nabancard.com>"]
edition = "2018"
[dependencies]

38
advanced_functions/src/main.rs Normal file
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@ -0,0 +1,38 @@
fn add_one(x: i32) -> i32 {
x + 1
}
/// A function with a function pointer argument
fn do_twice(f: fn(i32) -> i32, arg: i32) -> i32 {
f(arg) + f(arg)
}
#[derive(Debug)]
enum Status {
Value(u32),
Stop,
}
fn returns_closure() -> Box<dyn Fn (i32) -> i32> {
Box::new(|x| x + 1)
}
fn main() {
let answer = do_twice(add_one, 5);
println!("The answer is: {}", answer);
// Tuple Structs set up via function pointers
let list_of_statuses: Vec<Status> =
(0u32..20)
.map(Status::Value)
.collect();
println!("List of statuses: {:?}", list_of_statuses);
let increment = returns_closure();
let x = 5;
let y = increment(x);
println!("The returned closure returns: {}", y);
}