Add reference_counting example
This commit is contained in:
Timothy Warren
parent
9b0fff8c9f
commit
f9dcd6d48d
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@ -25,6 +25,7 @@
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<cargoProject FILE="$PROJECT_DIR$/minigrep_v2/Cargo.toml" />
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<cargoProject FILE="$PROJECT_DIR$/add/Cargo.toml" />
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<cargoProject FILE="$PROJECT_DIR$/smart_pointers/Cargo.toml" />
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<cargoProject FILE="$PROJECT_DIR$/reference_counting/Cargo.toml" />
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</component>
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<component name="ComposerJsonPluginSettings">
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<unboundedVersionInspectionSettings>
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@ -102,6 +102,10 @@
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<sourceFolder url="file://$MODULE_DIR$/smart_pointers/examples" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/smart_pointers/tests" isTestSource="true" />
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<sourceFolder url="file://$MODULE_DIR$/smart_pointers/benches" isTestSource="true" />
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<sourceFolder url="file://$MODULE_DIR$/reference_counting/src" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/reference_counting/examples" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/reference_counting/tests" isTestSource="true" />
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<sourceFolder url="file://$MODULE_DIR$/reference_counting/benches" isTestSource="true" />
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<excludeFolder url="file://$MODULE_DIR$/add/add-one/target" />
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<excludeFolder url="file://$MODULE_DIR$/add/adder/target" />
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<excludeFolder url="file://$MODULE_DIR$/adder/target" />
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@ -120,6 +124,7 @@
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<excludeFolder url="file://$MODULE_DIR$/minigrep_v2/target" />
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<excludeFolder url="file://$MODULE_DIR$/modules/target" />
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<excludeFolder url="file://$MODULE_DIR$/rectangles/target" />
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<excludeFolder url="file://$MODULE_DIR$/reference_counting/target" />
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<excludeFolder url="file://$MODULE_DIR$/references/target" />
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<excludeFolder url="file://$MODULE_DIR$/scope/target" />
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<excludeFolder url="file://$MODULE_DIR$/slices/target" />
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@ -15,29 +15,14 @@
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<component name="FileEditorManager">
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<leaf>
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<file pinned="false" current-in-tab="true">
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<entry file="file://$PROJECT_DIR$/smart_pointers/src/main.rs">
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<entry file="file://$PROJECT_DIR$/reference_counting/src/main.rs">
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<provider selected="true" editor-type-id="text-editor">
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<state relative-caret-position="32">
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<element signature="e#261#262#0" expanded="true" />
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</folding>
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<state relative-caret-position="224">
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<caret line="14" column="13" selection-start-line="14" selection-start-column="13" selection-end-line="14" selection-end-column="13" />
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</state>
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</provider>
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</entry>
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</file>
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<file pinned="false" current-in-tab="false">
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<entry file="file://$PROJECT_DIR$/smart_pointers/src/lib.rs">
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<provider selected="true" editor-type-id="text-editor" />
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</entry>
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</file>
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</leaf>
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</component>
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<component name="FileTemplateManagerImpl">
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@ -107,6 +92,7 @@
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<option value="$PROJECT_DIR$/add/add-one/src/lib.rs" />
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<option value="$PROJECT_DIR$/smart_pointers/src/lib.rs" />
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<option value="$PROJECT_DIR$/smart_pointers/src/main.rs" />
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<option value="$PROJECT_DIR$/reference_counting/src/main.rs" />
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</list>
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</option>
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</component>
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@ -140,12 +126,12 @@
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<path>
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<item name="rust" type="3d21c010:ScopeViewTreeModel$ProjectNode" />
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<item name="rust" type="2674bda8:ScopeViewTreeModel$GroupNode" />
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<item name="smart_pointers" type="9f88c78c:ScopeViewTreeModel$FileNode" />
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<item name="reference_counting" type="9f88c78c:ScopeViewTreeModel$FileNode" />
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</path>
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<path>
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<item name="rust" type="3d21c010:ScopeViewTreeModel$ProjectNode" />
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<item name="rust" type="2674bda8:ScopeViewTreeModel$GroupNode" />
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<item name="smart_pointers" type="9f88c78c:ScopeViewTreeModel$FileNode" />
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<item name="reference_counting" type="9f88c78c:ScopeViewTreeModel$FileNode" />
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<item name="src" type="9f88c78c:ScopeViewTreeModel$FileNode" />
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</path>
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</expand>
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@ -179,7 +165,7 @@
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</component>
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<component name="PropertiesComponent">
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<property name="JavaScriptWeakerCompletionTypeGuess" value="true" />
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<property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1549379395077" />
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<property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1549380100372" />
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<property name="javascript.nodejs.core.library.configured.version" value="7.1.0" />
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<property name="js.eslint.eslintPackage" value="$USER_HOME$/.yarn-config/global/node_modules/.bin/eslint" />
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<property name="js.eslint.nodeInterpreter" value="project" />
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@ -207,7 +193,7 @@
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</list>
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</option>
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</component>
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<component name="RunManager" selected="Cargo Command.Run smart_pointers">
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<component name="RunManager" selected="Cargo Command.Run reference_counting">
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<configuration name="<template>" type="TestNG" default="true" selected="false">
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<option name="MAIN_CLASS_NAME" />
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<option name="VM_PARAMETERS" value="-ea" />
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@ -226,6 +212,16 @@
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<option name="Make" enabled="true" />
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</method>
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</configuration>
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<configuration name="Run reference_counting" type="CargoCommandRunConfiguration" factoryName="Cargo Command" temporary="true">
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<option name="channel" value="DEFAULT" />
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<option name="command" value="run --package reference_counting --bin reference_counting" />
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<option name="allFeatures" value="false" />
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<option name="nocapture" value="false" />
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<option name="backtrace" value="SHORT" />
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<option name="workingDirectory" value="file://$PROJECT_DIR$/reference_counting" />
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<envs />
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<method v="2" />
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</configuration>
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<configuration name="Run smart_pointers" type="CargoCommandRunConfiguration" factoryName="Cargo Command" temporary="true">
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<option name="channel" value="DEFAULT" />
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<option name="command" value="run --package smart_pointers --bin smart_pointers" />
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@ -246,16 +242,6 @@
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<envs />
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<method v="2" />
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</configuration>
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<configuration name="Test filters_by_size" type="CargoCommandRunConfiguration" factoryName="Cargo Command" temporary="true">
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<option name="channel" value="DEFAULT" />
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<option name="command" value="test --package closures --lib filters_by_size -- --exact" />
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<option name="allFeatures" value="false" />
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<option name="nocapture" value="false" />
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<option name="backtrace" value="SHORT" />
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<option name="workingDirectory" value="file://$PROJECT_DIR$/closures" />
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<envs />
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<method v="2" />
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</configuration>
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<configuration name="Test lib::tests (1)" type="CargoCommandRunConfiguration" factoryName="Cargo Command" temporary="true">
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<option name="channel" value="DEFAULT" />
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<option name="command" value="test --package minigrep_v2 --lib tests" />
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@ -285,11 +271,11 @@
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</configuration>
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<recent_temporary>
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<list>
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<item itemvalue="Cargo Command.Run reference_counting" />
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<item itemvalue="Cargo Command.Run smart_pointers" />
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<item itemvalue="Cargo Command.Test lib::tests (1)" />
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<item itemvalue="Cargo Command.Test using_other_iterator_trait_methods" />
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<item itemvalue="Cargo Command.Test calling_next_directly" />
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<item itemvalue="Cargo Command.Test filters_by_size" />
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</list>
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</recent_temporary>
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</component>
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@ -731,13 +717,12 @@
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</entry>
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<entry file="file://$PROJECT_DIR$/smart_pointers/src/main.rs">
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<provider selected="true" editor-type-id="text-editor">
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<state relative-caret-position="32">
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<caret line="2" lean-forward="true" selection-start-line="2" selection-end-line="2" />
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<state relative-caret-position="256">
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<caret line="16" column="4" selection-start-line="16" selection-start-column="4" selection-end-line="16" selection-end-column="4" />
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<folding>
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<element signature="e#68#69#0" expanded="true" />
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<element signature="e#91#92#0" expanded="true" />
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<element signature="e#200#201#0" expanded="true" />
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<element signature="e#216#217#0" expanded="true" />
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<element signature="e#351#352#0" expanded="true" />
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<element signature="e#433#434#0" expanded="true" />
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<element signature="e#244#245#0" expanded="true" />
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@ -746,5 +731,12 @@
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</state>
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</provider>
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</entry>
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<entry file="file://$PROJECT_DIR$/reference_counting/src/main.rs">
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<provider selected="true" editor-type-id="text-editor">
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<state relative-caret-position="224">
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<caret line="14" column="13" selection-start-line="14" selection-start-column="13" selection-end-line="14" selection-end-column="13" />
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</state>
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</provider>
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</entry>
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</component>
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</project>
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@ -0,0 +1,7 @@
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[package]
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name = "reference_counting"
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version = "0.1.0"
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authors = ["Timothy Warren <twarren@nabancard.com>"]
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edition = "2018"
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[dependencies]
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@ -0,0 +1,19 @@
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enum List {
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Cons(i32, Rc<List>),
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Nil,
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}
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use List::{Cons, Nil};
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use std::rc::Rc;
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fn main() {
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let a = Rc::new(Cons(5, Rc::new(Cons(10, Rc::new(Nil)))));
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println!("count after creating a = {}", Rc::strong_count(&a));
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let _b = Cons(3, Rc::clone(&a));
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println!("count after creating b = {}", Rc::strong_count(&a));
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{
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let _c = Cons(4, Rc::clone(&a));
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println!("count after creating c = {}", Rc::strong_count(&a));
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}
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println!("count after c goes out of scope = {}", Rc::strong_count(&a));
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}
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